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M5x40mm Carbon Steel Hex Cap Screw | Reliable Fastening

Expert Overview

This M5x40mm Hex Head Cap Screw, crafted from high-grade carbon steel, offers superior tensile strength and durability for critical fastening applications. Its robust head design ensures secure torque transfer.

StandardISO 9001
MaterialCarbon Steel
FinishBlack Oxide
GradeN/A
SizeM5
Length40mm
Head Width26mm

Detailed Engineering Specifications

Engineered for reliability and performance, this M5x40mm Hex Head Cap Screw is constructed from high-strength carbon steel, providing excellent load-bearing capacity and resistance to deformation. The M5 thread size ensures compatibility with standard tapped holes and nuts, while the 40mm length allows for versatile application in various assembly scenarios. The substantial 26mm head width, coupled with the hex drive, facilitates efficient installation and removal using standard tooling, ensuring secure and consistent joint integrity across demanding industrial environments.

🧊 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 drive tool (e.g., socket wrench) matching the M5 hex head. 2. Align the screw with the pre-drilled or tapped hole. 3. Hand-tighten the screw initially to engage the threads, ensuring no cross-threading. 4. Use the drive tool to tighten the screw to the recommended torque specification for the material and application.

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)
M5Check CalculatorReduce by 25%

Weight Reference Table

Size / TypeEst. Weight (lbs/100)Shipping Weight (kg)
M5Varies 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
Cross-threading the screw during initial engagement.Ensure the screw is perfectly aligned with the hole before applying rotational force. Turn the screw a few times by hand to confirm smooth thread engagement.
Over-tightening the screw, leading to thread stripping or fastener failure.Utilize a torque wrench to tighten the screw to the manufacturer's recommended torque value for the specific application and materials being joined.

Common Applications

  • Machinery assembly and repair
  • Structural bracing and frameworks
  • Equipment mounting and fastening

⚠️ Engineering Warnings

  • Always wear appropriate safety glasses during installation.
  • Ensure the mating threads are clean and free of debris for optimal performance.

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: Machinery assembly and repair, Structural bracing and frameworks, Equipment mounting and fastening.

Technical Schematic

HEX BOLT DIAGRAMSAE J429 / ASME B18.2.1HEXHEADLENGTH = 40mmAF26mm1/2"-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.