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M9 x 134mm 304 Stainless Steel Hex Cap Screw

Expert Overview

This M9 x 134mm Hex Head Cap Screw, constructed from durable 304 stainless steel, offers superior strength and corrosion resistance. Engineered for reliability in demanding environments.

StandardDIN 933
Material304 Stainless Steel
FinishAnodized
GradeN/A
SizeM9
Length134mm
Head Width20mm

Detailed Engineering Specifications

A high-performance industrial component, this M9 x 134mm Hex Head Cap Screw is manufactured from premium 304 stainless steel, renowned for its excellent corrosion resistance, particularly in marine and chemical environments, and its robust mechanical properties, including good tensile and shear strength. The M9 thread designation signifies a metric coarse thread pitch, ensuring secure fastening. With a total length of 134mm and a head width of 20mm, this screw is designed for applications requiring substantial grip and torque, suitable for structural assemblies, machinery, and outdoor installations where longevity and performance are critical.

🧊 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. Insert the cap screw into the designated hole, engaging the threads by hand. 3. Tighten the screw using an appropriate wrench or socket to the recommended torque specification for the application, ensuring a secure fit without 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)
M9Check CalculatorReduce by 25%

Weight Reference Table

Size / TypeEst. Weight (lbs/100)Shipping Weight (kg)
M9Varies 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 head or improper torque.Always use a correctly sized metric wrench or socket for the 20mm hex head to ensure proper engagement and torque application.
Cross-threading the screw, damaging both the screw and the mating component.Carefully start threading by hand to confirm alignment before applying any significant force.

Common Applications

  • Structural steel connections
  • Machinery and equipment assembly
  • Marine and offshore hardware
  • Chemical processing equipment

⚠️ Engineering Warnings

  • Ensure compatibility of 304 stainless steel with the surrounding environment to prevent galvanic corrosion.
  • Do not exceed the recommended torque limits for the mating component to avoid damage.

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, Machinery and equipment assembly, Marine and offshore hardware, Chemical processing equipment.

Technical Schematic

HEX BOLT DIAGRAMSAE J429 / ASME B18.2.1HEXHEADLENGTH = 134mmAF20mm1/2"-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.