Home > Fastening & Joining > Hex Head Cap Screw, 316 Stainless Steel

M5 x 108mm 316 Stainless Steel Hex Head Cap Screw

Expert Overview

Engineered for demanding environments, this M5 x 108mm Hex Head Cap Screw is crafted from premium 316 stainless steel. Its robust design ensures exceptional strength and resistance to corrosion, making it a reliable choice for critical fastening needs.

StandardDIN 933
Material316 Stainless Steel
FinishBlack Oxide
GradeN/A
SizeM5
Length108mm
Head Width21mm

Detailed Engineering Specifications

Purpose-built for heavy-duty applications, this M5 x 108mm Hex Head Cap Screw leverages the inherent superior corrosion resistance of 316 stainless steel, making it ideal for use in aggressive environments such as marine, chemical processing, and food production. The M5 thread size provides a strong mechanical bond, while the 108mm length offers significant reach for joining thicker components. The substantial 21mm head width, coupled with its hex drive, allows for high torque application and secure fastening, minimizing the risk of loosening under vibration or stress. This material composition also offers excellent ductility and weldability, ensuring its integrity in diverse fabrication processes.

🧊 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. Ensure the mating threads are clean and free from debris. 2. Insert the cap screw through the aligned components. 3. Tighten securely using an appropriate hex driver, applying recommended torque specifications for M5 fasteners.

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)16.0 - 18.0%
Nickel (Ni)10.0 - 14.0%
Molybdenum (Mo)2.0 - 3.0%

Temperature & Environment Rating

Min Operating Temp
-320°F (-195°C)
Max Continuous Temp
1500°F (815°C)
Thermal Expansion
Typical for Material Class

Recommended Torque Values

Bolt SizeDry Torque (ft-lbs)Lubricated Torque (ft-lbs)
M5Check CalculatorReduce by 25%

Weight Reference Table

Size / TypeEst. Weight (lbs/100)Shipping Weight (kg)
M5Varies by dimensionContact Sales

Corrosion Resistance Guide

EnvironmentRating
Indoor / DryExcellent
Outdoor / ExposedExcellent
Marine / SaltwaterExcellent
Chemical / AcidicGood

Common Mistakes & How to Avoid Them

❌ Mistake✅ Correct Approach
Using excessive force without proper torque wrench, leading to thread stripping.Utilize a calibrated torque wrench to adhere to the recommended torque values for M5 fasteners, preventing damage to both the screw and the mating component.
Employing non-compatible tools, resulting in hex head damage.Always use a correctly sized hex (Allen) wrench or socket that fits snugly into the screw's drive recess to avoid cam-out and stripping.

Common Applications

  • Marine hardware and shipbuilding
  • Chemical processing equipment
  • Food and beverage machinery
  • Outdoor structural assemblies

⚠️ Engineering Warnings

  • Ensure material compatibility with the surrounding environment to prevent galvanic corrosion.
  • Always verify torque specifications for the specific application to maintain joint integrity and prevent over-tightening.

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, 316 Stainless Steel made from?

A: This Hex Head Cap Screw, 316 Stainless Steel is manufactured from 316 Stainless Steel.

Q: What are the main applications?

A: Marine hardware and shipbuilding, Chemical processing equipment, Food and beverage machinery, Outdoor structural assemblies.

Technical Schematic

HEX BOLT DIAGRAMSAE J429 / ASME B18.2.1HEXHEADLENGTH = 108mmAF21mm1/2"-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.