Home > Fastening & Joining > Hex Head Cap Screw, 304 Stainless Steel

M6x80mm 304 Stainless Steel Hex Cap Screws

Expert Overview

High-performance M6x80mm hex head cap screws manufactured from durable 304 stainless steel. Offering superior corrosion resistance and tensile strength for critical fastening applications.

StandardDIN 933
Material304 Stainless Steel
FinishPlain
GradeN/A
SizeM6
Length80mm
Head Width21mm

Detailed Engineering Specifications

Engineered for reliability and performance, these M6x80mm hex head cap screws are precision-machined from premium 304 stainless steel, austenitic alloy renowned for its exceptional corrosion resistance in a wide range of environments, including marine and chemical processing. The M6 thread form ensures robust engagement, while the 80mm length provides ample reach for various assembly depths. The 21mm hex head offers a substantial surface area for torque application, facilitating secure installation and preventing over-stressing of the fastener. This material composition also provides good ductility and weldability, making it suitable for diverse fabrication processes and long-term structural integrity. The inherent non-magnetic properties of 304 stainless steel are beneficial in sensitive electronic or medical equipment 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 the appropriate torque setting based on joint requirements and material substrates. 2. Ensure threads are clean and free from debris before insertion. 3. Apply a consistent, even torque to the hex head using a calibrated wrench or driver to achieve the desired clamping force.

Equivalent Standards (Cross-Reference)

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

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
Over-tightening the fastener, leading to thread stripping or material deformation.Utilize a torque wrench set to the manufacturer's recommended specification for the specific application and materials being joined.
Using the wrong size wrench or socket, resulting in cam-out and damage to the hex head.Always use a wrench or socket that precisely fits the hex head to ensure proper engagement and maximum torque transfer.

Common Applications

  • Structural assembly in outdoor or corrosive environments
  • Marine and offshore equipment fastening
  • Food processing and chemical plant installations

⚠️ Engineering Warnings

  • Ensure compatibility of 304 stainless steel with the specific chemical or environmental exposure.
  • Avoid mixing with dissimilar metals in highly corrosive environments to prevent galvanic corrosion.

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: Structural assembly in outdoor or corrosive environments, Marine and offshore equipment fastening, Food processing and chemical plant installations.

Technical Schematic

HEX BOLT DIAGRAMSAE J429 / ASME B18.2.1HEXHEADLENGTH = 80mmAF21mm1/2"-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.