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M18 x 37mm Aluminum 6061 Hex Cap Screw - Fastening

Expert Overview

This M18 x 37mm Hex Cap Screw, crafted from robust Aluminum 6061, offers exceptional corrosion resistance and a high strength-to-weight ratio. Engineered for demanding fastening solutions.

StandardISO 9001
MaterialAluminum 6061
FinishGalvanized
GradeN/A
SizeM18
Length37mm
Head Width12mm

Detailed Engineering Specifications

Engineered for reliability and performance, this M18 x 37mm hex head cap screw is manufactured from high-grade Aluminum 6061, renowned for its excellent corrosion resistance, weldability, and moderate strength. The M18 thread size ensures secure engagement, while the 37mm length provides ample grip for a variety of material thicknesses. With a head width of 12mm, it's designed to be compatible with standard M18 hex drivers or wrenches. This alloy is particularly suited for applications where weight reduction is critical, such as in aerospace, automotive, marine, and electronics industries, offering a durable and lightweight fastening solution.

🧊 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. Ensure the mating threads are clean and free of debris. 2. Insert the cap screw, hand-tightening to verify thread engagement. 3. Using a calibrated torque wrench, tighten the screw to the manufacturer's recommended torque specification for Aluminum 6061 fasteners, considering the application's load requirements.

Equivalent Standards (Cross-Reference)

Standard SystemDesignation
ISO EquivalentISO 898-1 / ISO 4014
DIN EquivalentDIN 931 / DIN 933
Primary StandardISO 9001

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)
M18Check CalculatorReduce by 25%

Weight Reference Table

Size / TypeEst. Weight (lbs/100)Shipping Weight (kg)
M18Varies 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
Over-tightening the fastener, which can strip the threads in the softer aluminum material or the mating component.Always use a calibrated torque wrench and adhere to the recommended torque values for Aluminum 6061 fasteners. Consult application-specific engineering guidelines if available.
Using the incorrect tool size, leading to damage to the hex head or incomplete tightening.Utilize the correct size hex driver or wrench (12mm in this case) to ensure proper engagement and prevent damage to the fastener head.
Using in environments with galvanic corrosion potential without appropriate isolation.When dissimilar metals are present, consider using insulating washers or coatings to prevent galvanic corrosion, especially in marine or high-moisture environments.

Common Applications

  • Aerospace structural components
  • Automotive assemblies requiring weight reduction
  • Marine hardware and fittings
  • Electronic enclosures and chassis
  • Custom machinery and equipment

⚠️ Engineering Warnings

  • Aluminum 6061 has lower tensile strength compared to steel; do not use in applications requiring high clamping forces or structural integrity under extreme loads without proper engineering analysis.
  • While corrosion-resistant, prolonged exposure to certain aggressive chemicals or saltwater may degrade the material over time. Regular inspection is recommended.

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, Automotive assemblies requiring weight reduction, Marine hardware and fittings, Electronic enclosures and chassis, Custom machinery and equipment.

Technical Schematic

HEX BOLT DIAGRAMSAE J429 / ASME B18.2.1HEXHEADLENGTH = 37mmAF12mm1/2"-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.