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M5x123mm Aluminum 6061 Hex Head Cap Screw

Expert Overview

This M5x123mm Hex Head Cap Screw, crafted from high-strength Aluminum 6061, offers superior corrosion resistance and a lightweight solution for demanding applications. Its precision engineering ensures reliable performance in critical assemblies.

StandardASME B18
MaterialAluminum 6061
FinishAnodized
GradeN/A
SizeM5
Length123mm
Head Width18mm

Detailed Engineering Specifications

Precision-manufactured to tight tolerances, this M5x123mm Hex Head Cap Screw is fabricated from Aluminum 6061, a precipitation-hardened alloy renowned for its excellent strength-to-weight ratio, good corrosion resistance, and weldability. The M5 thread conforms to ISO standards, ensuring compatibility with standard M5 nuts and tapped holes. With a nominal head width of 18mm, this provides ample surface area for torque application via a standard M5 hex key or wrench, facilitating secure fastening. The 123mm length allows for deep engagement in thicker materials or for spanning larger gaps in structural assemblies. Ideal for environments where weight reduction is paramount and galvanic corrosion is a concern.

🧊 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. Select the appropriate torque wrench calibrated for M5 fasteners. 2. Ensure mating threads are clean and free of debris. 3. Thread the cap screw into the receiving component, applying even pressure, until snug. 4. Torque the screw to the manufacturer's specified value for Aluminum 6061, typically between 2-4 Nm for an M5 thread, to avoid overstressing the material or threads.

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)
M5Check CalculatorReduce by 25%

Weight Reference Table

Size / TypeEst. Weight (lbs/100)Shipping Weight (kg)
M5Varies by dimensionContact Sales

Corrosion Resistance Guide

EnvironmentRating
Indoor / DryExcellent
Outdoor / ExposedModerate
Marine / SaltwaterNot Recommended
Chemical / AcidicNot Recommended

Common Mistakes & How to Avoid Them

❌ Mistake✅ Correct Approach
Over-torquing the fastener.Utilize a calibrated torque wrench and adhere to recommended torque values for Aluminum 6061 to prevent thread stripping or material deformation.
Using incompatible thread sizes or pitches.Verify that the M5 thread specification of the cap screw matches the receiving nut or tapped hole for optimal engagement and load-bearing capacity.

Common Applications

  • Aerospace structural components
  • Automotive interior and exterior fittings
  • Marine hardware and boat building
  • Lightweight machine frames and enclosures
  • Custom fabrication and prototyping

⚠️ Engineering Warnings

  • Aluminum 6061 has lower tensile strength than steel; ensure appropriate load ratings are considered for the application.
  • Avoid prolonged exposure to highly corrosive environments without appropriate protective coatings or sealants.

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 interior and exterior fittings, Marine hardware and boat building, Lightweight machine frames and enclosures, Custom fabrication and prototyping.

Technical Schematic

HEX BOLT DIAGRAMSAE J429 / ASME B18.2.1HEXHEADLENGTH = 123mmAF18mm1/2"-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.