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

3" Carbon Steel U-Bolt | 1/2"-13 Thread | 4.28" Width

Expert Overview

Engineered for robust pipe support, this 3" Carbon Steel U-Bolt features a 4.28" inside width and 4.66" inside length with 1/2"-13 threads. It provides secure and reliable clamping for various industrial piping systems.

StandardASME B18
MaterialCarbon Steel
FinishPassivated
GradeN/A
Inside Width ( A)4.28"
Inside Length ( B)4.66"
Thread Size1/2"-13

Detailed Engineering Specifications

Trusted by engineers across multiple sectors, this U-bolt is manufactured from high-grade carbon steel, ensuring exceptional tensile strength and durability for demanding applications. Its precise dimensions, with an inside width (A) of 4.28" and an inside length (B) of 4.66", are designed for a snug fit on 3" nominal pipe sizes. The 1/2"-13 UNC thread size offers ample clamping force and compatibility with standard hardware, making it ideal for structural support, conduit mounting, and general pipe hanging where vibration resistance and load-bearing capacity are critical.

🧊 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 3" pipe, ensuring it rests evenly on the pipe's exterior. 2. Place the provided plate (if applicable) over the threaded ends and thread on the nuts finger-tight. 3. Tighten the nuts evenly using a calibrated torque wrench to the manufacturer's recommended specification, ensuring consistent pressure distribution and a secure installation.

Equivalent Standards (Cross-Reference)

Standard SystemDesignation
ISO EquivalentISO 9001:2015 Mfg
DIN EquivalentIndustry Standard
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

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 the U-bolt.Utilize a calibrated torque wrench and adhere to the recommended torque specifications for the U-bolt size and application.
Using the wrong size U-bolt for the pipe, leading to a loose or overly constrictive fit.Always verify the pipe's nominal size and select a U-bolt with appropriate inside dimensions (width and length) to match.

Common Applications

  • Industrial pipe support and mounting
  • Conduit and cable tray securing
  • Structural bracing in mechanical systems

⚠️ Engineering Warnings

  • Ensure proper thread engagement to prevent stripping or fastener failure.
  • Use appropriate corrosion-resistant coatings if the application involves harsh environments.

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 and mounting, Conduit and cable tray securing, Structural bracing in mechanical systems.

Technical Schematic

U-BOLT DIMENSIONAL DIAGRAMASME B18.31.5PIPE1"NUTNUTA = 4.28"B4.66"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.