Home > U-Bolts > Carbon Steel U-Bolt, 4" Pipe

4" Carbon Steel U-Bolt | 1.75" Wide x 3.88" Long | Pipe Support

Expert Overview

Engineered for dependable pipe support, this 4" carbon steel U-bolt features a 1.75" inside width and 3.88" inside length. Ideal for securing pipelines in demanding industrial environments.

StandardASTM A106
MaterialCarbon Steel
FinishGalvanized
GradeN/A
Inside Width ( A)1.75"
Inside Length ( B)3.88"
Thread Size1/2"-13

Detailed Engineering Specifications

Precision-manufactured to tight tolerances, this carbon steel U-bolt is designed for robust and reliable pipe attachment. It offers an internal width of 1.75 inches (A) and an internal length of 3.88 inches (B), perfectly accommodating 4-inch nominal pipe sizes. Constructed from high-strength carbon steel, it provides excellent load-bearing capacity and corrosion resistance in typical atmospheric conditions. The 1/2"-13 UNC thread size ensures compatibility with standard nuts and washers for secure fastening. This U-bolt is ideal for structural support and vibration dampening applications in plumbing, HVAC, and general industrial piping systems.

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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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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 and the mounting surface. 2. Thread nuts onto both ends of the U-bolt, ensuring even pressure. 3. Tighten nuts to secure the pipe firmly without over-cinching, which could deform the pipe.

Equivalent Standards (Cross-Reference)

Standard SystemDesignation
ISO EquivalentISO 9001:2015 Mfg
DIN EquivalentIndustry Standard
Primary StandardASTM A106

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 / ExposedExcellent
Marine / SaltwaterNot Recommended
Chemical / AcidicNot Recommended

Common Mistakes & How to Avoid Them

❌ Mistake✅ Correct Approach
Over-tightening the U-bolt nutsTighten nuts until snug, then apply an additional 1/4 to 1/2 turn. Avoid deforming the pipe or the U-bolt.
Using the wrong size U-bolt for the pipeAlways confirm the nominal pipe size and select a U-bolt with the corresponding inside width and length specifications.

Common Applications

  • Securing 4" Schedule 40 and Schedule 80 pipes
  • Vibration isolation for industrial pipelines
  • Structural support in mechanical and plumbing systems

⚠️ Engineering Warnings

  • Ensure appropriate thread engagement with nuts for maximum holding strength.
  • Consider environmental factors and potential corrosion when selecting mounting hardware.

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, 4" Pipe made from?

A: This Carbon Steel U-Bolt, 4" Pipe is manufactured from Carbon Steel.

Q: What are the main applications?

A: Securing 4" Schedule 40 and Schedule 80 pipes, Vibration isolation for industrial pipelines, Structural support in mechanical and plumbing systems.

Technical Schematic

U-BOLT DIMENSIONAL DIAGRAMASME B18.31.5PIPE1"NUTNUTA = 1.75"B3.88"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.