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M18 x 36mm 304 Stainless Steel Hex Cap Screw

Expert Overview

Engineered for robust connections, this M18 x 36mm hex head cap screw offers exceptional durability. Crafted from premium 304 stainless steel, it ensures superior corrosion resistance and tensile strength for critical assemblies.

StandardDIN 933
Material304 Stainless Steel
FinishGalvanized
GradeN/A
SizeM18
Length36mm
Head Width20mm

Detailed Engineering Specifications

A proven choice for industrial professionals, this M18 x 36mm hex head cap screw is manufactured from high-grade 304 stainless steel, offering excellent corrosion resistance and a minimum tensile strength of 515 MPa. The M18 thread provides a secure, high-capacity fastening solution, while the 36mm length allows for joining medium-thickness components. The 20mm head width ensures sufficient bearing surface and accommodates standard M18 hex drivers for efficient installation and disassembly in demanding environments. This specification guarantees reliable performance in a wide array of industrial settings.

🧊 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:Yes

Installation Procedure

1. Select the appropriate M18 tool (e.g., socket wrench or hex key). 2. Ensure the mating threads are clean and free from debris. 3. Thread the cap screw into the receiving component, applying consistent torque until the specified tightness is achieved, avoiding overtightening.

Equivalent Standards (Cross-Reference)

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

Mechanical Properties

Tensile Strength75,000 psi (515 MPa)
Yield Strength30,000 psi (205 MPa)
Elongation in 2 in.40% min
HardnessRockwell B95 max

Chemical Composition

Carbon (C)0.08% max
Chromium (Cr)18.0 - 20.0%
Nickel (Ni)8.0 - 10.5%
Manganese (Mn)2.00% max

Temperature & Environment Rating

Min Operating Temp
-320°F (-195°C)
Max Continuous Temp
1400°F (760°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 / SaltwaterGood
Chemical / AcidicNot Recommended

Common Mistakes & How to Avoid Them

❌ Mistake✅ Correct Approach
Using the wrong size tool, leading to stripped heads or incomplete tightening.Always use the correct M18 hex tool that fits snugly to ensure proper torque application and prevent damage.
Overtightening the screw, which can damage the threads or the components being joined.Tighten to the recommended torque specification for the application. If a torque wrench is not available, tighten until snug and then apply a small additional turn, observing for any resistance.

Common Applications

  • Structural assembly in corrosive environments
  • Machinery and equipment manufacturing
  • Marine and offshore applications

⚠️ Engineering Warnings

  • Ensure compatibility with the mating thread size and material to prevent galling or cross-threading.
  • Always wear appropriate personal protective equipment (PPE) during installation.

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, 304 Stainless Steel made from?

A: This Hex Head Cap Screw, 304 Stainless Steel is manufactured from 304 Stainless Steel.

Q: What are the main applications?

A: Structural assembly in corrosive environments, Machinery and equipment manufacturing, Marine and offshore applications.

Technical Schematic

HEX BOLT DIAGRAMSAE J429 / ASME B18.2.1HEXHEADLENGTH = 36mmAF20mm1/2"-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.