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M5 x 77mm Carbon Steel Hex Cap Screw | Industrial Grade

Expert Overview

Engineered for superior performance, this M5 x 77mm Hex Head Cap Screw is manufactured from high-grade carbon steel. It offers exceptional tensile strength and durability for critical industrial applications.

StandardASTM A106
MaterialCarbon Steel
FinishPassivated
GradeN/A
SizeM5
Length77mm
Head Width22mm

Detailed Engineering Specifications

Designed for demanding industrial environments, this M5 x 77mm Hex Head Cap Screw features a robust carbon steel construction, providing excellent tensile and shear strength for secure connections. The metric M5 thread ensures precise engagement with tapped holes or nuts, while the 77mm length facilitates assembly in varied joint thicknesses. With a substantial 22mm head width, it distributes load effectively and allows for high torque application with standard hex drivers. Its inherent material properties make it resistant to deformation under stress, ensuring long-term structural integrity in machinery, equipment, and structural frameworks.

🧊 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 hex driver for the 22mm head width. 2. Ensure mating threads are clean and free of debris. 3. Thread the M5 x 77mm cap screw into the designated M5 tapped hole or through the assembly until snug, then tighten to the required torque specification.

Equivalent Standards (Cross-Reference)

Standard SystemDesignation
ISO EquivalentISO 898-1 / ISO 4014
DIN EquivalentDIN 931 / DIN 933
Primary StandardASTM A106

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
Over-tightening the screw, leading to thread stripping or material fatigue.Adhere to recommended torque values for M5 fasteners and the specific materials being joined.
Using an incorrect size or worn hex driver, resulting in cam-out and head damage.Utilize a properly sized, high-quality hex driver that fits snugly into the screw head.

Common Applications

  • Machinery and equipment assembly
  • Structural framework construction
  • General industrial fastening

⚠️ Engineering Warnings

  • Always use appropriate personal protective equipment (PPE) during installation.
  • Ensure compatibility of materials being joined to prevent galvanic corrosion or premature failure.

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 and equipment assembly, Structural framework construction, General industrial fastening.

Technical Schematic

HEX BOLT DIAGRAMSAE J429 / ASME B18.2.1HEXHEADLENGTH = 77mmAF22mm1/2"-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.