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

M11 x 64mm 304 Stainless Steel Hex Cap Screw

Expert Overview

Engineered for superior performance in corrosive environments, this M11 x 64mm Hex Head Cap Screw is crafted from premium 304 stainless steel, ensuring exceptional durability and reliability for critical fastening tasks.

StandardDIN 933
Material304 Stainless Steel
FinishZinc Plated
GradeN/A
SizeM11
Length64mm
Head Width21mm

Detailed Engineering Specifications

Purpose-built for heavy-duty applications, this M11 x 64mm hex head cap screw features a robust 304 stainless steel construction, renowned for its excellent corrosion resistance, high tensile strength, and non-magnetic properties. The 21mm head width provides ample surface area for secure torque application with standard hex drivers. Ideal for environments exposed to moisture, chemicals, or saltwater, its inherent strength and durability make it a preferred choice for structural assemblies, machinery, and marine applications where long-term performance is paramount.

🧊 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 size and length of the M11 x 64mm hex head cap screw for the application. 2. Ensure mating components are clean and free from debris or damage. 3. Thread the cap screw into the receiving component, applying consistent torque with a calibrated hex driver until the desired tightness is achieved, avoiding over-tightening.

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)
M11Check CalculatorReduce by 25%

Weight Reference Table

Size / TypeEst. Weight (lbs/100)Shipping Weight (kg)
M11Varies 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 or length of screw, leading to inadequate clamping force or component damage.Always verify the required screw size and length against engineering drawings or application specifications before installation.
Over-tightening the screw, which can strip threads, deform components, or reduce fastener fatigue life.Utilize a torque wrench set to the manufacturer's recommended torque specifications for the screw and application.
Using carbon steel screws in corrosive environments, leading to premature rust and fastener failure.For applications exposed to moisture, chemicals, or saltwater, exclusively use 304 or 316 stainless steel fasteners.

Common Applications

  • Structural steel connections
  • Marine hardware and equipment
  • Industrial machinery and equipment assembly
  • Chemical processing plants
  • Food processing equipment

⚠️ Engineering Warnings

  • Ensure proper thread engagement to avoid stripping or cross-threading.
  • Always use appropriate personal protective equipment (PPE) 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, 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 steel connections, Marine hardware and equipment, Industrial machinery and equipment assembly, Chemical processing plants, Food processing equipment.

Technical Schematic

HEX BOLT DIAGRAMSAE J429 / ASME B18.2.1HEXHEADLENGTH = 64mmAF21mm1/2"-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.