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M6 x 39mm 304 Stainless Steel Hex Cap Screws

Expert Overview

Engineered for superior performance, this M6 x 39mm Hex Cap Screw is crafted from durable 304 stainless steel. Its robust design and precise dimensions ensure reliable fastening in challenging environments.

StandardASTM A106
Material304 Stainless Steel
FinishAnodized
GradeN/A
SizeM6
Length39mm
Head Width23mm

Detailed Engineering Specifications

Built to exacting engineering tolerances, this M6 x 39mm hex head cap screw provides exceptional structural integrity and thread engagement. Fabricated from premium 304 stainless steel, it offers excellent corrosion resistance and tensile strength, making it ideal for marine, food processing, and general industrial applications where cleanliness and durability are paramount. The 23mm head width ensures adequate torque transfer for secure fastening. Its metric thread profile conforms to international standards for universal compatibility.

🧊 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 for the M6 hex head. 2. Align the screw with the pre-drilled or tapped hole. 3. Engage the threads and tighten the screw progressively to the desired torque specification, avoiding overtightening. 4. Ensure a snug fit without stripping the threads or damaging the mating components.

Equivalent Standards (Cross-Reference)

Standard SystemDesignation
ISO EquivalentISO 898-1 / ISO 4014
DIN EquivalentDIN 931 / DIN 933
Primary StandardASTM A106

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)18.0 - 20.0%
Nickel (Ni)8.0 - 10.5%
Manganese (Mn)2.00% max

Temperature & Environment Rating

Min Operating Temp
-320°F (-195°C)
Max Continuous Temp
1400°F (760°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 / SaltwaterGood
Chemical / AcidicNot Recommended

Common Mistakes & How to Avoid Them

❌ Mistake✅ Correct Approach
Using the wrong size wrench, leading to stripped hex heads.Always use the correct size metric socket or wrench for the M6 hex head to ensure proper torque application and prevent damage.
Cross-threading the screw during installation.Start threading the screw by hand to ensure it engages correctly before applying any tool torque. If resistance is met, back it out and re-align.

Common Applications

  • Marine hardware and boat building
  • Food and beverage processing equipment
  • Chemical processing plants
  • Outdoor structural assemblies

⚠️ Engineering Warnings

  • Ensure material compatibility with the surrounding environment to prevent galvanic corrosion, especially when joining dissimilar metals.
  • Adhere to recommended torque specifications to avoid material fatigue or failure of threaded connections.

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, 304 Stainless Steel made from?

A: This Hex Head Cap Screw, 304 Stainless Steel is manufactured from 304 Stainless Steel.

Q: What are the main applications?

A: Marine hardware and boat building, Food and beverage processing equipment, Chemical processing plants, Outdoor structural assemblies.

Technical Schematic

HEX BOLT DIAGRAMSAE J429 / ASME B18.2.1HEXHEADLENGTH = 39mmAF23mm1/2"-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.