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

M17 x 145mm 316 Stainless Steel Hex Cap Screw

Expert Overview

Engineered for critical applications, this M17 x 145mm hex head cap screw is manufactured from premium 316 stainless steel, offering exceptional strength and corrosion resistance.

StandardASME B18
Material316 Stainless Steel
FinishGalvanized
GradeN/A
SizeM17
Length145mm
Head Width19mm

Detailed Engineering Specifications

A high-performance industrial component, this M17 hex head cap screw features a nominal diameter of 17mm and a substantial length of 145mm. The head width measures 19mm, providing ample surface area for torque application with standard tooling. Constructed from 316 stainless steel, it boasts superior resistance to pitting, crevice corrosion, and general corrosion, particularly in saline, acidic, and chloride-rich environments. This material composition makes it ideal for marine, chemical processing, and outdoor infrastructure where longevity and reliability are paramount.

🧊 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 threads of the mating component are clean and free from debris. 2. Apply appropriate lubricant if required by the application's torque specifications. 3. Drive the hex head cap screw using a calibrated torque wrench to the specified torque value, ensuring uniform tension across all fasteners.

Equivalent Standards (Cross-Reference)

Standard SystemDesignation
ISO EquivalentISO 898-1 / ISO 4014
DIN EquivalentDIN 931 / DIN 933
Primary StandardASME B18

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)
M17Check CalculatorReduce by 25%

Weight Reference Table

Size / TypeEst. Weight (lbs/100)Shipping Weight (kg)
M17Varies by dimensionContact Sales

Corrosion Resistance Guide

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

Common Mistakes & How to Avoid Them

❌ Mistake✅ Correct Approach
Over-tightening the screw, leading to thread stripping or fastener fatigue.Utilize a calibrated torque wrench and adhere strictly to recommended torque values for the specific application and mating materials.
Using incompatible tools or damaged tools on the hex head, resulting in cam-out and stripped heads.Employ correctly sized, high-quality hex sockets or wrenches that fit snugly to prevent slippage and damage.

Common Applications

  • Marine hardware and offshore structures
  • Chemical processing equipment and piping
  • Food and beverage processing machinery

⚠️ Engineering Warnings

  • Ensure compatibility of 316 stainless steel with the specific chemicals or environments it will be exposed to, as some highly aggressive media can still cause degradation.
  • Do not use with tools or methods that exert excessive side-load on the fastener, which could lead to premature failure.

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 offshore structures, Chemical processing equipment and piping, Food and beverage processing machinery.

Technical Schematic

HEX BOLT DIAGRAMSAE J429 / ASME B18.2.1HEXHEADLENGTH = 145mmAF19mm1/2"-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.