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M10 x 78mm Carbon Steel Hex Cap Screw

Expert Overview

This robust M10 x 78mm Hex Head Cap Screw, crafted from high-strength carbon steel, offers exceptional durability and reliable fastening for demanding industrial applications. Its precisely engineered head ensures secure torque application.

StandardASME B18
MaterialCarbon Steel
FinishGalvanized
GradeN/A
SizeM10
Length78mm
Head Width36mm

Detailed Engineering Specifications

Engineered for reliability and performance, this M10 x 78mm Hex Head Cap Screw is manufactured from high-grade carbon steel, providing superior tensile strength and resistance to deformation under significant load. The M10 metric thread ensures compatibility with standard tapped holes and nuts, while the 78mm length offers ample grip for joining components. Its substantial 36mm hexagonal head is designed for optimal wrench engagement, facilitating efficient assembly and disassembly. This robust construction makes it suitable for structural assemblies, machinery, and construction where consistent performance and longevity are 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 size (36mm) for the hex head. 2. Align the screw with the pre-drilled and tapped hole or nut. 3. Thread the screw in by hand initially to prevent cross-threading. 4. Tighten the screw to the specified torque using a calibrated torque wrench.

Equivalent Standards (Cross-Reference)

Standard SystemDesignation
ISO EquivalentISO 898-1 / ISO 4014
DIN EquivalentDIN 931 / DIN 933
Primary StandardASME B18

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)
M10Check CalculatorReduce by 25%

Weight Reference Table

Size / TypeEst. Weight (lbs/100)Shipping Weight (kg)
M10Varies 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 incorrect wrench size, leading to cam-out and potential damage to the fastener head.Always use a wrench that precisely fits the 36mm hex head to ensure proper engagement and prevent stripping.
Over-tightening the screw, which can lead to thread damage or material fatigue.Adhere to the recommended torque specifications for the material and application to ensure joint integrity without overstressing the fastener.
Cross-threading the screw during initial engagement.Start threading by hand to ensure proper alignment before applying any torque. If resistance is felt, back out and re-align.

Common Applications

  • Heavy machinery assembly
  • Structural steel connections
  • Automotive and aerospace components
  • Industrial equipment manufacturing

⚠️ Engineering Warnings

  • Ensure threads are clean and free of debris before installation.
  • 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 connections, Automotive and aerospace components, Industrial equipment manufacturing.

Technical Schematic

HEX BOLT DIAGRAMSAE J429 / ASME B18.2.1HEXHEADLENGTH = 78mmAF36mm1/2"-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.