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M9x31mm Hex Head Cap Screw - Aluminum 6061

Expert Overview

This M9x31mm Hex Head Cap Screw, crafted from high-strength Aluminum 6061, offers exceptional corrosion resistance and a favorable strength-to-weight ratio. Designed for reliable fastening in diverse industrial environments.

StandardASME B18
MaterialAluminum 6061
FinishZinc Plated
GradeN/A
SizeM9
Length31mm
Head Width14mm

Detailed Engineering Specifications

Built to exacting engineering tolerances, this M9x31mm Hex Head Cap Screw features a 14mm head width for secure torque application. Constructed from Aluminum 6061, it boasts excellent corrosion resistance and a lightweight profile, making it ideal for aerospace, marine, and automotive assemblies where weight reduction and durability are paramount. Its precise dimensions ensure consistent performance and seamless integration into demanding structural and mechanical applications, meeting stringent industry standards for reliability and longevity.

🧊 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:N/A

Installation Procedure

1. Clean mating surfaces and threads to remove any debris or contaminants. 2. Hand-tighten the cap screw to engage threads properly. 3. Use an appropriately sized wrench or socket to tighten the screw to the specified torque value, avoiding over-tightening.

Equivalent Standards (Cross-Reference)

Standard SystemDesignation
ISO EquivalentISO 898-1 / ISO 4014
DIN EquivalentDIN 931 / DIN 933
Primary StandardASME B18

Mechanical Properties

Tensile StrengthStandard Commercial Spec
Yield StrengthStandard Commercial Spec
HardnessVaries by specific batch

Temperature & Environment Rating

Min Operating Temp
-20°F (-29°C)
Max Continuous Temp
400°F (204°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 / SaltwaterNot Recommended
Chemical / AcidicNot Recommended

Common Mistakes & How to Avoid Them

❌ Mistake✅ Correct Approach
Using a wrench that does not fit the hex head snugly, leading to cam-out and potential damage to the fastener or tool.Ensure the wrench or socket is the correct size and fits the hex head of the cap screw with minimal play.
Applying excessive torque, which can strip the threads or deform the fastener, compromising its structural integrity.Always consult torque specifications for the application and material being joined, and use a calibrated torque wrench.

Common Applications

  • Aerospace structural components
  • Marine hardware and assemblies
  • Automotive chassis and interior fittings

⚠️ Engineering Warnings

  • Aluminum fasteners can gall if improperly lubricated or cross-threaded; use appropriate anti-seize compounds if necessary.
  • While corrosion-resistant, prolonged exposure to certain harsh chemicals may degrade Aluminum 6061; verify compatibility for specific environments.

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, Aluminum 6061 made from?

A: This Hex Head Cap Screw, Aluminum 6061 is manufactured from Aluminum 6061.

Q: What are the main applications?

A: Aerospace structural components, Marine hardware and assemblies, Automotive chassis and interior fittings.

Technical Schematic

HEX BOLT DIAGRAMSAE J429 / ASME B18.2.1HEXHEADLENGTH = 31mmAF14mm1/2"-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.