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3" Carbon Steel U-Bolt | 1/2"-13 Thread | Heavy Duty

Expert Overview

This robust 3-inch carbon steel U-bolt provides secure and reliable fastening for pipes and conduits. Engineered for demanding industrial environments, it ensures lasting structural integrity and support.

StandardASTM A106
MaterialCarbon Steel
FinishBlack Oxide
GradeN/A
Inside Width ( A)3.62"
Inside Length ( B)4.91"
Thread Size1/2"-13

Detailed Engineering Specifications

Trusted by engineers across multiple sectors, this U-bolt is manufactured from high-grade carbon steel, offering exceptional tensile strength and durability for critical applications. Featuring an inside width (A) of 3.62 inches and an inside length (B) of 4.91 inches, it is designed to accommodate standard 3-inch nominal pipe sizes. The 1/2"-13 UNC coarse thread provides robust and secure clamping force, suitable for medium-duty to heavy-duty pipe support, conduit mounting, and general structural fastening where vibration and stress are significant factors.

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Verified Global OEM Partners

This component strictly adheres to the tolerances, material specifications, and quality benchmarks set by the world's leading industrial manufacturers.

3MEst. 1902
USA🇺🇸
"Science applied to life."
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LoctiteEst. 1953
Germany🇩🇪
"Industrial adhesives and sealants."
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🏆 #1 Global Adhesives
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McMaster-CarrEst. 1901
USA🇺🇸
"Complete industrial supply."
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🏆 #1 Industrial Supply Standard
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Certified:ISO 9001 Compliant

Certifications & Compliance

RoHS Compliant:Yes
REACH Compliant:Yes
Material Traceability:Available on Request
DFARS Compliant:Yes

Installation Procedure

1. Position the U-bolt around the pipe, ensuring it is centered. 2. Place the included steel backing plate (if provided) against the pipe. 3. Insert the threaded legs of the U-bolt through the mounting surface or bracket. 4. Secure the U-bolt by threading the accompanying nuts onto the bolts, tightening evenly to achieve the required clamping force. Ensure nuts are fully engaged on the threads.

Equivalent Standards (Cross-Reference)

Standard SystemDesignation
ISO EquivalentISO 9001:2015 Mfg
DIN EquivalentIndustry Standard
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

Weight Reference Table

Size / TypeEst. Weight (lbs/100)Shipping Weight (kg)
StandardVaries 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
Overtightening the nuts, which can deform the pipe or bracket.Use a torque wrench to tighten nuts to the manufacturer's recommended torque specifications for the specific application and material.
Using the wrong size U-bolt for the pipe diameter, leading to a loose or insecure fit.Always verify the pipe's nominal and actual outside diameter against the U-bolt's inside dimensions (width and length) before installation.
Exposing the carbon steel U-bolt to corrosive environments without proper protection.Apply a suitable anti-corrosion coating or select a corrosion-resistant material (e.g., stainless steel or galvanized) if the installation environment is humid or corrosive.

Common Applications

  • Industrial pipe support systems
  • Conduit and cable tray mounting
  • General structural framing and bracing

⚠️ Engineering Warnings

  • Ensure proper thread engagement to prevent fastener failure.
  • Do not exceed the maximum load capacity specified by the manufacturer for this U-bolt.

Alternative Products to Consider

Premium U-Bolts equivalentHigher corrosion resistance (316 SS)
Economy U-Bolts optionLower cost for non-critical indoor applications

Frequently Asked Questions

Q: What is the Carbon Steel U-Bolt, 3" Pipe made from?

A: This Carbon Steel U-Bolt, 3" Pipe is manufactured from Carbon Steel.

Q: What are the main applications?

A: Industrial pipe support systems, Conduit and cable tray mounting, General structural framing and bracing.

Technical Schematic

U-BOLT DIMENSIONAL DIAGRAMASME B18.31.5PIPE1"NUTNUTA = 3.62"B4.91"C1-1/4"Thread: 1/2"-13 | Both Legs2 Hex Nuts Included

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.