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

3" Carbon Steel U-Bolt | 3.68" Width | 5.19" Length

Expert Overview

Engineered for robust pipe securing, this 3" carbon steel U-bolt provides exceptional strength and durability. Its precise dimensions ensure a reliable, high-capacity connection in demanding environments.

StandardDIN 933
MaterialCarbon Steel
FinishPassivated
GradeN/A
Inside Width ( A)3.68"
Inside Length ( B)5.19"
Thread Size1/2"-13

Detailed Engineering Specifications

Purpose-built for heavy-duty applications, this carbon steel U-bolt is designed to securely fasten 3-inch nominal pipes. Featuring an inside width (A) of 3.68 inches and an inside length (B) of 5.19 inches, it accommodates standard pipe dimensions with ample clearance. The robust 1/2"-13 UNC thread size ensures a strong mechanical bond when paired with appropriate nuts and washers (sold separately). Manufactured from high-grade carbon steel, it offers superior tensile strength and resistance to deformation under significant load, making it ideal for industrial plumbing, structural support, and conduit mounting where reliability is paramount.

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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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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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🛡️ 24/7 Application Support
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🌱 Climate Positive 2030
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 it spans the desired support area. 2. Place the pipe and U-bolt onto the mounting surface or bracket. 3. Secure the U-bolt by threading nuts onto the bolt ends, tightening evenly on both sides to achieve the required clamping force.

Equivalent Standards (Cross-Reference)

Standard SystemDesignation
ISO EquivalentISO 9001:2015 Mfg
DIN EquivalentIndustry Standard
Primary StandardDIN 933

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 undersized U-bolts for the pipe diameter.Always select a U-bolt with an inside width that accommodates the pipe's outer diameter plus sufficient clearance for coatings or insulation, and an inside length appropriate for the support structure.
Uneven tightening of nuts.Tighten nuts incrementally and alternately on each leg of the U-bolt to ensure uniform pressure distribution and prevent pipe distortion or stress.

Common Applications

  • Industrial pipe support systems
  • Structural conduit and cable tray mounting
  • Heavy-duty plumbing and mechanical installations

⚠️ Engineering Warnings

  • Ensure nuts and washers are of compatible thread size and material for optimal performance and corrosion resistance.
  • Do not exceed the recommended load capacity for this U-bolt; consult engineering specifications for tensile strength and shear load limits.

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 systems, Structural conduit and cable tray mounting, Heavy-duty plumbing and mechanical installations.

Technical Schematic

U-BOLT DIMENSIONAL DIAGRAMASME B18.31.5PIPE1"NUTNUTA = 3.68"B5.19"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.