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M12 x 141mm Carbon Steel Hex Head Cap Screw | Industrial Grade

Expert Overview

Engineered for demanding environments, this M12 x 141mm Hex Head Cap Screw, crafted from high-strength carbon steel, provides superior load-bearing capacity and exceptional durability for critical fastening needs.

StandardISO 9001
MaterialCarbon Steel
FinishPassivated
GradeN/A
SizeM12
Length141mm
Head Width8mm

Detailed Engineering Specifications

A proven choice for industrial professionals, this M12 x 141mm Hex Head Cap Screw is manufactured from high-grade carbon steel, ensuring excellent tensile strength and resistance to shear forces. The M12 designation signifies a nominal major diameter of 12mm, with a precise 141mm length for extended reach in assembly. The 8mm head width (across flats) provides a substantial seating surface for standard tooling, facilitating secure tightening and reliable torque transfer. This material composition offers a cost-effective yet robust solution for a wide array of industrial joining applications, from structural assemblies to machinery maintenance.

🧊 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 M12 tool (e.g., wrench or socket) for the hex head. 2. Thread the cap screw into the mating component, ensuring smooth engagement with the internal threads. 3. Apply torque according to engineering specifications or industry best practices, using a calibrated torque wrench if required for critical applications.

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)
M12Check CalculatorReduce by 25%

Weight Reference Table

Size / TypeEst. Weight (lbs/100)Shipping Weight (kg)
M12Varies 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
Using the wrong size wrench, leading to head stripping.Always use an M12 sized wrench or socket that fits snugly onto the hex head.
Over-tightening, which can lead to thread damage or fastener failure.Adhere to specified torque values or consult engineering drawings for proper tensioning.
Cross-threading, causing damage to both the screw and the receiving thread.Start threading by hand to ensure proper alignment before applying any tool.

Common Applications

  • Heavy machinery assembly
  • Structural steel connections
  • Automotive and aerospace sub-assemblies

⚠️ Engineering Warnings

  • Ensure proper thread engagement to prevent stripping or galling.
  • Always use appropriate personal protective equipment (PPE) 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 connections, Automotive and aerospace sub-assemblies.

Technical Schematic

HEX BOLT DIAGRAMSAE J429 / ASME B18.2.1HEXHEADLENGTH = 141mmAF8mm1/2"-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.