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M7 x 49mm Hex Cap Screw | Carbon Steel | Fastening & Joining

Expert Overview

This M7 x 49mm Hex Head Cap Screw, crafted from high-strength carbon steel, is designed for reliable and secure fastening in a wide array of industrial applications.

StandardASTM A106
MaterialCarbon Steel
FinishPassivated
GradeN/A
SizeM7
Length49mm
Head Width34mm

Detailed Engineering Specifications

Built to exacting engineering tolerances, this M7 x 49mm hex head cap screw features a nominal diameter of M7 and a substantial length of 49mm, ensuring robust engagement. The metric thread profile is precisely manufactured for optimal load bearing. Its head width is engineered at 34mm, providing ample surface area for torque application with standard hex drivers. Composed of high-grade carbon steel, it offers excellent tensile strength and durability, making it suitable for applications requiring significant structural integrity under mechanical stress. This fastener is ideal for machinery assembly, structural frameworks, and equipment mounting where reliable performance 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 size and type of hex wrench or socket. 2. Insert the cap screw into the pre-drilled and tapped hole or through the mating components. 3. Tighten the cap screw to the recommended torque specification using the hex wrench, ensuring a secure and stable connection.

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)
M7Check CalculatorReduce by 25%

Weight Reference Table

Size / TypeEst. Weight (lbs/100)Shipping Weight (kg)
M7Varies 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 undersized or oversized hex wrench, leading to stripped heads or inadequate torque application.Always use the correct size hex wrench or socket that fits snugly to prevent damage and ensure proper tightening.
Over-tightening the screw, which can lead to thread stripping, fastener breakage, or damage to the mating material.Adhere to the manufacturer's recommended torque specifications for the specific application and material to avoid overstressing the fastener.

Common Applications

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

⚠️ Engineering Warnings

  • Ensure threads are clean and free of debris before installation to prevent galling or cross-threading.
  • Apply appropriate thread locking compound if vibration is a significant factor in the application to maintain torque.

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 = 49mmAF34mm1/2"-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.