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

3" Carbon Steel U-Bolt | 4.40" Width | 3.74" Length | 1/2"-13 Thread

Expert Overview

This heavy-duty carbon steel U-bolt is engineered for secure and reliable support of 3-inch diameter piping. Featuring precise dimensions and robust construction, it ensures stable mounting in high-stress industrial applications.

StandardASME B18
MaterialCarbon Steel
FinishPlain
GradeN/A
Inside Width ( A)4.40"
Inside Length ( B)3.74"
Thread Size1/2"-13

Detailed Engineering Specifications

Designed for demanding industrial environments, this 3" pipe U-bolt is manufactured from high-strength carbon steel, offering exceptional durability and corrosion resistance for long-term performance. The inside width (A) is precisely machined to 4.40 inches, accommodating standard 3-inch pipe dimensions with adequate clearance. The inside length (B) measures 3.74 inches, providing substantial thread engagement for secure fastening. Equipped with a robust 1/2"-13 UNC thread size, this U-bolt ensures a strong and reliable connection when paired with appropriate nuts and washers, critical for preventing pipe movement and ensuring system integrity in applications such as petrochemical, manufacturing, and structural support.

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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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🚀 Formula 1 & Aerospace OEM
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Certified:ISO 9001, IATF 16949
McMaster-CarrEst. 1901
USA🇺🇸
"Complete industrial supply."
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🏆 #1 Industrial Supply Standard
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🚀 US Military Approved
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🛡️ 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 is centered and properly aligned with the mounting surface. 2. Thread the corresponding nuts onto the U-bolt's threaded legs until snug, applying even pressure. 3. Fully tighten the nuts to the recommended torque specification for the chosen mounting hardware to ensure secure pipe support.

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 U-bolt size for the pipe diameter, leading to loose or overly tight fits.Always verify the pipe's outside diameter and select a U-bolt with an inside width that allows for a secure, but not constricting, fit.
Insufficient tightening of the U-bolt nuts, resulting in pipe movement or vibration damage.Tighten U-bolt nuts to the manufacturer's recommended torque specifications, utilizing a calibrated torque wrench.

Common Applications

  • Industrial pipe support and hanging systems
  • Structural mounting of conduit and tubing
  • Mechanical equipment and machinery anchoring

⚠️ Engineering Warnings

  • Ensure all mounting hardware (nuts, washers) is compatible with the U-bolt material and thread size.
  • Do not exceed the load-bearing capacity of the U-bolt or its mounting system.

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 hanging systems, Structural mounting of conduit and tubing, Mechanical equipment and machinery anchoring.

Technical Schematic

U-BOLT DIMENSIONAL DIAGRAMASME B18.31.5PIPE1"NUTNUTA = 4.40"B3.74"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.