Home > Fastening & Joining > Hex Head Cap Screw, Brass

M8x126mm Brass Hex Head Cap Screw | Heavy-Duty Fastening

Expert Overview

This M8x126mm brass hex head cap screw is engineered for demanding environments. Its inherent corrosion resistance and non-sparking properties make it a superior choice for applications where reliability is paramount.

StandardASTM A106
MaterialBrass
FinishPassivated
GradeN/A
SizeM8
Length126mm
Head Width22mm

Detailed Engineering Specifications

Purpose-built for heavy-duty applications, this M8x126mm brass hex head cap screw offers exceptional corrosion resistance, making it ideal for marine, chemical processing, and electrical grounding systems. The material's non-sparking nature is crucial for hazardous environments. The M8 thread provides robust clamping force, while the 126mm length ensures sufficient engagement for substantial material thicknesses. The 22mm hex head width facilitates secure tightening with standard tooling, ensuring a reliable and long-lasting connection in demanding industrial settings.

🧊 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 appropriate tooling (e.g., wrench, socket) matching the 22mm hex head. 2. Ensure mating threads are clean and free of debris. 3. Thread the cap screw into the receiving component until hand-tight, then apply torque to the specified engineering requirements.

Equivalent Standards (Cross-Reference)

Standard SystemDesignation
ISO EquivalentISO 898-1 / ISO 4014
DIN EquivalentDIN 931 / DIN 933
Primary StandardASTM A106

Mechanical Properties

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

Chemical Composition

Copper (Cu)60.0 - 63.0%
Zinc (Zn)Balance
Lead (Pb)2.5 - 3.7%

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)
M8Check CalculatorReduce by 25%

Weight Reference Table

Size / TypeEst. Weight (lbs/100)Shipping Weight (kg)
M8Varies 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
Using excessive force that could strip threads or deform the brass.Apply torque incrementally and in accordance with engineering specifications or design load requirements.
Not cleaning mating threads before installation.Thoroughly clean both the screw threads and the receiving threads to ensure proper engagement and prevent galling.

Common Applications

  • Marine hardware and fittings
  • Electrical grounding and bonding
  • Chemical plant equipment
  • Control panels and enclosures

⚠️ Engineering Warnings

  • Brass is a softer metal than steel; avoid overtightening to prevent thread damage.
  • While corrosion-resistant, brass can react with certain aggressive chemicals; verify compatibility for specific applications.

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, Brass made from?

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

Q: What are the main applications?

A: Marine hardware and fittings, Electrical grounding and bonding, Chemical plant equipment, Control panels and enclosures.

Technical Schematic

HEX BOLT DIAGRAMSAE J429 / ASME B18.2.1HEXHEADLENGTH = 126mmAF22mm1/2"-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.