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Stainless Steel Hex Bolts

Stainless Steel Hex Bolts

Stainless Steel Hex Bolts

Introduction

Stainless Steel Hex Bolts are among the most reliable and versatile fasteners used across industries worldwide. Designed with a six-sided head that allows easy tightening and maximum torque transfer, these bolts provide secure, long-lasting connections in everything from heavy construction projects to precision engineering applications. Manufactured from high-quality stainless steel grades such as A2 (304), A4 (316), Duplex, and Super Duplex, they deliver excellent corrosion resistance, superior strength, and durability even in the harshest environments—whether exposed to saltwater, chemicals, extreme weather, or high pressure. Their strength ranges from standard A2-70 for general use to high-performance A4-80 and Duplex grades for marine, oil & gas, and offshore applications. Available in a wide range of sizes (M2–M100, 1/8”–4”), lengths, and thread types (coarse, fine, UNC, UNF), stainless steel hex bolts are produced according to global standards like ISO 4014, ISO 4017, DIN 931, DIN 933, ASTM A193, and IS 1364. They are widely used in construction, automotive, aerospace, marine, renewable energy, chemical plants, and food processing industries. With their clean polished finish, resistance to rust, and long service life, stainless steel hex bolts not only ensure structural safety and reliability but also provide a professional, high-quality appearance where visible fasteners are required. Whether you are building a bridge, installing machinery, fabricating equipment, or assembling offshore platforms, stainless steel hex bolts remain the preferred fastening solution for strength, durability, and performance you can trust.

Classification of Hex Bolts

  • By Thread Type: Coarse Thread (UNC / ISO Metric Coarse): Stronger thread engagement. Less prone to galling. Easier to assemble/disassemble. Fine Thread (UNF / ISO Metric Fine): Greater tensile strength. Better for vibration resistance. Used in aerospace, automotive.
  • By Shank: Partially Threaded (DIN 931 / ISO 4014): Better shear strength. Fully Threaded (DIN 933 / ISO 4017): More grip, adjustable fastening.
  • By Head Design: Standard Hex Head, Heavy Hex Head (thicker head for structural loads), Flange Hex Bolt (built-in washer).
  • By Performance: General-purpose bolts (A2-50, A2-70), High-tensile bolts (A4-80, A4-100), Structural bolts (heavy hex, high torque).

Stainless Steel Grades & Metallurgy

  • Austenitic Stainless Steel: A2 (304): General-purpose, corrosion resistant. A4 (316): Higher corrosion resistance, molybdenum added. A5 (904L): Superior resistance to acids, chemical processing.
  • Ferritic Stainless Steel: 430, 446: Moderate corrosion resistance, lower cost, used in light-duty applications.
  • Martensitic Stainless Steel: 410, 420: High strength & hardness, moderate corrosion resistance. Used in turbines, pumps, mechanical engineering.
  • Duplex & Super Duplex: Duplex 2205, Super Duplex 2507: Double structure (austenitic + ferritic). Twice the strength of standard austenitic.

International Standards & Equivalents

Standard Description Equivalent Codes
ISO 4014Partially threaded hex boltDIN 931
ISO 4017Fully threaded hex boltDIN 933
ASTM A193High-temperature boltsB8 (304), B8M (316)
ASTM F593SS bolts general purposeVarious grades
BS 4190Hex bolts/screwsUK Standard
IS 1364 / IS 1367Hex bolts/nutsIndian Standard

Dimensions & Tolerances


Metric Range: M2 – M100
Imperial Range: 1/8”– 4”
Length: 6 mm – 500 mm


Tolerance: Length tolerance ±0.25 mm
Thread tolerance: As per ISO 965 or ANSI/ASME B1.1

Mechanical & Physical Properties

PropertyRange
Tensile Strength500 – 1200 MPa
Yield Strength210 – 900 MPa
Hardness70 – 250 HB
Density~7.9 g/cm³
Melting Point1400–1450°C
MagnetismAustenitic grades non-magnetic, martensitic & ferritic magnetic

Manufacturing Process

  • Wire Rod Preparation: Pickling & cleaning of SS rod.
  • Cutting: To bolt length.
  • Heading: Hot/cold forging of hex head.
  • Thread Rolling: Rolling (not cutting) for stronger threads.
  • Heat Treatment (if required): For high-tensile grades.
  • Surface Treatment: Passivation, coating, polishing.
  • Inspection: Dimension, threads, mechanical testing.

Surface Treatments & Coatings

  • Passivation: Removes free iron → better corrosion resistance.
  • Polished / Bright Finish: Decorative/clean use.
  • PTFE / Xylan Coating: Low friction, anti-galling.
  • Hot Dip Galvanized (HDG): Rare for SS but used in mixed-material assemblies.
  • Electro-Polishing: Ultra-smooth, hygienic finish (pharma, food).

Installation & Torque

  • Tools Used: Spanner, socket wrench, torque wrench, impact wrench.
  • Torque Values: Must be applied as per grade & size (e.g., M12 A2-70 ≈ 70 Nm).
  • Anti-Seize Compounds: Recommended to prevent galling.
  • Preload: Correct tightening ensures proper clamping force and avoids loosening.

Failure Modes & Prevention

  • Galling / Seizing: Threads lock due to friction → use lubrication or coated bolts.
  • Stress Corrosion Cracking (SCC): Avoid in chloride-rich environments → use A4 or Duplex.
  • Fatigue Failure: From cyclic loading → ensure correct preload.
  • Over-tightening / Under-tightening: Causes bolt breakage or loosening → use torque chart.

Packaging & Marking

  • Head Markings: Grade (A2-70, A4-80), manufacturer logo
  • Packaging: Small: 25–50 pcs in polypack. Bulk: Cartons & wooden pallets
  • Labeling: Size, grade, heat number, country of origin
Hex Bolt Grades – Stanley Alloys

Hex Bolt Grades – Stanley Alloys

Hex Bolts Grade Classification

Hex Bolts Grades Grade / Class / Marking Hex Bolt Type Equivalent Standard
Gr A NutsA307 Gr AASTM A307General-purpose fastening in light structures
A325 Hex BoltsA307 Grade BASTM A325Structural steel connections
Gr B NutsA307 Gr CASTM A307Heavy-duty structural assemblies
B7 Hexagon BoltsF1554 Gr 36ASTM F1554Oil & gas pipelines, pressure vessels
Gr C NutsF1554 Gr 55ASTM F1554High-strength bolted connections
8.8 Hexagon BoltsSAE J429 Gr 2SAE J429Machinery, automotive, mechanical engineering
10.9 Hexagon BoltsA193/A320 B8 Class 1ASTM A193Pressure vessels, pipelines, high-load machinery
12.9 Hexagon BoltsA193/A320 B8MASTM A193Heavy-duty industrial & structural applications
A449 Type 3F3125 A325 Type 1ASTM F3125Bridges, construction, structural steelwork
A193 B7F3125 A325 Type 3ASTM F3125High-pressure flanges, chemical plants
A354 BCSAE J429 Grade 5SAE J429Automotive, machinery, moderate load applications
F1554 105A449 Type 1ASTM A449High-strength steel structures, bridges
A320 L7F3125 A490 Type 1ASTM A320Heavy structural bolts, offshore platforms
A320 L43F3125 A490 Type 3ASTM F3125High-tension applications, large structures
SAE J429 Grade 1/8A354 Gr BDSAE J429Mechanical assemblies, moderate stress applications
20 Types of Bolts – Stanley Alloys

20 Different Types of Bolts and Their Applications – Stanley Alloys

Bolts are essential mechanical fasteners used to join materials in construction, industrial machinery, automotive, marine, and structural applications. At Stanley Alloys, we manufacture and supply premium-quality bolts suitable for diverse environments, providing strength, durability, and corrosion resistance.

Anchor Bolts

  • Applications: Securing structural steel columns, machinery bases, and facade systems to concrete.
  • Material/Finish: Stainless steel, galvanized steel, or alloy steel.
  • Advantages: High tensile and shear strength, ideal for load-bearing connections.
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Arbor Bolts

  • Applications: Tool assemblies such as mitre saw blades.
  • Material/Finish: High-carbon steel, black oxide coating.
  • Advantages: Pre-assembled washer prevents loosening; reverse threads allow secure attachment.
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Blind Bolts

  • Applications: Fastening in restricted spaces where access is limited.
  • Material/Finish: Stainless steel, alloy steel.
  • Advantages: Provides strong connections without welding; ideal for structural repairs.
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Carriage Bolts

  • Applications: Wood-to-metal and metal-to-metal fastening in furniture, gates, and decking.
  • Material/Finish: Galvanized steel, stainless steel.
  • Advantages: Square neck prevents rotation; dome head prevents tampering.
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Elevator Bolts

  • Applications: Conveyor belts, elevator systems, and compact machinery.
  • Material/Finish: Stainless steel or carbon steel.
  • Advantages: Thin head fits flush; prevents interference with moving parts.
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Eye Bolts

  • Applications: Lifting or attaching ropes, chains, or cables to machinery or structures.
  • Material/Finish: Stainless steel, galvanized steel.
  • Advantages: Safe lifting points; rated for axial loads.
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Flange Bolts

  • Applications: Automotive engines, transmission connections, and plumbing assemblies.
  • Material/Finish: Stainless steel, alloy steel.
  • Advantages: Built-in washer distributes load; reduces assembly time and surface damage.
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Hex Bolts

  • Applications: Construction, machinery, and repair work.
  • Material/Finish: Stainless steel, carbon steel, alloy steel.
  • Advantages: Standard hex head allows easy torque application; versatile sizes.
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J-Bolts

  • Applications: Anchoring walls, roofs, and concrete bases.
  • Material/Finish: Carbon steel, stainless steel.
  • Advantages: Bent shape allows casting in concrete; versatile fastening solution.
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Lag Bolts (Lag Screws)

  • Applications: Heavy lumber, large structural timber, and outdoor decking.
  • Material/Finish: Galvanized steel, stainless steel.
  • Advantages: Large coarse threads provide high gripping strength.
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Machine Bolts

  • Applications: Connecting metals and industrial machinery components.
  • Material/Finish: Alloy steel, stainless steel.
  • Advantages: Fully threaded; available in hex, square, flat, or oval heads.
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Hanger Bolts

  • Applications: Attaching legs or supports to furniture and cabinets.
  • Material/Finish: Stainless steel, carbon steel.
  • Advantages: Double-ended design; secure and reliable hidden fastener.
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Plow Bolts

  • Applications: Attaching plowshares, bulldozer blades, and graders.
  • Material/Finish: High-strength steel.
  • Advantages: Countersunk head prevents interference with moving earth; square neck prevents rotation.
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Rock Bolts

  • Applications: Tunnel stabilization, underground mining, rock cuts, and slope reinforcement.
  • Material/Finish: High-tensile steel, epoxy-coated for corrosion resistance.
  • Advantages: Transfers load from weak exterior to strong interior rock; critical in New Austrian Tunneling Method.
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Sex Bolts (Chicago Bolts)

  • Applications: Furniture, signage, partitions, and helmets.
  • Material/Finish: Stainless steel, zinc-plated.
  • Advantages: Smooth, even connection; prevents material damage; ideal for binding multiple layers.
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Shoulder Bolts

  • Applications: Machinery, rotating assemblies, and sliding bearings.
  • Material/Finish: Alloy steel, stainless steel.
  • Advantages: Axial clearance allows rotational movement; smooth bearing surface.
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Socket Head Bolts

  • Applications: Machinery, precision assemblies, and confined spaces.
  • Material/Finish: Alloy steel, stainless steel.
  • Advantages: Hex socket allows tightening without external clearance; compact head design.
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Square Bolts

  • Applications: Restoration projects, traditional machinery, and aesthetic designs.
  • Material/Finish: Galvanized steel, stainless steel.
  • Advantages: Rustic appearance; easy wrench application.
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T-Head Bolts

  • Applications: T-slotted machine fixtures, pipe clamps, and modular assemblies.
  • Material/Finish: Stainless steel, alloy steel.
  • Advantages: Bolts slide into T-slot and lock with a 90° turn; fast and secure installation.
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U-Bolts

  • Applications: Securing pipes, tubes, rods, or cable runs.
  • Material/Finish: Stainless steel, galvanized steel.
  • Advantages: Versatile pipe support; allows pipework alignment and stabilization.
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Stainless Steel Hex Bolts – Stanley Alloys

Stainless Steel Hex Bolts – Stanley Alloys

Looking for high-quality stainless steel hex bolts? Stanley Alloys offers a comprehensive range of hex head fasteners designed for marine, industrial, construction, automotive, and precision engineering applications. Our products are crafted from premium stainless steel grades including A2-70, A4-70, SS 303, 304, 316, 410, 431, 416, 440C, and 304L, ensuring unmatched durability, corrosion resistance, and strength.

Global Standards

  • DIN: DIN 933, DIN 931, DIN EN 14399-4, DIN 601, DIN 558, DIN 7968, DIN 7990
  • ISO: ISO 4014, ISO 4016, ISO 4017, ISO 4018
  • BS & JIS: BS 1083, BS 1768, JIS B1180
  • ASME & ANSI: ASME B18.2.1, ANSI B28.2.4
  • Others: CSN 21301, EU 24016

Dimensions & Threads

  • Metric Sizes (DIN 933): Diameter: M10 – M110, Length: 12 – 1200 mm, Custom lengths available
  • Thread Options: Metric, BSW, BSF, UNC, UNF, UNEF, UNJC, UNJF, UNK, UNR, NPT, NPTF

Bolt Heads & Drive Types

  • Hex head (standard, heavy, flange)
  • Phillips / Slot, Indented hex, Oval, Pan, Flat 82° / 100°
  • Round, Truss, Flat undercut, Fillister head, Six-Lobe

Surface Finishes & Coatings

  • PTFE / Teflon coated
  • Hot-dipped galvanized
  • Phosphate, zinc phosphate, manganese phosphate
  • Zinc electroplating (hexavalent or trivalent)
  • Zinc-aluminium flake coating (ZAC)
  • Cadmium plating
  • Polished, passivated, black oxide, anodized, sand-blasted, rust-preventive oil

Quality Certifications

  • EN 10204 / 3.1 MTC
  • ISO 898-1 & ISO 898-2
  • EN 14399-2 & EN 14399-10
  • ISO 148-1, ISO 6508-1
  • Western Europe origin by default; Eastern origin on request

Why Choose Stanley Alloys?

  • Established Expertise: Serving since 1990
  • Global Network: Western & Eastern Europe, Middle East, Asia, Americas
  • Competitive Pricing: High quality, cost-effective
  • Custom Solutions: Free samples, custom lengths & threads
  • Reliable Delivery: Standard 7–15 days; faster for custom orders
DIN 933 Hex Bolts Dimensions
Bolt Size (M) d1 (mm) K – Head Height (mm) S – Across Flats (mm)
M326.015.5
M42.87.667
M53.58.798
M6411.0510
M85.314.3813
M106.418.917
M127.521.119
M148.824.4922
M161026.7524
M1811.530.1427
M2012.533.5330
M221435.7232
M241539.9836
M271745.241
M3018.750.8546
M332155.3750
M3622.560.7955
M422671.365
M483082.675
DIN 931 Hex Bolts Dimensions
Bolt Size (M) B ≤ 125 mm B ≤ 200 mm B > 200 mm K – Head Height (mm) E – Across Corners (mm) S – Across Flats (mm)
M414--2.87.667
M516--3.58.798
M61824-411.0510
M82228-5.314.3813
M102632456.418.917
M123036497.521.119
M143440538.824.4922
M163844571026.7524
M1842486111.530.1427
M2046526512.533.5330
M225056691435.7232
M245460731539.9836
M276066791745.241
M3066728518.750.8546
M337278912155.3750
M3678849722.560.7955
M4290961092671.365
M45961021152876.9570
M481021081213082.675
DIN 558 Hex Bolts Dimensions
Bolt Size (M) D1 (mm) S (mm) E (mm) K (mm)
M61010.89–4
M81314.2–5.3
M101718.72–6.4
M121920.88–7.5
M162426.17–10
M203032.95–12.5
Hex Bolts Dimensions – Stanley Alloys

Hex Bolts Dimensions – Stanley Alloys

Hex Bolts Dimensional Table

Size Height (H) Basic Height Max Height Min Body Diameter (D) Max Body Diameter Min Width Across Flats (F) Basic F Max F Min Width Across Corners (C) Max C Min
1/211/320.3640.3020.515–3/40.7500.7250.8660.826
5/827/640.4440.3780.642–15/160.9380.9061.0831.033
3/41/20.5240.4550.768–1 1/81.1251.0881.2991.240
7/837/640.6040.5310.895–15/161.3121.2691.5161.447
143/640.7000.5911.022–1 1/21.5001.4501.7321.653
1 1/83/40.7800.6581.149–1 11/161.6881.6311.9491.859
1 1/427/320.8760.7491.277–1 7/81.8751.8122.1652.066
1 3/829/320.9400.8101.404–2 1/162.0621.9942.3822.273
1 1/211.0360.9021.531–2 1/42.2502.1752.5982.480
1 5/813/321.1160.9781.658–2 7/162.4382.3562.8152.616
1 3/415/321.1961.0541.785–2 5/82.6252.5383.0312.893
1 7/81 1/41.2761.1301.912–2 13/162.8122.7193.2483.099
21 11/321.3881.1752.039–33.0002.9003.4643.306
2 1/41 1/21.5481.3272.305–3 3/83.3753.2623.8973.719
2 1/21 21/321.7081.4792.559–3 3/43.7503.6254.3304.133
Stainless Steel Hex Bolts Torque Chart – Stanley Alloys

Stainless Steel Hex Bolts Torque Chart – Stanley Alloys

Torque Values for Small to Medium Bolts (in-lbs)

Size Range 18-8 SS Hex Bolts 316 SS Hex Bolts Silicon Bronze Hex Bolts Monel Hex Bolts Brass Hex Bolts 2024-T4 Aluminum Hex Bolts
4-405.25.54.85.34.32.9
4-486.66.96.16.75.43.6
5-407.78.17.17.86.34.2
5-449.49.88.79.67.75.1
6-329.610.18.99.87.95.3
6-4012.112.711.212.39.96.6
8-3219.820.718.420.216.210.8
8-36222320.422.418.012.0
10-2422.823.821.225.918.613.8
10-3231.733.129.334.925.919.2
1/4-2075.278.868.885.361.545.6
1/4-289499871067757
5/16-1813213812314910780
5/16-2414214713116011686
3/8-16236247219266192143
3/8-24259271240294212157
7/16-14376393349427317228
7/16-20400418371451327242

Torque Values for Larger Bolts (ft-lbs)

Size Range 18-8 SS Hex Bolts 316 SS Hex Bolts Silicon Bronze Hex Bolts Monel Hex Bolts Brass Hex Bolts 2024-T4 Aluminum Hex Bolts
1/2-1343454048.735.226
1/2-20454742513727
9/16-12565953654734
9/16-18626558715138
5/8-119296861117660
5/8-18103108961238567
3/4-1012713111815310482
3/4-1612412911514910280
7/8-9194202178231159124
7/8-14193201177230158124
1-8286299265344235184
1-14259270240311212166
Hex Bolts Hardness Chart – Stanley Alloys

Hex Bolts Hardness Chart – Stanley Alloys

Hardness & Tensile Strength Data

Diameter (mm) Brinell Hardness (3000 kg / 10 mm ball) Rockwell B Rockwell C Approx. Tensile Strength (PSI)
2.85461–48.5242,000
2.90444–47.1230,000
2.95429–45.7219,000
3.00415–44.5212,000
3.05401–43.1202,000
3.10388–41.8193,000
3.15375–40.4184,000
3.20363–39.1177,000
3.25352110.037.9170,000
3.30341109.036.6163,000
3.35331108.535.5158,000
3.40321108.034.3152,000
3.45311107.533.1147,000
3.50302107.032.1143,000
3.55293106.030.9139,000
3.60285105.529.9136,000
3.65277104.528.8131,000
3.70269104.027.6128,000
3.75262103.026.6125,000
3.80255102.025.4121,000
3.85248101.024.2118,000
3.90241100.022.8114,000
3.9523599.021.7111,000
4.0022998.220.5109,000
4.0522397.318.8104,000
4.1021796.417.5103,000
4.1521295.516.0100,000
4.2020794.615.299,000
4.2520193.813.897,000
4.3019792.812.794,000
4.3519291.911.592,000
4.4018790.710.090,000
4.4518390.09.089,000
4.5017989.08.088,000
4.5517487.86.486,000
4.6017086.85.484,000
4.6516786.04.483,000
4.7016385.03.382,000
4.8015682.90.980,000
4.9014980.8––
5.0014378.7––
5.1013776.4––
5.2013174.0––
5.3012672.0––
5.4012169.8––
5.5011667.6––
5.6011165.7––
SS 304 Hex Bolts – Weight Chart

SS 304 Hex Bolts – Approximate Weight Chart

Threads according to IS 1363/67 – Weight in Kgs for 100 Pieces

Length (mm) M5 M6 M8 M10 M12 M14 M16 M18 M20 M22
160.4480.7431.5903.211
200.5980.8121.7113.4114.892
250.6600.8971.8713.6605.2528.170
300.7371.0102.0703.9125.5749.69010.70718.657
350.8041.1202.2714.2235.97410.00011.41616.02619.608
400.8811.2302.4704.5336.41010.28812.10716.66720.747
450.9581.3402.6714.8406.85910.50412.82117.24121.739
501.0301.4502.8705.1557.29911.26113.62417.85722.72728.409
551.5603.0715.4647.74011.62814.40918.86823.81030.120
601.6703.2705.7748.18312.25515.24420.00025.12632.051
Stainless Steel Hex Bolts – Material & Grades

Stainless Steel Hex Bolts – Material & Grades

SS 304 / 304L

  • Standard hex bolts: DIN 933 / DIN 931
  • UNC Hexagonal Bolt
  • Indented Hex Head Bolt
  • Recessed Hex Bolt
  • JIS B1180 Hex Head Bolt

Mechanical & Special Grades

  • A2 / A2-70: Rounded, Fully Threaded, Knurled, Hexagonal
  • A4 / A4-70 / A4-80: Seized, Expansion, Hex Head
  • 8.8 / 4.8: Self-Threading, Thin Head
  • 17-4 PH / 18-8: Din 933, Double Ended, Hexagon
  • ASTM A193 Series: Grade B7m, B8M, B8C, B8T

SS 317 / 317L

  • Extra-Low Head Hex Bolt
  • Pan Head Hex Bolt

SS 321 / 321T

  • Inverted Hex Bolt
  • Heavy Hex Bolt

SS 904L & SS 410

  • Self-Locking Hex Bolt
  • Partially Threaded Hex Bolt
  • ASTM A193 B6 Round Head Hex Bolt

Duplex Steel

  • Duplex 2205 Large Hex Bolt
  • Loosen Hex Bolt

SS 316 / 316L

  • Heavy Security Hex Bolt
  • Easy Out Hex Bolt
  • Hex Bolt for harsh environments

Other

  • 304H Stainless Steel Button Head Hex Bolt
  • Stainless Steel Threaded Hex Bolt
  • Low Head Hex Bolt
  • Hex Head Stainless Steel Bolts

✅ Key Notes: Bolts are available in DIN, ISO, ASTM, and JIS standards. Multiple head types: Standard Hex, Button, Pan, Recessed, Heavy Hex, Knurled, Flat, and Low Head. Material grades are selected based on corrosion resistance, mechanical strength, and application environment. Stanley Alloys can manufacture custom sizes and grades as per client specifications.

Types of Fasteners – Stanley Alloys

  • Stainless Steel Hex Bolts
  • Stainless Steel Shoulder Bolts
  • Stainless Steel Flange Bolts
  • Stainless Steel U Bolts
  • Stainless Steel Eye Bolts
  • Stainless Steel Allen Bolts
  • Stainless Steel T Head Bolts
  • Jack Bolts
  • Square Head Bolts
  • Stainless Steel Anchor Bolts
  • Stainless Steel Carriage Bolts
  • Anti-Theft Nuts and Bolts
  • Hanger Bolts
  • Elevator Bolts
  • 8740 Rod Bolts
  • Stainless Steel Socket Head Cap Screws
  • Stainless Steel Countersunk Screws
  • Stainless Steel Hex Head Screws
  • Stainless Steel Machine Screws
  • Stainless Steel Self-Tapping Screws
  • Stainless Steel Self-Drilling Screws
  • Stainless Steel Roofing Sheet Screws
  • Stainless Steel Drywall Screws
  • Stainless Steel Wood Screws
  • Nuts & Washers
  • Flanges, Fittings, Pipes

Frequently Asked Questions – Stainless Steel Hex Bolts

What stainless steel grades do you offer for hex bolts?
We supply A2-304, A4-316, Duplex (2205), and Super Duplex (2507). Each grade offers different corrosion resistance levels, with A4-316 ideal for marine and chemical environments.
What sizes and thread types are available?
Sizes range from M2 to M100 (metric) and 1/8″ to 4″ (imperial). Thread types include UNC, UNF, ISO metric coarse/fine, fully or partially threaded.
How do I determine the correct torque for hex bolts?
Torque depends on bolt grade, size, and lubrication. Always follow a torque chart. Using anti-seize is recommended to prevent galling.
What finishes and coatings do you provide?
Passivation, electro-polishing, black oxide, PTFE coatings, and custom finishes are available depending on application requirements.
Can you manufacture custom sizes and provide certifications?
Yes, we provide custom hex bolts and certifications such as EN 10204 3.1/3.2, ISO compliance, and Material Test Reports (MTRs).
What industries commonly use stainless steel hex bolts?
Oil & gas, construction, marine, automotive, aerospace, chemical processing, and infrastructure projects.
How do stainless steel hex bolts prevent corrosion?
Stainless steel forms a passive chromium oxide layer on the surface, preventing rust and corrosion. Higher grades offer better protection in harsh environments.
Do you export stainless steel hex bolts worldwide?
Yes, we export globally with compliance to international standards and secure packaging for safe delivery.
How do I maintain stainless steel hex bolts for long-term use?
Regular cleaning to remove debris, avoiding exposure to harsh chemicals, and applying anti-seize or lubrication on threads will ensure long-lasting performance and prevent galling or corrosion.
Stanley Alloys - Products

Our Products

Nuts

Durable, precision-made nuts crafted from high-quality alloys, ensuring strength and reliability in every industrial application.

Bolts

High-strength bolts designed for maximum grip and endurance, providing stability across diverse construction and engineering projects.

Pipe & Pipe Fittings

Precision-engineered pipe fittings with a seamless finish, ensuring leak-proof and long-lasting performance for industrial pipelines.

Contact Information

Visit Our Office

704 A, 7th Floor, Earth Darshan
SVP Road, 8th, Nanubhai Desai Rd,
Girgaon, Mumbai,
Maharashtra 400004

Mail Us

info@stanleyalloys.com

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