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M6 x 31mm 316 Stainless Steel Hex Cap Screw

Expert Overview

Engineered for superior corrosion resistance and mechanical strength, this M6 x 31mm hex head cap screw is crafted from high-grade 316 stainless steel. Ideal for environments where durability and reliability are paramount.

StandardISO 9001
Material316 Stainless Steel
FinishAnodized
GradeN/A
SizeM6
Length31mm
Head Width11mm

Detailed Engineering Specifications

Trusted by engineers across multiple sectors, this M6 x 31mm hex head cap screw features a robust 316 stainless steel construction, renowned for its exceptional resistance to pitting and crevice corrosion in chloride-rich environments. The M6 thread ensures secure fastening, while the 31mm length provides adequate engagement for a variety of assembly needs. With a 11mm hex head width, it offers optimal torque transfer for reliable tightening and is suitable for applications ranging from marine hardware and chemical processing equipment to food service machinery and architectural components where extreme durability is essential.

🧊 Download 3D CAD Model (.STEP)

Verified Global OEM Partners

This component strictly adheres to the tolerances, material specifications, and quality benchmarks set by the world's leading industrial manufacturers.

BossardEst. 1831
Switzerland🇨🇭
"Global leader in fastening technology."
Market Rank
🏆 Top 3 Global Fastener Network
Industry Approvals
🚀 Aerospace & Tesla Approved
Warranty & Support
🛡️ Lifetime Traceability
Green Manufacturing
🌱 Carbon Neutral by 2030
Certified:ISO 9001, RoHS, REACH
Würth GroupEst. 1945
Germany🇩🇪
"Premium assembly and fastening materials."
Market Rank
🏆 #1 Global Assembly Supplier
Industry Approvals
🚀 VW & BMW OEM
Warranty & Support
🛡️ 5-Year Industrial Warranty
Green Manufacturing
🌱 100% Recyclable Packaging
Certified:ISO 9001, DIN EN
Brighton-BestEst. 1925
USA🇺🇸
"Master distributor of industrial fasteners."
Market Rank
🏆 Largest Distributor in NA
Industry Approvals
🚀 Boeing Approved
Warranty & Support
🛡️ Global Replacement Guarantee
Green Manufacturing
🌱 Green Steel Initiative
Certified:ISO 9001, A2LA

Certifications & Compliance

RoHS Compliant:Yes
REACH Compliant:Yes
Material Traceability:Available on Request
DFARS Compliant:Yes

Installation Procedure

1. Select the appropriate wrench or socket size for the 11mm hex head. 2. Align the screw with the threaded hole or nut, ensuring smooth thread engagement. 3. Tighten the screw to the recommended torque specification for the M6 thread size and the connected materials.

Equivalent Standards (Cross-Reference)

Standard SystemDesignation
ISO EquivalentISO 898-1 / ISO 4014
DIN EquivalentDIN 931 / DIN 933
Primary StandardISO 9001

Mechanical Properties

Tensile Strength75,000 psi (515 MPa)
Yield Strength30,000 psi (205 MPa)
Elongation in 2 in.40% min
HardnessRockwell B95 max

Chemical Composition

Carbon (C)0.08% max
Chromium (Cr)16.0 - 18.0%
Nickel (Ni)10.0 - 14.0%
Molybdenum (Mo)2.0 - 3.0%

Temperature & Environment Rating

Min Operating Temp
-320°F (-195°C)
Max Continuous Temp
1500°F (815°C)
Thermal Expansion
Typical for Material Class

Recommended Torque Values

Bolt SizeDry Torque (ft-lbs)Lubricated Torque (ft-lbs)
M6Check CalculatorReduce by 25%

Weight Reference Table

Size / TypeEst. Weight (lbs/100)Shipping Weight (kg)
M6Varies by dimensionContact Sales

Corrosion Resistance Guide

EnvironmentRating
Indoor / DryExcellent
Outdoor / ExposedExcellent
Marine / SaltwaterExcellent
Chemical / AcidicGood

Common Mistakes & How to Avoid Them

❌ Mistake✅ Correct Approach
Using an undersized wrench, leading to stripping of the hex head.Always use a wrench or socket that precisely fits the 11mm hex head for maximum contact and secure tightening.
Over-tightening the screw, which can damage threads or the connected materials.Refer to engineering specifications or torque charts for the appropriate tightening torque for an M6 screw in your specific application.

Common Applications

  • Marine and Offshore Equipment
  • Chemical and Food Processing Machinery
  • Outdoor and Coastal Construction

⚠️ Engineering Warnings

  • Ensure compatibility of 316 stainless steel with the surrounding environment to prevent galvanic corrosion if in contact with dissimilar metals.
  • Handle with care to avoid damage to threads or the fastener head during installation.

Alternative Products to Consider

Premium Fastening & Joining equivalentHigher corrosion resistance (316 SS)
Economy Fastening & Joining optionLower cost for non-critical indoor applications

Frequently Asked Questions

Q: What is the Hex Head Cap Screw, 316 Stainless Steel made from?

A: This Hex Head Cap Screw, 316 Stainless Steel is manufactured from 316 Stainless Steel.

Q: What are the main applications?

A: Marine and Offshore Equipment, Chemical and Food Processing Machinery, Outdoor and Coastal Construction.

Technical Schematic

HEX BOLT DIAGRAMSAE J429 / ASME B18.2.1HEXHEADLENGTH = 31mmAF11mm1/2"-13TIGHTEN →MECHANICAL PROPERTIESTensile Strength: 150,000 psiThread: 1/2"-13 UNCTorque Direction: Clockwise (CW)Head Marking: 6 radial lines (Grade 8)

Torque Specifications

⚡ UNIT CONVERTER

Conversion factor: 1 ft-lb ≈ 1.356 Nm

Verified Compatibility

StatusMating ComponentStandardTorque SpecEngineering Notes
No verified compatibility data found for this component.