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

M20 x 104mm Brass Hex Head Cap Screw

Expert Overview

Engineered for demanding environments, this M20 x 104mm brass hex head cap screw offers superior corrosion resistance and reliable fastening. Its robust construction ensures lasting performance in challenging industrial and marine applications.

StandardASME B18
MaterialBrass
FinishAnodized
GradeN/A
SizeM20
Length104mm
Head Width23mm

Detailed Engineering Specifications

Purpose-built for heavy-duty applications, this M20 x 104mm hex head cap screw is manufactured from high-grade brass, providing exceptional resistance to corrosion, galvanic action, and a wide range of chemicals. The M20 thread size ensures robust load-bearing capacity, while the 104mm length offers ample engagement for secure fastening in thicker materials. The 23mm hex head width allows for secure grip with standard tooling, facilitating efficient installation and removal. Its inherent non-magnetic properties also make it suitable for sensitive electronic or scientific equipment.

🧊 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 pre-drilled hole, engaging the threads smoothly. 3. Tighten the cap screw using an appropriate wrench or socket to the required torque specification, avoiding overtightening.

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)
M20Check CalculatorReduce by 25%

Weight Reference Table

Size / TypeEst. Weight (lbs/100)Shipping Weight (kg)
M20Varies 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 thread stripping or screw breakage.Adhere to recommended torque specifications for the specific application and material being fastened.
Not cleaning mating threads, which can cause binding and premature wear.Thoroughly clean both the screw threads and the receiving threads before installation.

Common Applications

  • Marine hardware and fittings
  • Electrical connectors and enclosures
  • Chemical processing equipment
  • Architectural accents and fixtures

⚠️ Engineering Warnings

  • Brass can be susceptible to dezincification in aggressive environments; select based on specific chemical exposure.
  • Ensure proper torque is applied to avoid overstressing the fastener or the joined materials.

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 connectors and enclosures, Chemical processing equipment, Architectural accents and fixtures.

Technical Schematic

HEX BOLT DIAGRAMSAE J429 / ASME B18.2.1HEXHEADLENGTH = 104mmAF23mm1/2"-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.