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

M23 x 131mm Carbon Steel Hex Head Cap Screw

Expert Overview

This M23 x 131mm Hex Head Cap Screw, crafted from robust carbon steel, offers superior strength and durability. Designed for critical fastening applications requiring high tensile strength and secure connections.

StandardDIN 933
MaterialCarbon Steel
FinishPlain
GradeN/A
SizeM23
Length131mm
Head Width7mm

Detailed Engineering Specifications

Engineered for reliability and performance, this M23 x 131mm hex head cap screw is manufactured from high-grade carbon steel, providing exceptional tensile strength and resistance to shear forces. The M23 diameter and 131mm length ensure suitability for substantial structural connections and heavy-duty machinery. Its precisely formed hex head, with a nominal width of 7mm, allows for efficient torque application using standard wrenches or sockets, facilitating secure and repeatable assembly. The inherent properties of carbon steel offer a balance of strength and cost-effectiveness, making it an ideal choice for a wide range of industrial environments where robust fastening is paramount.

🧊 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 wrench or socket size for the M23 hex head. 2. Align the screw with the pre-tapped hole or nut. 3. Engage the screw threads and turn clockwise to tighten, applying consistent torque. 4. Ensure the screw is seated firmly and the joint is secure.

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

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)
M23Check CalculatorReduce by 25%

Weight Reference Table

Size / TypeEst. Weight (lbs/100)Shipping Weight (kg)
M23Varies 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 an incorrect size wrench or socket, leading to head stripping.Always use the correctly sized wrench or socket that fits snugly onto the hex head.
Over-tightening the screw, which can damage the threads or the workpiece.Follow recommended torque specifications or tighten until snug and the joint is secure, avoiding excessive force.
Cross-threading the screw, resulting in damaged threads on both the screw and the mating component.Ensure the screw is started straight and hand-tightened for the first few turns to confirm proper thread engagement before applying torque.

Common Applications

  • Heavy Machinery Assembly
  • Structural Steel Connections
  • Industrial Equipment Mounting

⚠️ Engineering Warnings

  • Ensure the carbon steel material is suitable for the operating environment, considering potential corrosion.
  • Always wear appropriate personal protective equipment (PPE) during installation and handling.

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, Industrial Equipment Mounting.

Technical Schematic

HEX BOLT DIAGRAMSAE J429 / ASME B18.2.1HEXHEADLENGTH = 131mmAF7mm1/2"-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.