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

M12 x 149mm Brass Hex Head Cap Screw | Fastening

Expert Overview

This M12 x 149mm brass hex head cap screw offers superior corrosion resistance and excellent electrical conductivity. Designed for demanding environments and applications where aesthetic appeal is paramount.

StandardDIN 933
MaterialBrass
FinishAnodized
GradeN/A
SizeM12
Length149mm
Head Width16mm

Detailed Engineering Specifications

Specified by design engineers worldwide, this M12 x 149mm brass hex head cap screw exhibits a nominal diameter of M12 with a substantial length of 149mm. The hex head measures 16mm across flats, ensuring a secure grip for installation and removal. Manufactured from premium brass alloy, it provides inherent resistance to corrosion, particularly in marine and humid environments, and possesses excellent electrical conductivity, making it suitable for electrical grounding and connection applications. The material's inherent malleability also allows for less risk of galling compared to some steel fasteners.

🧊 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 from debris. 2. Insert the cap screw into the designated hole, ensuring full thread engagement. 3. Tighten the cap screw using an appropriate wrench or socket to the specified torque value, taking care not to overtighten.

Equivalent Standards (Cross-Reference)

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

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)
M12Check CalculatorReduce by 25%

Weight Reference Table

Size / TypeEst. Weight (lbs/100)Shipping Weight (kg)
M12Varies 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, leading to stripped threads or fastener breakage.Always adhere to recommended torque specifications for the material and application.
Using incorrect tool size, resulting in damaged hex head or incomplete tightening.Utilize a wrench or socket precisely matching the 16mm head width.

Common Applications

  • Marine hardware and fixtures
  • Electrical grounding and connector components
  • Decorative trim and architectural elements
  • Corrosion-resistant assemblies

⚠️ Engineering Warnings

  • Brass may deform under excessive torque; do not overtighten.
  • Not suitable for high-strength structural applications where steel fasteners are typically required.

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 fixtures, Electrical grounding and connector components, Decorative trim and architectural elements, Corrosion-resistant assemblies.

Technical Schematic

HEX BOLT DIAGRAMSAE J429 / ASME B18.2.1HEXHEADLENGTH = 149mmAF16mm1/2"-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.