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M14x20mm 304 Stainless Hex Head Cap Screw

Expert Overview

Engineered for robust fastening, this M14x20mm Hex Head Cap Screw is crafted from premium 304 stainless steel, offering superior corrosion resistance and tensile strength for critical applications.

StandardASTM A106
Material304 Stainless Steel
FinishGalvanized
GradeN/A
SizeM14
Length20mm
Head Width18mm

Detailed Engineering Specifications

Purpose-built for heavy-duty applications, this M14x20mm Hex Head Cap Screw boasts a 20mm length and an 18mm head width, ensuring substantial torque transfer and secure fastening. Manufactured from 304 stainless steel, it provides excellent resistance to corrosion, pitting, and crevice corrosion, making it ideal for environments exposed to moisture, chemicals, or saltwater. Its high tensile strength ensures reliable performance under significant load, preventing loosening and maintaining structural integrity in demanding industrial, marine, and outdoor settings. Conforming to relevant industry standards, this fastener delivers consistent quality and performance for critical assembly requirements.

🧊 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 wrench or socket size to engage the hex head securely. 2. Thread the cap screw into the pre-drilled and tapped hole or mating component, ensuring smooth engagement of threads. 3. Tighten the cap screw to the specified torque value using a calibrated torque wrench to achieve optimal clamping force without over-stressing the material.

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)
M14Check CalculatorReduce by 25%

Weight Reference Table

Size / TypeEst. Weight (lbs/100)Shipping Weight (kg)
M14Varies 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 an improperly sized wrench or socket, leading to cam-out and damaged fastener heads.Always use the correct size wrench or socket that fits snugly on the hex head to ensure proper grip and prevent damage.
Over-tightening the cap screw, which can strip threads or deform the mating components.Adhere to the recommended torque specifications for the specific application and materials being joined. Use a calibrated torque wrench for accuracy.
Using a fastener that is not rated for the environmental conditions, leading to premature corrosion.Ensure the 304 stainless steel designation is suitable for the intended environment. For highly corrosive conditions, consider higher-grade stainless steels or specialized coatings.

Common Applications

  • Structural assembly in marine and offshore equipment
  • Industrial machinery and equipment manufacturing
  • Outdoor architectural and construction projects

⚠️ Engineering Warnings

  • Ensure compatibility of mating materials to prevent galvanic corrosion if dissimilar metals are used in conjunction.
  • Always use appropriate personal protective equipment (PPE) such as safety glasses and gloves 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 marine and offshore equipment, Industrial machinery and equipment manufacturing, Outdoor architectural and construction projects.

Technical Schematic

HEX BOLT DIAGRAMSAE J429 / ASME B18.2.1HEXHEADLENGTH = 20mmAF18mm1/2"-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.