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M18 x 35mm 304 Stainless Hex Cap Screw | Fasteners

Expert Overview

This M18 x 35mm Hex Head Cap Screw, crafted from high-grade 304 stainless steel, offers exceptional corrosion resistance and robust tensile strength for critical industrial connections.

StandardASTM A106
Material304 Stainless Steel
FinishAnodized
GradeN/A
SizeM18
Length35mm
Head Width16mm

Detailed Engineering Specifications

A proven choice for industrial professionals, this M18 x 35mm Hex Head Cap Screw boasts a nominal diameter of 18mm and a thread pitch suitable for standard M18 applications. Constructed from premium 304 stainless steel, it delivers superior resistance to rust, corrosion, and a wide range of chemicals, making it ideal for harsh environmental conditions and prolonged service life. The precisely machined head features a 16mm hex width, ensuring a secure and efficient torque application with standard tooling. Its 35mm length provides ample thread engagement for most assembly requirements, offering reliable fastening in structural, mechanical, and general industrial applications.

🧊 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 appropriate torque wrench and socket for the 16mm hex head. 2. Ensure mating threads are clean and free of debris. 3. Tighten the screw to the specified torque value for the application, avoiding over-tightening.

Equivalent Standards (Cross-Reference)

Standard SystemDesignation
ISO EquivalentISO 898-1 / ISO 4014
DIN EquivalentDIN 931 / DIN 933
Primary StandardASTM A106

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 excessive force and over-tightening, which can strip threads or compromise material integrity.Always adhere to recommended torque specifications for the specific application and materials being joined.
Not verifying thread compatibility before installation, leading to cross-threading and damage.Confirm that the M18 thread of the cap screw matches the intended mating component.

Common Applications

  • Structural framing and support systems
  • Machinery and equipment assembly
  • Marine and outdoor installations

⚠️ Engineering Warnings

  • Ensure proper personal protective equipment (PPE) is worn during installation.
  • Avoid using abrasive cleaners or materials that could damage the stainless steel surface and compromise corrosion resistance.

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 framing and support systems, Machinery and equipment assembly, Marine and outdoor installations.

Technical Schematic

HEX BOLT DIAGRAMSAE J429 / ASME B18.2.1HEXHEADLENGTH = 35mmAF16mm1/2"-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.