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

3" Carbon Steel U-Bolt | 1/2"-13 Threads | Industrial Grade

Expert Overview

This robust carbon steel U-bolt is engineered for secure and reliable fastening of 3-inch pipes. Featuring precise dimensions and a durable construction, it ensures long-lasting performance in demanding industrial environments.

StandardASME B18
MaterialCarbon Steel
FinishBlack Oxide
GradeN/A
Inside Width ( A)3.54"
Inside Length ( B)2.18"
Thread Size1/2"-13

Detailed Engineering Specifications

Precision-manufactured to tight tolerances, this 3" pipe U-bolt is constructed from high-grade carbon steel, offering excellent tensile strength and corrosion resistance for demanding industrial applications. The inside width (A) measures 3.54 inches, accommodating standard 3-inch nominal pipe sizes, while the inside length (B) is 2.18 inches, providing ample clamping surface. Equipped with robust 1/2"-13 threads, it ensures a secure and dependable connection when paired with appropriate nuts and washers. This specification guarantees consistent performance and structural integrity under significant load.

🧊 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 even contact with the pipe surface. 2. Insert the threaded legs through the mounting surface or bracket, followed by washers and nuts. 3. Tighten nuts uniformly to the recommended torque specification, ensuring a secure and stable fit without over-compression.

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
Using the wrong size U-bolt for the pipe diameter.Always verify the nominal pipe size and select a U-bolt with compatible inside dimensions (A).
Over-tightening the nuts, which can deform the pipe or bracket.Refer to torque charts for the specific application and material, or use a torque wrench for accurate tightening.

Common Applications

  • Pipe support and anchoring in commercial plumbing systems
  • Structural support for conduit and electrical raceways
  • Securing machinery and equipment components

⚠️ Engineering Warnings

  • Ensure all hardware (nuts and washers) is compatible with carbon steel to prevent galvanic corrosion.
  • Always use appropriate safety equipment during installation, including gloves and eye protection.

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 and anchoring in commercial plumbing systems, Structural support for conduit and electrical raceways, Securing machinery and equipment components.

Technical Schematic

U-BOLT DIMENSIONAL DIAGRAMASME B18.31.5PIPE1"NUTNUTA = 3.54"B2.18"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.