Home > U-Bolts > Carbon Steel U-Bolt, 3" Pipe

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

Expert Overview

This heavy-duty carbon steel U-bolt is specifically engineered to securely fasten 3-inch diameter piping systems. Its robust construction ensures reliable support and stability in challenging industrial environments.

StandardISO 9001
MaterialCarbon Steel
FinishPassivated
GradeN/A
Inside Width ( A)2.96"
Inside Length ( B)5.15"
Thread Size1/2"-13

Detailed Engineering Specifications

Purpose-built for heavy-duty applications, this U-bolt provides exceptional structural integrity for securing 3-inch nominal pipe. Constructed from high-strength carbon steel, it offers superior load-bearing capacity and corrosion resistance suitable for demanding industrial environments. The precise inside width of 2.96" ensures a snug fit around standard 3" pipe, while the inside length of 5.15" accommodates various mounting configurations. Featuring a robust 1/2"-13 UNC thread, it integrates seamlessly with standard nuts and washers for a secure, long-lasting connection in critical infrastructure, plumbing, and mechanical systems.

🧊 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.

3MEst. 1902
USA🇺🇸
"Science applied to life."
Market Rank
🏆 Global Innovation Leader
Industry Approvals
🚀 Aviation & Medical Approved
Warranty & Support
🛡️ Premium Performance Guarantee
Green Manufacturing
🌱 100% Renewable Energy HQ
Certified:ISO 9001, ISO 14001
LoctiteEst. 1953
Germany🇩🇪
"Industrial adhesives and sealants."
Market Rank
🏆 #1 Global Adhesives
Industry Approvals
🚀 Formula 1 & Aerospace OEM
Warranty & Support
🛡️ 24/7 Application Support
Green Manufacturing
🌱 Climate Positive 2030
Certified:ISO 9001, IATF 16949
McMaster-CarrEst. 1901
USA🇺🇸
"Complete industrial supply."
Market Rank
🏆 #1 Industrial Supply Standard
Industry Approvals
🚀 US Military Approved
Warranty & Support
🛡️ Lifetime Return Policy
Green Manufacturing
🌱 Sustainable Logistics
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 and through the mounting surface or bracket. 2. Thread the provided nuts onto the U-bolt legs until snug. 3. Tighten the nuts evenly in an alternating pattern to achieve the specified clamping force, ensuring the pipe is securely held without deformation.

Equivalent Standards (Cross-Reference)

Standard SystemDesignation
ISO EquivalentISO 9001:2015 Mfg
DIN EquivalentIndustry Standard
Primary StandardISO 9001

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 nuts, potentially crushing or deforming the pipe.Tighten nuts to the recommended torque specification, using a torque wrench if possible, and ensuring even pressure is applied.
Using the wrong size U-bolt for the pipe diameter, leading to a loose or unstable connection.Verify the pipe's nominal diameter and select a U-bolt with the correct inside width (A) to ensure a secure fit.

Common Applications

  • Pipe support in commercial plumbing systems
  • Securing conduit and electrical raceways
  • Industrial machinery mounting and stabilization

⚠️ Engineering Warnings

  • Ensure all fasteners (nuts and washers) are properly tightened to prevent slippage or failure.
  • Inspect U-bolts regularly for signs of corrosion, wear, or damage, and replace if necessary.

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: Pipe support in commercial plumbing systems, Securing conduit and electrical raceways, Industrial machinery mounting and stabilization.

Technical Schematic

U-BOLT DIMENSIONAL DIAGRAMASME B18.31.5PIPE1"NUTNUTA = 2.96"B5.15"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.