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M16 x 18mm Polycarbonate Hex Head Cap Screw

Expert Overview

This M16 x 18mm Hex Head Cap Screw, crafted from high-impact polycarbonate, offers superior chemical resistance and electrical insulation for critical fastening needs.

StandardASME B18
MaterialPolycarbonate
FinishBlack Oxide
GradeN/A
SizeM16
Length18mm
Head Width16mm

Detailed Engineering Specifications

Precision-manufactured to tight tolerances, this M16 x 18mm Hex Head Cap Screw features a nominal diameter of M16 and a length of 18mm, with a head width of 16mm. Constructed from robust polycarbonate, it exhibits excellent tensile strength, superior impact resistance, and a high degree of chemical inertness, making it ideal for environments where corrosion or electrical conductivity are concerns. The material's inherent dielectric properties ensure safe operation in electrical assemblies. Its lightweight nature also contributes to reduced overall assembly weight without compromising structural integrity for its intended load ratings.

🧊 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. Select the appropriate M16 mating thread or hole. 2. Insert the Hex Head Cap Screw, ensuring proper alignment. 3. Tighten using a standard M16 hex driver until snug, avoiding overtightening which can damage the polycarbonate threads.

Equivalent Standards (Cross-Reference)

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

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)
M16Check CalculatorReduce by 25%

Weight Reference Table

Size / TypeEst. Weight (lbs/100)Shipping Weight (kg)
M16Varies 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
Overtightening the polycarbonate screw, leading to thread stripping or head fracture.Use a torque wrench and adhere to recommended torque values for polycarbonate fasteners, or tighten until snug without excessive force.
Using in applications exceeding polycarbonate's temperature or load-bearing limits.Consult the material's technical data sheet for specific temperature and load ratings before deployment.

Common Applications

  • Electrical enclosures and equipment mounting
  • Medical device assembly
  • Corrosive chemical processing environments
  • Lightweight structural components

⚠️ Engineering Warnings

  • Not recommended for high-stress or load-bearing structural applications where metallic fasteners are standard.
  • Avoid exposure to solvents that may degrade polycarbonate.

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, Polycarbonate made from?

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

Q: What are the main applications?

A: Electrical enclosures and equipment mounting, Medical device assembly, Corrosive chemical processing environments, Lightweight structural components.

Technical Schematic

HEX BOLT DIAGRAMSAE J429 / ASME B18.2.1HEXHEADLENGTH = 18mmAF16mm1/2"-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.