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

Expert Overview

Engineered for demanding environments, this 3" Carbon Steel U-Bolt provides robust support for piping systems. Its durable construction ensures long-term stability and reliable performance in critical industrial applications.

StandardISO 9001
MaterialCarbon Steel
FinishPlain
GradeN/A
Inside Width ( A)1.30"
Inside Length ( B)5.15"
Thread Size1/2"-13

Detailed Engineering Specifications

Purpose-built for heavy-duty applications, this U-bolt is manufactured from high-strength carbon steel, offering exceptional tensile strength and resistance to fatigue under significant load. The internal dimensions of 1.30" (A) and 5.15" (B) are precisely machined to accommodate standard 3" nominal pipe sizes, ensuring a snug and secure fit. Equipped with 1/2"-13 UNC threads, these bolts are designed for use with matching nuts and washers (sold separately) to create a dependable clamping mechanism. This U-bolt is ideal for stationary pipe supports, conduit securing, and structural framing in industries such as oil and gas, chemical processing, and heavy manufacturing.

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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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🏆 Global Innovation Leader
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Certified:ISO 9001, ISO 14001
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 pipe, ensuring the pipe is centered within the U-bolt's curvature. 2. Place the provided or appropriate washers onto the threaded ends of the U-bolt. 3. Thread the matching nuts onto the U-bolt, tightening them evenly and incrementally until the desired clamping force is achieved, as specified by engineering requirements or load calculations. 4. Verify that the pipe is securely held and does not exhibit movement under expected operational loads.

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 incorrect thread size nuts.Always ensure that the nuts used are the correct 1/2"-13 UNC thread size to guarantee a secure and proper fit.
Over-tightening or under-tightening the nuts.Tighten nuts incrementally and evenly to the torque specifications recommended for the application to prevent pipe damage or inadequate support.
Not using washers.Always use appropriate washers under the nuts to distribute the clamping force evenly and prevent thread galling or damage to the support surface.

Common Applications

  • Pipe Support and Securing
  • Conduit and Cable Management
  • Structural Framing and Bracing

⚠️ Engineering Warnings

  • Ensure proper thread engagement when tightening nuts to avoid stripping.
  • Verify material compatibility for corrosive environments; consider galvanized or stainless steel alternatives 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 and Securing, Conduit and Cable Management, Structural Framing and Bracing.

Technical Schematic

U-BOLT DIMENSIONAL DIAGRAMASME B18.31.5PIPE1"NUTNUTA = 1.30"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.