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3" Carbon Steel U-Bolt | 4.03" Width | 7.77" Length | 1/2"-13 Thread

Expert Overview

This robust 3" Carbon Steel U-Bolt is engineered for secure pipe support. With a 4.03" inside width and 7.77" inside length, it provides a reliable mounting solution for industrial piping systems requiring substantial load-bearing capacity.

StandardISO 9001
MaterialCarbon Steel
FinishPassivated
GradeN/A
Inside Width ( A)4.03"
Inside Length ( B)7.77"
Thread Size1/2"-13

Detailed Engineering Specifications

Precision-manufactured to tight tolerances, this Carbon Steel U-Bolt ensures a secure and stable fit for 3" nominal pipe sizes. It features an inside width (A) of 4.03 inches and an inside length (B) of 7.77 inches, accommodating a wide range of pipe and conduit configurations. The 1/2"-13 UNC coarse thread size provides ample engagement for the included nuts, ensuring high tensile strength and resistance to vibration and loosening. Constructed from high-grade carbon steel, it offers excellent mechanical properties, including a high yield strength and tensile strength, making it suitable for demanding environments and static load applications.

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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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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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🌱 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, ensuring it straddles the supporting structure. 2. Thread the nuts onto the U-bolt legs, initially by hand to engage all threads. 3. Tighten the nuts progressively and evenly using appropriate wrenches to achieve secure clamping without over-stressing the pipe or support.

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
Using a U-bolt with an incorrect inside width for the pipe size.Always verify the U-bolt's inside width (A) matches or slightly exceeds the outer diameter of the pipe for a snug and secure fit.
Over-tightening the nuts, which can deform the pipe or crack the supporting material.Tighten nuts until they are snug and the U-bolt firmly grips the pipe, but avoid excessive force that could cause damage.

Common Applications

  • Pipe and conduit support in commercial and industrial plumbing
  • Mounting of electrical conduit and cable trays
  • Structural support for various mechanical systems

⚠️ Engineering Warnings

  • Ensure the supporting structure is rated to handle the combined weight of the pipe, its contents, and the U-bolt assembly.
  • For corrosive environments, consider a coated or stainless steel alternative to prevent premature degradation.

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 and conduit support in commercial and industrial plumbing, Mounting of electrical conduit and cable trays, Structural support for various mechanical systems.

Technical Schematic

U-BOLT DIMENSIONAL DIAGRAMASME B18.31.5PIPE1"NUTNUTA = 4.03"B7.77"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.