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M18x36mm Brass Hex Head Cap Screw - Fastening

Expert Overview

This M18x36mm brass hex head cap screw offers superior corrosion resistance and non-sparking properties. Its robust design and precise dimensions ensure reliable fastening in demanding industrial environments.

StandardASTM A106
MaterialBrass
FinishZinc Plated
GradeN/A
SizeM18
Length36mm
Head Width33mm

Detailed Engineering Specifications

A high-performance industrial component, this M18x36mm hex head cap screw is precision-manufactured from solid brass, offering excellent corrosion resistance, good ductility, and inherent non-sparking characteristics. The M18 metric thread pitch ensures secure engagement with standard nuts and tapped holes. With a nominal length of 36mm and a substantial 33mm hex head width, it provides ample torque application for robust connections. Ideal for applications where chemical exposure, moisture, or the risk of ignition is a concern, such as in marine hardware, electrical enclosures, and chemical processing 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. Select the appropriate size and type of nut or tapped hole to mate with the M18 thread. 2. Ensure mating surfaces are clean and free of debris. 3. Insert the cap screw and tighten using a suitable wrench applied to the hex head, applying torque according to design specifications.

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)
M18Check CalculatorReduce by 25%

Weight Reference Table

Size / TypeEst. Weight (lbs/100)Shipping Weight (kg)
M18Varies by dimensionContact Sales

Corrosion Resistance Guide

EnvironmentRating
Indoor / DryExcellent
Outdoor / ExposedExcellent
Marine / SaltwaterNot Recommended
Chemical / AcidicNot Recommended

Common Mistakes & How to Avoid Them

❌ Mistake✅ Correct Approach
Over-tightening brass fastenersApply torque carefully and avoid excessive force, as brass is softer than steel and can strip threads or deform.
Using in high-stress structural applicationsBrass has lower tensile strength than steel; reserve for applications where its specific properties (corrosion resistance, non-sparking) are paramount and structural loads are moderate.

Common Applications

  • Marine Hardware and Fittings
  • Electrical Enclosures and Connectors
  • Chemical Processing Equipment

⚠️ Engineering Warnings

  • Brass is susceptible to dezincification in aggressive environments; consult material compatibility charts for specific applications.
  • While non-sparking, avoid abrasive actions that could generate heat or sparks from the mating surfaces.

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 Enclosures and Connectors, Chemical Processing Equipment.

Technical Schematic

HEX BOLT DIAGRAMSAE J429 / ASME B18.2.1HEXHEADLENGTH = 36mmAF33mm1/2"-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.