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M20 x 22mm 304 Stainless Steel Hex Cap Screw

Expert Overview

Engineered for robust performance, this M20 x 22mm hex head cap screw is crafted from premium 304 stainless steel. It offers exceptional corrosion resistance and durability, making it ideal for critical industrial fastening applications.

StandardASTM A106
Material304 Stainless Steel
FinishPlain
GradeN/A
SizeM20
Length22mm
Head Width34mm

Detailed Engineering Specifications

A proven choice for industrial professionals, this M20 x 22mm hex head cap screw is manufactured from high-grade 304 stainless steel, renowned for its excellent resistance to corrosion and pitting, even in harsh environments. The M20 nominal diameter ensures substantial load-bearing capacity, while the 22mm length provides adequate thread engagement for most common applications. The precisely formed hex head, with a width of 34mm, allows for secure tightening with standard wrenches or sockets, ensuring a reliable and strong joint. This material composition also offers good tensile strength and formability, making it suitable for a wide range of assembly and repair tasks in manufacturing, construction, and marine sectors.

🧊 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. Ensure the mating threads are clean and free of debris. 2. Align the cap screw with the threaded hole and hand-tighten to engage the threads. 3. Using an appropriately sized wrench or socket, tighten the cap screw to the recommended torque specification for the application.

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)
M20Check CalculatorReduce by 25%

Weight Reference Table

Size / TypeEst. Weight (lbs/100)Shipping Weight (kg)
M20Varies 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 excessive force, leading to thread stripping or fastener breakage.Always adhere to the specified torque values for the application. Utilize a torque wrench for precise control.
Selecting a fastener with inadequate corrosion resistance for the operating environment.Verify that the 304 stainless steel grade is suitable for the expected chemical exposure, moisture levels, and temperature fluctuations.

Common Applications

  • Machinery and Equipment Assembly
  • Structural Steel Connections
  • Marine and Offshore Hardware

⚠️ Engineering Warnings

  • Always use appropriate personal protective equipment (PPE) during installation.
  • Ensure proper thread engagement to avoid premature failure or cross-threading.

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: Machinery and Equipment Assembly, Structural Steel Connections, Marine and Offshore Hardware.

Technical Schematic

HEX BOLT DIAGRAMSAE J429 / ASME B18.2.1HEXHEADLENGTH = 22mmAF34mm1/2"-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.