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

M20 x 117mm Brass Hex Head Cap Screw | Corrosion Resistant

Expert Overview

Engineered for demanding environments, this M20 x 117mm Brass Hex Head Cap Screw provides exceptional corrosion resistance and aesthetic appeal. Ideal for applications where both performance and appearance are critical.

StandardASME B18
MaterialBrass
FinishAnodized
GradeN/A
SizeM20
Length117mm
Head Width24mm

Detailed Engineering Specifications

Trusted by engineers across multiple sectors, this M20 x 117mm Hex Head Cap Screw is fabricated from high-grade brass, renowned for its excellent corrosion resistance, particularly in marine and humid environments, and its inherent non-magnetic properties and good electrical conductivity. The M20 thread size ensures robust fastening capabilities, while the 117mm length offers significant reach. With a precise 24mm head width, it is designed for use with standard metric hex wrenches, facilitating secure and efficient installation in applications ranging from electrical grounding to decorative architectural fixtures.

🧊 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 receiving thread is clean and free of debris. 2. Hand-thread the cap screw to verify alignment and prevent cross-threading. 3. Tighten using an appropriate metric hex wrench to the specified torque, avoiding over-tightening.

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 damage or fastener breakage.Consult torque specifications for brass fasteners and use a calibrated torque wrench for accurate tightening.
Cross-threading due to improper alignment during initial engagement.Always hand-thread the fastener for the first few turns to ensure correct thread engagement before applying tools.

Common Applications

  • Marine hardware and fittings
  • Electrical grounding and bonding
  • Decorative architectural elements
  • Food processing equipment (where non-sparking is required)

⚠️ Engineering Warnings

  • Brass is a softer metal than steel; avoid using excessive force during installation.
  • While corrosion-resistant, brass can tarnish over time; consider appropriate coatings or regular maintenance if a bright finish is paramount.

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, Decorative architectural elements, Food processing equipment (where non-sparking is required).

Technical Schematic

HEX BOLT DIAGRAMSAE J429 / ASME B18.2.1HEXHEADLENGTH = 117mmAF24mm1/2"-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.