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M18x78mm Nylon Hex Head Cap Screw | Corrosion Resistant Fastener

Expert Overview

Engineered for robust performance, this M18x78mm Nylon Hex Head Cap Screw provides exceptional corrosion resistance and dielectric strength. Its durable nylon construction ensures reliable fastening in challenging industrial settings.

StandardDIN 933
MaterialNylon
FinishPlain
GradeN/A
SizeM18
Length78mm
Head Width22mm

Detailed Engineering Specifications

Purpose-built for heavy-duty applications, this M18x78mm Nylon Hex Head Cap Screw features a nominal diameter of M18 and a grip length of 78mm. The hex head measures 22mm across flats, allowing for secure engagement with standard tooling. Constructed from high-performance nylon, it exhibits superior resistance to a broad spectrum of chemicals, solvents, and moisture, making it ideal for corrosive environments. Its inherent non-conductive properties also make it suitable for electrical insulation applications where preventing current flow is critical. The material's toughness and fatigue resistance ensure long-term structural integrity under significant load.

🧊 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 the mating threads are clean and free from debris. 2. Hand-thread the cap screw into the receiving component to verify alignment and avoid cross-threading. 3. Use an appropriately sized wrench or socket to tighten the cap screw to the required torque specification for nylon fasteners, avoiding over-tightening.

Equivalent Standards (Cross-Reference)

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

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)
M18Check CalculatorReduce by 25%

Weight Reference Table

Size / TypeEst. Weight (lbs/100)Shipping Weight (kg)
M18Varies by dimensionContact Sales

Corrosion Resistance Guide

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

Common Mistakes & How to Avoid Them

❌ Mistake✅ Correct Approach
Over-tightening nylon fasteners.Use a torque wrench calibrated for plastic fasteners and adhere to recommended torque values to prevent stripping or material deformation.
Using steel fasteners in corrosive environments.Select nylon fasteners for applications exposed to chemicals, moisture, or saltwater where corrosion is a concern.

Common Applications

  • Chemical Processing Equipment
  • Electrical Enclosure Assembly
  • Marine Hardware
  • Water Treatment Systems
  • Food Processing Machinery

⚠️ Engineering Warnings

  • Nylon fasteners have lower tensile strength and stiffness compared to metallic fasteners; ensure suitability for the intended load requirements.
  • Avoid prolonged exposure to UV radiation, which can degrade nylon over time. Consider UV-resistant grades if necessary.

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: Chemical Processing Equipment, Electrical Enclosure Assembly, Marine Hardware, Water Treatment Systems, Food Processing Machinery.

Technical Schematic

HEX BOLT DIAGRAMSAE J429 / ASME B18.2.1HEXHEADLENGTH = 78mmAF22mm1/2"-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.