Stainless Steel Threaded Rods
Stainless steel threaded rods are highly versatile fasteners designed to deliver superior strength, corrosion resistance, and long-lasting durability across a wide range of applications. At Stanley Alloys, we manufacture and export top-quality threaded rods, including ASTM A193 Grade B8 fully threaded rods and 304 stainless steel partially threaded bars, crafted to meet the highest industrial standards.
Material & Alloy Benefits
Our rods are made from austenitic stainless steel grades 304 and 316, with optional variants like 321 and duplex 2205. Each material offers unique advantages:
- Chromium enhances hardness, tensile strength, and durability.
- Nickel improves corrosion resistance, ideal for marine and saline environments.
- Molybdenum ensures toughness at high temperatures and reduces brittleness.
Compared to standard 304 stainless steel, our 316 stainless steel rods provide superior resistance to harsh chemicals, brine, and seawater. A4 stainless steel rods are recognized as marine-grade for their excellent corrosion resistance and weldability. Common sizes like M10 and M12 are widely used in industrial assemblies and structural support systems.
Key Applications
Stainless steel threaded rods from Stanley Alloys are widely used in:
- Structural supports, bracing, and anchor bolts in construction
- Industrial machinery, pumps, motors, and alternators
- Electrical enclosures and control panels
- Automotive components, exhaust manifolds, and trims
- Food processing and kitchen equipment
- Pressure vessels, piping, and storage tanks
- Marine, chemical, and corrosive environments
Stainless Steel Threaded Rods – Materials & Grades
Stainless steel threaded rods are engineered for strength, corrosion resistance, and high-performance applications. They are widely used in chemical, petrochemical, marine, aerospace, food processing, and construction industries. Selecting the right grade ensures durability under specific environmental and mechanical conditions.
Common Stainless Steel Rod Grades
| Material / Grade | Features & Applications |
|---|---|
| 304 Stainless Steel | Standard corrosion resistance; general-purpose applications |
| 304L Stainless Steel | Low carbon version for welding without carbide precipitation |
| 304H Stainless Steel | High carbon for elevated temperature strength |
| 316 Stainless Steel | Excellent corrosion resistance, especially against chlorides |
| 316L Stainless Steel | Low carbon variant for welding; resists intergranular corrosion |
| 317L Stainless Steel | Superior corrosion resistance in acidic environments |
| 321 Stainless Steel | Titanium-stabilized; resists intergranular corrosion at high temperatures |
| 347 Stainless Steel | Niobium-stabilized; excellent high-temperature resistance |
| Duplex 2205 Stainless Steel | High strength with superior corrosion resistance; ideal for chemical and marine use |
| 904L Stainless Steel | Highly alloyed; exceptional resistance to strong acids |
| 410 Stainless Steel | Martensitic; good strength and moderate corrosion resistance |
| 17-4 PH Stainless Steel | Precipitation hardened; high strength and moderate corrosion resistance |
| 18-8 Stainless Steel | Common general-purpose stainless steel, moderate corrosion resistance |
| A2 Stainless Steel (A2-70) | Austenitic; good general corrosion resistance, suitable for indoor/outdoor use |
| A4 Stainless Steel (A4-70 / A4-80) | Marine-grade austenitic; superior corrosion resistance in aggressive environments |
ASTM / Standardized Threaded Rod Grades
| ASTM / Specification | Applications & Notes |
|---|---|
| ASTM A193 B6 / B7m | Alloy steel rods for high-temperature and high-pressure bolting |
| ASTM A193 B8 / B8M / B8C (321 / 347) | Stainless steel bolts and rods for high-temperature and chemical applications |
| ASTM A193 B8T | 310 stainless steel; high-temperature resistant |
| 8.8 Threaded Rod | Medium carbon steel, high tensile strength |
| 4.8 Threaded Rod | Low carbon steel, general applications |
Key Highlights
- High Corrosion Resistance: Stainless steel grades like A4, 316, 317L, and Duplex 2205 are ideal for marine, chemical, and harsh outdoor conditions.
- Temperature Performance: Grades like 310, 321, and 347 withstand elevated temperatures without losing mechanical integrity.
- High-Strength Applications: Precipitation-hardened grades (17-4 PH) and alloy steels are used in high-torque, high-stress environments.
- Customization: Available in full-length rods, cut-to-size lengths, single-ended or double-ended threading, and multiple thread standards (UNC, UNF, Metric).
Stanley Alloys – Premium Stainless Steel Threaded Rods
At Stanley Alloys, we design and export high-performance stainless steel threaded rods that are built to withstand tough industrial, marine, and structural applications. Our range includes fully threaded ASTM A193 B8M rods and partially threaded 304 stainless steel bars, made from 304 and 316 austenitic stainless steel alloys.
316 Stainless Steel
Outperforms standard 304 rods in corrosion resistance, considered marine-grade, with excellent weldability and long-term durability.
Common Sizes
- M10, M12 – Widely used for industrial assemblies and structural supports
- Custom sizes available for special machinery and structural projects
- Fully threaded or partially threaded rods with precise tolerances
Rod Design & Functionality
- Cylindrical rods with helical threads convert rotational motion into linear tension.
- Available in right-hand, left-hand, or both threads, including Acme threads with a 29° angle for heavy torque and power transmission.
- Partially threaded rods feature a “grip length,” an unthreaded section providing additional mechanical strength.
Metric Rods
M2 – M160, length 12 – 1200 mm (custom up to 3000 mm)
Imperial Rods
1/2" – 4" diameter, length 1/2" – 52"
Key Features
High tensile strength, corrosion-resistant, marine-grade, precise threads, durable under high pressure
Processes
- Wire drawing, cold heading, CNC machining, heat treatment, tapping, plating, polishing, passivation.
- Tolerance: ±0.01 mm to ±0.05 mm for high-precision applications.
- Cold forming (M2–M24), hot forging (M24–M100), CNC machining (M100/4" Dia).
Testing & Certification
- Tensile testing (ISO 898-1)
- Hardness testing (ISO 6508-1)
- Charpy impact tests (ISO 148-1)
- Preload suitability (EN 14399-2 / EN 14399-10)
- Nut proof load tests (ISO 898-2)
- Tri-roll thread comparators and calibrated gauges
- NACE MR0175 / MR0103, ISO 15156 compliance
- Certificates Provided: Manufacturer Test Certificate (MTC) EN 10204 / 3.1
Applications Across Industries
- Industrial machinery, pumps, motors, alternators
- Construction, bridges, wind towers, structural supports
- Automotive components, exhaust manifolds, trims
- Food processing equipment, commercial kitchens
- Pressure vessels, piping, and storage tanks
Packaging
- Standard wooden pallets, cartons, Euro pallets; customizable as per order.
- Delivery ports: Mumbai and Kalamboli, India
- MOQ: 5 pieces, with pre-production samples available
Delivery
- 7–15 days for standard rods, custom orders per specification
Standards & Threads
- DIN 975/976, ASTM, ISO, IS, BS, JIS, GB, ASME, UNI, CSN, EU, IFI, PN
- Threads: Fully threaded, partially threaded, Acme, trapezoidal, UNC/UNF/UNEF/UNJC/UNJF/UNK/UNR, constant pitch.
- Surface finishes: Passivated, zinc (yellow, blue, black), black oxide, DACROMET, Sherardized, PTFE, Teflon, Xylon, hot dip galvanized, bright zinc plated, and others.
Stanley Alloys – ACME & Trapezoidal Stainless Steel Threaded Rods
Stanley Alloys ACME and Trapezoidal threaded rods are precision-engineered stainless steel fasteners designed for heavy-duty applications across industrial, marine, and structural environments. Their high-strength design ensures maximum load capacity, reliable linear motion, and corrosion resistance.
Thread Type & Mechanical Advantages
| Thread Type | Thread Angle | Thread Features | Mechanical Advantages | Considerations / Notes | Applications |
|---|---|---|---|---|---|
| ACME Threaded Rod | 29° | Crest & root flat; thread height = 0.5 pitch | Easier machining, long tool life, wide thread base, compensates for nut wear | Lower efficiency than square threads due to friction | Precision machinery, lead screws, jacks, linear motion assemblies, industrial presses |
| Metric ACME Rod | 29° | Helical threads with flat apex and root; strong tooth base | High tensile strength, precise load handling | Higher friction than square threads; slight radial forces on nut | Lathes, milling machines, heavy-duty automation, industrial fasteners |
| Trapezoidal Threaded Rod (DIN 103) | 30° | Trapezoidal profile, self-locking | Supports high axial loads, excellent wear resistance | Lower mechanical efficiency; requires accurate alignment | Power screws, lead screws, vices, machine tools, linear actuators |
| Acme vs Trapezoidal | 29° (ACME), 30° (Metric Trapezoidal) | Interchangeable if TPI matches | Superior load-bearing capacity, precise motion control | ACME easier to machine; Metric Trapezoidal ideal for EU standard applications | Industrial presses, precision machinery, heavy-duty linear motion systems |
Key Advantages
- Premium stainless steel (304, 316, 321, Duplex 2205)
- High tensile strength & durability
- Wide thread base for better load distribution
- Self-locking trapezoidal threads prevent back-driving
- Custom sizes & lengths available
- Precision threading for smooth linear motion
Applications Across Industries
- Industrial machinery – Lathes, milling machines, presses
- Automation & robotics – Linear actuators, precision jigs
- Marine & chemical environments – Corrosion-resistant ACME rods
- Construction & structural assemblies – Heavy-duty support systems
Stanley Alloys – ACME Threaded Rods External Thread Specifications
Stainless steel ACME threaded rods from Stanley Alloys are precision-engineered to provide high strength, durability, and smooth linear motion for industrial, marine, and structural applications. Below is a detailed chart covering thread size, pitch, tolerance class, and major, pitch, and minor diameters for common ACME threads.
| Designation | Decimal Dia (in) | Threads Per Inch (TPI) | Tolerance Class | Major Dia. (Max / Min) | Pitch Dia. (Max / Min) | Minor Dia. (Max / Min) |
|---|---|---|---|---|---|---|
| 1/4-16 | 0.25 | 16 | 2G | 0.2500 / 0.2450 | 0.2148 / 0.2043 | 0.1775 / 0.1618 |
| 1/4-16 | 0.25 | 16 | 3G | 0.2500 / 0.2450 | 0.2158 / 0.2109 | 0.1775 / 0.1702 |
| 5/16-14 | 0.3125 | 14 | 2G | 0.3125 / 0.3075 | 0.2728 / 0.2614 | 0.2311 / 0.2140 |
| 5/16-14 | 0.3125 | 14 | 4G | 0.3125 / 0.3075 | 0.2748 / 0.2710 | 0.2311 / 0.2254 |
| 3/8-12 | 0.375 | 12 | 2G | 0.3750 / 0.3700 | 0.3284 / 0.3161 | 0.2817 / 0.2632 |
| 7/16-12 | 0.4375 | 12 | 3G | 0.4375 / 0.4325 | 0.3921 / 0.3862 | 0.3442 / 0.3354 |
| 1/2-10 | 0.5 | 10 | 2G | 0.5000 / 0.4950 | 0.4443 / 0.4306 | 0.3800 / 0.3594 |
| 5/8-8 | 0.625 | 8 | 5G | 0.6250 / 0.6188 | 0.5625 / 0.5584 | 0.4800 / 0.4738 |
| 3/4-6 | 0.75 | 6 | 3G | 0.7500 / 0.7417 | 0.6615 / 0.6534 | 0.5633 / 0.5511 |
| 1-5 | 1 | 5 | 4G | 1.0000 / 0.9900 | 0.8960 / 0.8895 | 0.7800 / 0.7703 |
| 1 1/4-5 | 1.25 | 5 | 3G | 1.2500 / 1.2400 | 1.1433 / 1.1339 | 1.0300 / 1.0159 |
| 1 1/2-4 | 1.5 | 4 | 4G | 1.5000 / 1.4875 | 1.3701 / 1.3627 | 1.2300 / 1.2189 |
| 2-4 | 2 | 4 | 5G | 2.0000 / 1.9875 | 1.8750 / 1.8687 | 1.7300 / 1.7206 |
| 2 1/2-3 | 2.5 | 3 | 3G | 2.5000 / 2.4833 | 2.3238 / 2.3113 | 2.1467 / 2.1279 |
| 3-2 | 3 | 2 | 2G | 3.0000 / 2.9750 | 2.7360 / 2.7044 | 2.4800 / 2.4326 |
| 4-2 | 4 | 2 | 5G | 4.0000 / 3.9750 | 3.7500 / 3.7411 | 3.4800 / 3.4666 |
| 5-2 | 5 | 2 | 5G | 5.0000 / 4.9750 | 4.7500 / 4.7408 | 4.4800 / 4.4400 |
Stanley Alloys – Stainless Steel Threaded Rod Strength Specifications
At Stanley Alloys, our stainless steel threaded rods are engineered for maximum strength, durability, and reliability, making them ideal for industrial, marine, and structural applications. Each rod grade is designed to deliver exceptional tensile and yield performance, with precise elongation characteristics to ensure safety and long-term performance.
Material Strength Specifications
| Material / Class | Minimum Ultimate Tensile Strength (N/mm²) | Minimum Yield Strength (N/mm²) | Elongation at Failure | Remarks / Application Focus |
|---|---|---|---|---|
| A2 Stainless Steel – Class 50 | 500 | 210 | 0.6D | Suitable for light structural applications, standard industrial assemblies, and indoor usage where moderate corrosion resistance is required. |
| A2 Stainless Steel – Class 70 | 700 | 450 | 0.4D | Ideal for medium-duty mechanical assemblies, support systems, and equipment exposed to moderate stress. |
| A2 Stainless Steel – Class 80 | 800 | 600 | 0.3D | High-strength applications including machinery, structural supports, and areas requiring high load-bearing capacity. |
| A4 Stainless Steel – Class 70 (Marine Grade) | 700 | 450 | 0.4D | Corrosion-resistant rods for marine, saline, and chemical environments; ideal for pumps, valves, and outdoor equipment. |
| A4 Stainless Steel – Class 80 (High Strength Marine) | 800 | 600 | 0.3D | Heavy-duty industrial and marine applications; excellent resistance to brine, seawater, and aggressive chemical exposure. |
| Custom Alloy SS Rods | 500 – 1000+ | 210 – 800 | 0.3D – 0.6D | Available on request for high-performance applications, including chemical plants, wind towers, and specialized machinery. |
Precision Threading
Manufactured with exact threading for maximum load distribution and secure fit.
Marine Grade Options
A4 stainless steel ensures superior corrosion resistance in harsh chemical and marine environments.
High Tensile Strength
Suitable for pressure vessels, heavy machinery, and industrial supports requiring maximum durability.
Thread Options
- Full or partial threads
- Acme or trapezoidal forms
- Custom thread lengths on request
Customization
- Custom rod lengths for special machinery
- Special alloys for chemical plants, wind towers, and high-performance applications
- Certified testing and MTC documentation for every batch
Conclusion
Whether it’s A2 for general industrial use or A4 for marine and chemical applications, Stanley Alloys stainless steel threaded rods combine strength, durability, and corrosion resistance, providing a reliable solution for every fastening and structural need.
Stanley Alloys – Full-Length Threaded Rod Standard Dimensions
Stanley Alloys manufactures precision stainless steel full-threaded rods in a wide range of diameters and lengths, suitable for industrial, construction, automotive, and heavy machinery applications. These rods are designed for high tensile strength, corrosion resistance, and reliable assembly performance.
| Rod Length (mm) | 1/2" | 5/8" | 3/4" | 7/8" | 1" | 1 1/8" | 1 1/4" | 1 3/8" | 1 1/2" | 1 5/8" | 1 3/4" | 1 7/8" | 2" |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 50 | 0.044 | 0.069 | 0.100 | 0.136 | 0.178 | 0.225 | 0.296 | 0.356 | 0.422 | 0.493 | 0.570 | 0.681 | 0.771 |
| 60 | 0.053 | 0.083 | 0.120 | 0.163 | 0.213 | 0.270 | 0.355 | 0.428 | 0.506 | 0.592 | 0.684 | 0.817 | 0.925 |
| 70 | 0.062 | 0.097 | 0.140 | 0.190 | 0.249 | 0.315 | 0.415 | 0.499 | 0.591 | 0.690 | 0.798 | 0.953 | 1.079 |
| 80 | 0.071 | 0.111 | 0.160 | 0.218 | 0.284 | 0.360 | 0.474 | 0.570 | 0.675 | 0.789 | 0.912 | 1.089 | 1.233 |
| 100 | 0.089 | 0.139 | 0.200 | 0.272 | 0.355 | 0.449 | 0.592 | 0.713 | 0.844 | 0.986 | 1.140 | 1.362 | 1.541 |
| 120 | 0.107 | 0.166 | 0.240 | 0.326 | 0.426 | 0.539 | 0.711 | 0.855 | 1.013 | 1.184 | 1.388 | 1.634 | 1.850 |
| 150 | 0.133 | 0.208 | 0.300 | 0.408 | 0.533 | 0.674 | 0.889 | 1.069 | 1.266 | 1.480 | 1.710 | 2.043 | 2.312 |
| 180 | 0.160 | 0.250 | 0.360 | 0.489 | 0.639 | 0.809 | 1.066 | 1.283 | 1.519 | 1.776 | 2.052 | 2.451 | 2.774 |
| 200 | 0.178 | 0.277 | 0.399 | 0.544 | 0.710 | 0.899 | 1.185 | 1.425 | 1.688 | 1.973 | 2.280 | 2.724 | 3.083 |
| 250 | 0.222 | 0.347 | 0.499 | 0.680 | 0.888 | 1.124 | 1.481 | 1.782 | 2.110 | 2.466 | 2.850 | 3.405 | 3.853 |
| 300 | 0.266 | 0.416 | 0.599 | 0.816 | 1.065 | 1.348 | 1.777 | 2.138 | 2.532 | 2.959 | 3.420 | 4.086 | 4.624 |
Key Features for Clients
- Available in standard lengths from 50 mm up to 300 mm, with custom sizes on request.
- Diameter options from 1/2" to 2" to fit a wide range of industrial fasteners.
- Precision thread manufacturing ensures accurate assembly and load-bearing capacity.
- Material Options: 304, 316, 316L, 2205 Stainless Steel, Carbon Steel, Alloy Steel, Titanium, and Brass.
- Surface Finishes: Self-Colored, Passivated, Zinc-Plated, Dacromet, Hot-Dip Galvanized, PTFE coated, Black Oxide, and Nickel-Plated.
- Ideal Applications: Heavy machinery, construction, wind towers, automotive, railway, and nuclear power installations.
- High-Strength Performance: Optimized for tensile strength, elongation, and durability under industrial loads.
Stainless Steel Double-Ended Threaded Rods – Standard Sizes
Double-ended threaded rods, also called stud bolts, are precision fasteners with threads on both ends and no head. They are widely used in flange connections, machinery assembly, structural applications, and repair work where nuts are applied on either side for secure clamping.
Popular Sizes of Stainless Steel Double-Ended Threaded Rods
| Thread Size & Pitch | Overall Length |
|---|---|
| 1/4"-20 | 1" |
| 5/16"-18 | 1" |
| 5/16"-18 | 1-1/4" |
| 3/8"-16 | 3/4" |
| 3/8"-16 | 1" |
| 3/8"-16 | 1-1/4" |
| 3/8"-16 | 1-1/2" |
| 3/8"-16 | 2" |
| 3/8"-16 | 2-1/2" |
| 3/8"-16 | 3" |
| 1/2"-13 | 1-1/2" |
| 1/2"-13 | 1-1/4" |
| 1/2"-13 | 2" |
| 1/2"-13 | 2-1/2" |
| 1/2"-13 | 3" |
| 5/8"-11 | 2-1/2" |
| 5/8"-11 | 3" |
| 5/8"-11 | 4" |
| 3/4"-10 | 2-1/2" |
| 3/4"-10 | 3" |
Features & Applications
- Thread on Both Ends: Enables assembly using nuts on either side for strong clamping.
- Materials: Typically available in 304/316 stainless steel for high corrosion resistance.
- Usage Areas: Industrial machinery, flanged piping connections, structural frameworks, and maintenance operations.
- Custom Lengths: Can be cut-to-size according to project requirements.
- Thread Standards: Conforms to UNC/UNF specifications for global compatibility.
Double-Ended Threaded Rods – Metric Sizes & Standard Weights
Double-ended threaded rods, or stud bolts, are versatile fastening elements used in construction, mechanical engineering, piping systems, and heavy industrial assemblies. They feature threads on both ends for securing components with nuts from either side.
Standard Metric Sizes & Thread Designation
| Thread Diameter (d) | Thread Pitch | Notes / Optional Sizes |
|---|---|---|
| M4 | – | – |
| M5 | – | – |
| M6 | – | – |
| M7 | – | Optional |
| M8 | 1.0–1.25 | – |
| M10 | 1.25–1.5 | – |
| M12 | 1.25–1.5 | – |
| M14 | 1.5–2.0 | Optional |
| M16 | 1.5–2.0 | – |
| M18 | 1.5–2.5 | Optional |
| M20 | 1.5 | – |
| M22 | 1.5 | – |
| M24 | 2.0 | – |
| M27 | 2.0 | Optional |
| M30 | 2.0 | – |
| M33 | 2.0 | Optional |
| M36 | 3.0 | Optional |
| M39 | 3.0 | – |
| M42 | 3.0 | – |
| M45 | 3.0 | – |
| M48 | 3.0 | – |
| M52 | 3.0 | Optional |
Dimensional Specifications
| Diameter (d) | b1 (mm) | b2 (l <125 mm) | b2 (125<l<200 mm) | b2 (l >200 mm) | x1 (mm) | x2 (mm) |
|---|---|---|---|---|---|---|
| M4 | 5 | 14 | 20 | – | 1.75 | 0.9 |
| M5 | 6.5 | 16 | 22 | – | 2 | 1 |
| M6 | 7.5 | 18 | 24 | – | 2.5 | 1.25 |
| M7 | 9 | 20 | 26 | – | 2.5 | 1.25 |
| M8 | 10 | 22 | 28 | – | 3.2 | 1.6 |
| M10 | 12 | 26 | 32 | 45 | 3.8 | 1.9 |
| M12 | 15 | 30 | 36 | 49 | 4.3 | 2.2 |
| M14 | 18 | 34 | 40 | 53 | 5 | 2.5 |
| M16 | 20 | 38 | 44 | 57 | 5 | 2.5 |
| M18 | 22 | 42 | 48 | 61 | 6.3 | 3.2 |
| M20 | 25 | 46 | 52 | 65 | 6.3 | 3.2 |
| M22 | 28 | 50 | 56 | 69 | 6.3 | 3.2 |
| M24 | 30 | 54 | 60 | 73 | 7.5 | 3.8 |
Weight Reference (kg per 1000 units)
| Length (mm) | M20 | M22 | M24 | M27 | M30 | M33 | M36 | M39 | M42 |
|---|---|---|---|---|---|---|---|---|---|
| 20 | 2.03 | – | – | – | – | – | – | – | – |
| 25 | 2.52 | 4.11 | 5.85 | – | – | – | – | – | – |
| 30 | 3.02 | 4.88 | 6.96 | 10.1 | 13.1 | – | – | – | – |
| 40 | 4.01 | 6.42 | 9.18 | 13.1 | 17 | 27.2 | 41 | – | – |
| 50 | – | 7.96 | 11.4 | 16.1 | 21 | 33.3 | 49 | 70 | 94.9 |
| 100 | – | – | 64.2 | 94.3 | 130 | 174 | 220 | 279 | 346 |
Key Features & Applications
- Precision Threading: Both ends threaded for use with nuts on either side.
- Material Strength: Typically steel with high tensile strength; stainless steel variants available for corrosion resistance.
- Usage: Ideal for flanges, structural assembly, machinery, heavy equipment, and repair operations.
- Custom Lengths: Rods can be supplied cut-to-size for specific project requirements.
- Compliance: Conforms to DIN/ISO standards for international compatibility.
Left-Hand Threaded Rods – Metric Dimensions (DIN 976-1 Standard)
Left-hand threaded rods, also called reverse-thread rods, are manufactured to tighten in the opposite direction compared to standard right-hand threads. They are widely used in rotating machinery, automotive systems, heavy equipment, and safety-critical assemblies where vibration or torque could loosen conventional threads.
Standard Metric Sizes – Left-Hand Threaded Rods
| Nominal Diameter (d) | Pitch (mm) | Standard Length (mm) |
|---|---|---|
| M3 | 0.50 | 1000 |
| M4 | 0.70 | 1000 |
| M5 | 0.80 | 1000 |
| M6 | 1.00 | 1000 |
| M7 | 1.00 | 1000 |
| M8 | 1.25 | 1000 |
| M10 | 1.50 | 1000 |
| M12 | 1.75 | 1000 |
| M14 | 2.00 | 1000 |
| M16 | 2.00 | 1000 |
| M18 | 2.50 | 1000 |
| M20 | 2.50 | 1000 |
| M22 | 2.50 | 1000 |
| M24 | 3.00 | 1000 |
Technical Insights & Applications
- Thread Direction: Tightens counter-clockwise, opposite to standard rods.
- Standard Compliance: Fully compliant with DIN 976-1 for global interchangeability.
- Length Availability: Standard length is 1000 mm; custom sizes available.
- Materials: Carbon steel, stainless steel (A2, A4), alloy steel with protective coatings (zinc, galvanizing, black oxide).
Common Use Cases
- Securing components subject to rotational forces.
- Safety locking in vibration-prone assemblies.
- Specialized machinery requiring reverse threading.
Stainless Steel Threaded Rods – Weight & Packing Reference
Stainless steel threaded rods are widely used in construction, marine, petrochemical, and heavy engineering applications due to their high tensile strength, durability, and corrosion resistance. Knowing the weight per 100 pieces and the packing configuration (pieces per tube) is important for procurement, logistics, and on-site handling.
Standard Dimensions & Packing Details
| Thread Size (Inch) | Weight per 100 Pieces (kg) | Pieces per Tube |
|---|---|---|
| 1/4-20 | 12.3 | 50 |
| 5/16-18 | 20.1 | 35 |
| 3/8-16 | 29.6 | 25 |
| 7/16-14 | 40.6 | 17 |
| 1/2-13 | 53.9 | 12 |
| 9/16-12 | 67.6 | 10 |
| 5/8-11 | 85.2 | 8 |
| 3/4-10 | 124.9 | 5 |
| 7/8-9 | 172.4 | 4 |
| 1-8 | 225.6 | 2 |
| 1 1/8-7 | 284.2 | 1 |
| 1 1/8-8 | 290.9 | 1 |
| 1 1/4-7 | 357.6 | 1 |
| 1 1/4-8 | 365.8 | 1 |
| 1 1/2-6 | 517.8 | 1 |
| 1 1/2-8 | 539.7 | 1 |
| 1 3/4-5 | 703.0 | 1 |
| 2"-4 1/2" | 922.0 | 1 |
Key Highlights
- Weight Variation: Approximate weights, may vary slightly based on stainless steel grade (304, 316, 316L, duplex, etc.).
- Packing Convenience: Smaller sizes (¼″ to ½″) are packed in multiple rods per tube for easier handling; larger diameters shipped individually.
- Durability Advantage: Ideal for marine and chemical industries due to superior corrosion resistance.
- Thread Standards: Manufactured in UNC/UNF threads per ASTM, DIN, or ISO equivalents for global compatibility.
- Length Options: Standard lengths of 1m, 2m, and 3m; custom cut lengths available upon request.
Stanley Alloys – Testing Tools & Equipment
Accurate measurement and quality verification are critical for ensuring the performance and reliability of stainless steel threaded rods. Various precision instruments and inspection tools are used to check dimensions, thread quality, surface finish, and overall compliance with standards.
Common Testing Tools & Equipment
| Tool / Equipment | Purpose & Application |
|---|---|
| Micrometer | Measures rod diameter and external dimensions with high precision (up to 0.001 mm). |
| Smooth Plug Gauge | Verifies internal thread sizes and ensures correct tolerances for threaded holes. |
| Thread Gauge | Checks thread pitch, angle, and profile for accuracy against specified standards (UNC, UNF, Metric). |
| Coordinate Measuring Machine (CMM) | Provides high-precision 3D measurement of rod geometry, thread length, and critical dimensions. |
| Roughness Tester | Evaluates surface finish and smoothness to ensure proper threading and coating quality. |
| Image Measuring Instrument | Optical or digital inspection of thread profiles, pitches, and minor defects. |
| Calipers (Routine Inspection) | Quick verification of diameter, length, and depth; ensures routine compliance during production. |
Key Highlights
- Quality Assurance: These tools help ensure threaded rods meet ASTM, DIN, ISO, and other international standards.
- Thread Accuracy: Fine-pitch threads require careful inspection using thread gauges, plug gauges, and optical instruments.
- Surface Integrity: Roughness testers and image measuring devices confirm smooth threading for proper nut engagement and corrosion protection.
- Versatility: Instruments like CMMs allow automated inspection of large batches with high precision and repeatability.
Comprehensive Threaded Rod Size & Weight Reference
Threaded rods, also known as full-threaded studs, are essential fastening components widely used in construction, heavy machinery, structural applications, and industrial installations. Their strength, reliability, and ease of use make them a standard choice for engineers and fabricators.
Metric Threaded Rod Dimensions – Standard Weights
| Metric Size | Approx. Weight (kg/m) | Equivalent UNC Size | Weight (kg/m) |
|---|---|---|---|
| M2 | 0.0187 | – | – |
| M2.5 | 0.0300 | – | – |
| M3 | 0.0440 | – | – |
| M3.5 | 0.0600 | – | – |
| M4 | 0.0780 | – | – |
| M5 | 0.1240 | – | – |
| M6 | 0.1770 | ¼″ | 0.194 |
| M8 | 0.3190 | 5/16″ | 0.323 |
| M10 | 0.5000 | 3/8″ | 0.469 |
| M12 | 0.7250 | ½″ | 0.896 |
| M14 | 0.9700 | 9/16″ | 1.096 |
| M16 | 1.3300 | 5/8″ | 1.342 |
| M18 | 1.6500 | – | – |
| M20 | 2.0800 | ¾″ | 2.021 |
| M22 | 2.5400 | 7/8″ | 2.756 |
| M24 | 3.0000 | 1″ | 3.638 |
| M27 | 3.8500 | 1 1/8″ | 4.545 |
| M30 | 4.7500 | 1 ¼″ | 5.718 |
| M33 | 5.9000 | 1 3/8″ | 6.842 |
| M36 | 6.9000 | 1 ½″ | 8.281 |
| M39 | 8.2000 | 1 5/8″ | 9.726 |
| M42 | 9.4000 | 1 ¾″ | 11.231 |
| M45 | 11.0000 | 1 7/8″ | 13.038 |
| M48 | 12.4000 | 2″ | 14.741 |
Key Notes for Engineers & Buyers
- Weight Tolerance: The given weights are approximate and can vary depending on material grade (carbon steel, stainless steel, alloy steel, etc.).
- Conversion Ease: Metric and UNC (inch) sizes are listed side-by-side for quick reference when switching between standards.
- Applications: Commonly used in construction frameworks, equipment assemblies, pipeline flanges, and anchoring systems.
- Cut-to-Length: Available in 1m, 2m, and 3m lengths; custom cutting on request.
- Strength Classes: Grades include 4.8, 8.8, 10.9, and stainless steel A2-70 / A4-80.
Frequently Asked Questions (FAQs)
Stainless steel threaded rods are versatile fasteners used in construction, machinery, automotive, marine, and industrial applications. They provide high tensile strength and corrosion resistance for secure assembly of components.
Common grades include 304, 316, 316L, 321, 317L, 2205 Duplex, and specialty alloys. Each grade is selected based on corrosion resistance, strength, and environmental conditions.
Full-threaded rods have threads along the entire length, allowing adjustable fastening. Partially threaded rods have a smooth shank at one end, providing additional shear strength for specific applications.
Choose the diameter based on load requirements and the type of nut or fixture being used. Length depends on the installation depth and material thickness. Standard sizes are available, and custom lengths can be manufactured.
Yes, especially grades like 316 and 2205 Duplex, which offer excellent corrosion resistance against moisture, saltwater, and harsh environments.
Standard finishes include self-colored, passivated, zinc-plated, hot-dip galvanized, black oxide, PTFE coated, and nickel-plated, providing additional corrosion protection and aesthetic appeal.
Standard lengths range from 1 ft to 12 ft (300 mm to 3600 mm). Custom rods can be manufactured up to 50 ft in full thread, single end, or double end configurations.
They are inspected using micrometers, calipers, thread gauges, plug gauges, coordinate measuring machines (CMM), roughness testers, and image measuring instruments to ensure compliance with ASTM, DIN, ISO, and other standards.
Yes, left-hand threaded rods are manufactured according to DIN 976-1 and other standards, allowing applications that require counter-clockwise tightening or specific mechanical configurations.
They are widely used in construction, wind towers, automotive, railway, oil & gas, nuclear power plants, marine installations, and heavy machinery where strength, corrosion resistance, and reliable fastening are critical.