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M11x128mm Brass Hex Head Cap Screw | Fastening & Joining

Expert Overview

This M11 x 128mm brass hex head cap screw offers superior corrosion resistance and excellent electrical conductivity. Its robust construction ensures reliable fastening for demanding environments.

StandardASME B18
MaterialBrass
FinishAnodized
GradeN/A
SizeM11
Length128mm
Head Width28mm

Detailed Engineering Specifications

Manufactured under strict quality controls, this M11 x 128mm hex head cap screw is fabricated from high-grade brass, providing exceptional resistance to corrosion and tarnishing, particularly in marine and humid conditions. The M11 thread size ensures a secure and robust connection, with a generous 128mm length for applications requiring extended reach or significant material grip. The 28mm hex head width facilitates high torque application with standard tooling, ensuring a tight and stable joint. Brass's inherent non-sparking properties also make it suitable for environments where static discharge is a concern. Its ductility allows for some deformation without fracture, contributing to its reliability under stress.

🧊 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 mating component with a tapped hole or nut of M11 thread size. 2. Insert the cap screw through the clearance holes of the components to be joined. 3. Tighten the cap screw using a suitable wrench on the 28mm hex head until the desired clamping force is achieved, avoiding over-tightening to prevent thread stripping or component damage.

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

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)
M11Check CalculatorReduce by 25%

Weight Reference Table

Size / TypeEst. Weight (lbs/100)Shipping Weight (kg)
M11Varies 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 the wrong size wrench, leading to stripped hex heads.Always use a wrench that precisely fits the 28mm hex head to ensure proper torque transfer and prevent damage.
Over-tightening the screw, which can damage the threads or the mating component.Apply steady, consistent torque. For critical applications, use a torque wrench to adhere to specified torque values.
Cross-threading the screw during installation.Ensure the screw is started straight and turned by hand for the first few threads to confirm proper engagement before applying a wrench.

Common Applications

  • Marine hardware and fittings
  • Electrical connections and enclosures
  • Architectural decorative elements
  • Corrosion-resistant assemblies

⚠️ Engineering Warnings

  • Brass is a softer material than steel; avoid use in applications requiring extremely high tensile strength or shear strength.
  • While corrosion-resistant, brass can react with certain chemicals. Consult material compatibility charts 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, 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 connections and enclosures, Architectural decorative elements, Corrosion-resistant assemblies.

Technical Schematic

HEX BOLT DIAGRAMSAE J429 / ASME B18.2.1HEXHEADLENGTH = 128mmAF28mm1/2"-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.