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M16 x 42mm 304 Stainless Steel Hex Cap Screw

Expert Overview

Engineered for superior performance, this M16 x 42mm hex cap screw offers robust fastening with exceptional corrosion resistance. Crafted from premium 304 stainless steel, it ensures durability in challenging environments.

StandardDIN 933
Material304 Stainless Steel
FinishPassivated
GradeN/A
SizeM16
Length42mm
Head Width13mm

Detailed Engineering Specifications

Specified by design engineers worldwide, this M16 x 42mm hex head cap screw is manufactured from 304 stainless steel, renowned for its excellent corrosion resistance and moderate strength. The nominal diameter is M16, with a precise length of 42mm and a hex head width of 13mm, ensuring compatibility with standard tooling and mating components. This material grade is non-magnetic and offers good formability, making it suitable for a wide range of general-purpose fastening applications in corrosive or humid conditions.

🧊 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 size socket wrench or spanner for the M13 head width. 2. Ensure the mating threads are clean and free from debris. 3. Thread the screw into the receiving component by hand to confirm proper engagement before applying torque.

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)
M16Check CalculatorReduce by 25%

Weight Reference Table

Size / TypeEst. Weight (lbs/100)Shipping Weight (kg)
M16Varies 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
Over-tightening the screw, leading to thread stripping or component damage.Use a torque wrench set to the manufacturer's recommended specification for the mating component and screw size.
Using a non-standard or worn tool, which can damage the hex head and compromise torque application.Always use a correctly sized, high-quality socket or spanner that fits snugly onto the hex head.

Common Applications

  • Marine hardware and shipbuilding
  • Food processing equipment
  • Chemical processing plants
  • Outdoor structures and architectural elements

⚠️ Engineering Warnings

  • While 304 stainless steel offers good corrosion resistance, it is susceptible to crevice corrosion and pitting in highly aggressive chloride environments. Consider higher-grade stainless steels for such applications.
  • Ensure proper galvanic isolation if mating with dissimilar metals to prevent galvanic corrosion.

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: Marine hardware and shipbuilding, Food processing equipment, Chemical processing plants, Outdoor structures and architectural elements.

Technical Schematic

HEX BOLT DIAGRAMSAE J429 / ASME B18.2.1HEXHEADLENGTH = 42mmAF13mm1/2"-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.