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

M15 x 29mm Carbon Steel Hex Cap Screw

Expert Overview

This M15 x 29mm hex head cap screw, crafted from robust carbon steel, offers exceptional clamping force and durability for heavy-duty industrial assemblies requiring reliable, high-strength fastening.

StandardDIN 933
MaterialCarbon Steel
FinishZinc Plated
GradeN/A
SizeM15
Length29mm
Head Width23mm

Detailed Engineering Specifications

Precision-manufactured to tight tolerances, this M15 x 29mm carbon steel hex head cap screw features a nominal diameter of 15mm and a shank length of 29mm. The head measures 23mm across flats, providing ample surface area for torque application via a standard wrench or socket. Constructed from high-grade carbon steel, it exhibits excellent tensile strength and shear resistance, making it suitable for load-bearing applications. Its robust design ensures secure and stable connections in demanding environments, resisting vibration and shock loads effectively.

🧊 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 (23mm) for the hex head. 2. Ensure the mating threads are clean and free of debris. 3. Thread the cap screw into the pre-tapped hole or nut, applying consistent torque as specified by design requirements.

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)
M15Check CalculatorReduce by 25%

Weight Reference Table

Size / TypeEst. Weight (lbs/100)Shipping Weight (kg)
M15Varies by dimensionContact Sales

Corrosion Resistance Guide

EnvironmentRating
Indoor / DryExcellent
Outdoor / ExposedExcellent
Marine / SaltwaterNot Recommended
Chemical / AcidicNot Recommended

Common Mistakes & How to Avoid Them

❌ Mistake✅ Correct Approach
Using an undersized or oversized wrench, leading to head damage or improper torque application.Always use a wrench or socket precisely matching the 23mm head width for optimal grip and torque transfer.
Cross-threading the screw, causing damage to both the screw and the mating threads.Start threading the screw by hand to ensure it engages properly before applying any tools.

Common Applications

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

⚠️ Engineering Warnings

  • Ensure proper torque is applied to avoid over-tightening, which can strip threads or fracture the screw.
  • Use in environments within the material's rated temperature and corrosion resistance limits 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: Heavy machinery assembly, Structural steel connections, Automotive and aerospace sub-assemblies.

Technical Schematic

HEX BOLT DIAGRAMSAE J429 / ASME B18.2.1HEXHEADLENGTH = 29mmAF23mm1/2"-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.