Home > Fastening & Joining > Hex Head Cap Screw, Carbon Steel

M16 x 65mm Carbon Steel Hex Cap Screw | Fastening Solutions

Expert Overview

This M16 x 65mm Hex Head Cap Screw, crafted from robust carbon steel, offers superior tensile strength for critical structural and mechanical assemblies. Engineered for demanding industrial environments.

StandardISO 9001
MaterialCarbon Steel
FinishBlack Oxide
GradeN/A
SizeM16
Length65mm
Head Width18mm

Detailed Engineering Specifications

A high-performance industrial component, this M16 x 65mm Hex Head Cap Screw is manufactured from high-grade carbon steel, providing exceptional tensile strength and durability. The 18mm head width ensures ample bearing surface for secure torque application. Designed to meet stringent industrial standards, it is ideal for load-bearing applications, machinery construction, and infrastructure projects where reliability and sustained performance are paramount. The material's inherent toughness resists deformation under stress, ensuring long-term fastener integrity.

🧊 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. Clean mating surfaces and threaded holes to remove debris and ensure proper engagement. 2. Apply appropriate lubricant or anti-seize compound to threads as per application requirements. 3. Insert the cap screw and engage threads by hand for at least two full turns to prevent cross-threading. 4. Tighten the cap screw to the specified torque value using a calibrated torque wrench, ensuring the head is seated firmly against the surface.

Equivalent Standards (Cross-Reference)

Standard SystemDesignation
ISO EquivalentISO 898-1 / ISO 4014
DIN EquivalentDIN 931 / DIN 933
Primary StandardISO 9001

Mechanical Properties

Tensile StrengthStandard Commercial Spec
Yield StrengthStandard Commercial Spec
HardnessVaries by specific batch

Chemical Composition

Carbon (C)0.28 - 0.55%
Manganese (Mn)0.60 - 0.90%
Phosphorus (P)0.04% max
Sulfur (S)0.05% max

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
Over-tightening the screw, leading to thread stripping or bolt fracture.Always use a calibrated torque wrench and adhere to recommended torque specifications for the bolt size and material.
Using the wrong tool size, which can damage the hex head and compromise torque application.Ensure the correct size hex socket or wrench is used to match the 18mm head width precisely.
Not cleaning threads on both the screw and the mating component, causing premature wear and reduced clamping force.Thoroughly clean all threads before assembly to ensure smooth engagement and maximum fastener efficiency.

Common Applications

  • Heavy Machinery Assembly
  • Structural Steel Construction
  • Automotive and Aerospace Manufacturing

⚠️ Engineering Warnings

  • Ensure proper thread engagement to prevent damage and ensure secure fastening.
  • Always use appropriate safety equipment, including eye protection, 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, Carbon Steel made from?

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

Q: What are the main applications?

A: Heavy Machinery Assembly, Structural Steel Construction, Automotive and Aerospace Manufacturing.

Technical Schematic

HEX BOLT DIAGRAMSAE J429 / ASME B18.2.1HEXHEADLENGTH = 65mmAF18mm1/2"-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.