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M6 x 136mm 304 Stainless Steel Hex Cap Screw

Expert Overview

Engineered for superior performance, this M6 x 136mm hex cap screw is forged from high-grade 304 stainless steel. Its robust construction and 18mm head width ensure secure and reliable fastening in demanding applications.

StandardASTM A106
Material304 Stainless Steel
FinishPassivated
GradeN/A
SizeM6
Length136mm
Head Width18mm

Detailed Engineering Specifications

Manufactured under strict quality controls, this M6 x 136mm hex head cap screw features a nominal diameter of M6 and a length of 136mm. Constructed from premium 304 stainless steel, it offers excellent corrosion resistance and tensile strength, making it suitable for environments exposed to moisture or corrosive agents. The 18mm head width provides a substantial bearing surface for optimal torque application and load distribution. Meets ISO 4017 specifications for thread dimensions and tolerances, ensuring interchangeability and consistent performance in industrial assemblies.

🧊 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 appropriate tooling, such as a socket wrench or adjustable wrench, with a size matching the 18mm head width. 2. Ensure mating threads are clean and free of debris. 3. Thread the cap screw into the receiving component, applying consistent torque until the desired tightness is achieved, avoiding overtightening.

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 incorrect tool size for the 18mm head width, leading to stripping or damage.Always use a properly sized socket or wrench that fully engages the hex head to prevent damage and ensure efficient torque transfer.
Overtightening the screw, which can strip threads or compromise material integrity.Apply torque gradually and refer to torque specifications for the specific application and mating materials. Stop when snug and secure.

Common Applications

  • Marine hardware and fittings
  • Industrial machinery and equipment assembly
  • Outdoor structures and architectural elements

⚠️ Engineering Warnings

  • Ensure material compatibility with the mating components to prevent galvanic corrosion.
  • Store in a dry environment to maintain optimal corrosion resistance.

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 fittings, Industrial machinery and equipment assembly, Outdoor structures and architectural elements.

Technical Schematic

HEX BOLT DIAGRAMSAE J429 / ASME B18.2.1HEXHEADLENGTH = 136mmAF18mm1/2"-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.