Home > Fastening & Joining > Hex Head Cap Screw, Nylon

M21 x 35mm Nylon Hex Head Cap Screw

Expert Overview

Engineered for reliability, this M21 x 35mm Nylon Hex Head Cap Screw offers exceptional corrosion resistance and dielectric properties. Its robust design ensures secure fastening in diverse environments.

StandardASTM A106
MaterialNylon
FinishGalvanized
GradeN/A
SizeM21
Length35mm
Head Width29mm

Detailed Engineering Specifications

Trusted by engineers across multiple sectors, this M21 x 35mm Nylon Hex Head Cap Screw features a substantial 29mm head width, providing ample torque transfer for secure assembly. Manufactured from high-grade nylon, it exhibits superior chemical resistance, non-conductivity, and a lightweight profile, making it ideal for environments where galvanic corrosion is a concern or electrical insulation is required. Its precise dimensions ensure consistent performance in demanding 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:N/A

Installation Procedure

1. Ensure mating threads are clean and free of debris. 2. Hand-thread the cap screw to initiate engagement, confirming proper alignment. 3. Tighten using an appropriate wrench or socket to the recommended torque specification, 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 StrengthStandard Commercial Spec
Yield StrengthStandard Commercial Spec
HardnessVaries by specific batch

Temperature & Environment Rating

Min Operating Temp
-20°F (-29°C)
Max Continuous Temp
400°F (204°C)
Thermal Expansion
Typical for Material Class

Recommended Torque Values

Bolt SizeDry Torque (ft-lbs)Lubricated Torque (ft-lbs)
M21Check CalculatorReduce by 25%

Weight Reference Table

Size / TypeEst. Weight (lbs/100)Shipping Weight (kg)
M21Varies by dimensionContact Sales

Corrosion Resistance Guide

EnvironmentRating
Indoor / DryExcellent
Outdoor / ExposedExcellent
Marine / SaltwaterNot Recommended
Chemical / AcidicNot Recommended

Common Mistakes & How to Avoid Them

❌ Mistake✅ Correct Approach
Over-tightening the nylon screw, leading to thread stripping or head deformation.Utilize a torque wrench and adhere to manufacturer-specified torque values for nylon fasteners.
Using the wrong tool size, which can damage the hex head and compromise tightening.Always use a correctly sized hex socket or wrench to match the 29mm head width for optimal engagement.

Common Applications

  • Electrical enclosures and equipment mounting
  • Corrosion-prone chemical processing environments
  • Lightweight structural assemblies in automotive and aerospace

⚠️ Engineering Warnings

  • Nylon fasteners have lower tensile strength and temperature resistance compared to metallic fasteners. Verify suitability for the application's load and environmental conditions.
  • Avoid exposure to strong solvents or UV radiation for prolonged periods, as this may degrade the nylon material.

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, Nylon made from?

A: This Hex Head Cap Screw, Nylon is manufactured from Nylon.

Q: What are the main applications?

A: Electrical enclosures and equipment mounting, Corrosion-prone chemical processing environments, Lightweight structural assemblies in automotive and aerospace.

Technical Schematic

HEX BOLT DIAGRAMSAE J429 / ASME B18.2.1HEXHEADLENGTH = 35mmAF29mm1/2"-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.