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3" Brass U-Bolt | 3.98" Width x 3.45" Length | 1/2"-13 Thread

Expert Overview

Engineered for superior performance, this 3" Brass U-Bolt provides robust and corrosion-resistant support for industrial piping systems. Its precise dimensions and durable brass construction ensure long-lasting reliability in challenging environments.

StandardASTM A106
MaterialBrass
FinishAnodized
GradeN/A
Inside Width ( A)3.98"
Inside Length ( B)3.45"
Thread Size1/2"-13

Detailed Engineering Specifications

Designed for demanding industrial environments, this U-bolt is fabricated from high-grade brass, offering exceptional resistance to corrosion, chemicals, and galvanic decomposition, making it ideal for marine, chemical processing, and food-grade applications. The inside width (A) measures 3.98 inches, accommodating pipes up to this diameter, while the inside length (B) is 3.45 inches, providing ample clearance. The robust 1/2"-13 UNC threads ensure a secure and steadfast connection when paired with appropriate nuts and washers, delivering critical structural support and vibration dampening.

🧊 Download 3D CAD Model (.STEP)

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."
Market Rank
🏆 Global Innovation Leader
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🚀 Aviation & Medical Approved
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🛡️ Premium Performance Guarantee
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🌱 100% Renewable Energy HQ
Certified:ISO 9001, ISO 14001
LoctiteEst. 1953
Germany🇩🇪
"Industrial adhesives and sealants."
Market Rank
🏆 #1 Global Adhesives
Industry Approvals
🚀 Formula 1 & Aerospace OEM
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🛡️ 24/7 Application Support
Green Manufacturing
🌱 Climate Positive 2030
Certified:ISO 9001, IATF 16949
McMaster-CarrEst. 1901
USA🇺🇸
"Complete industrial supply."
Market Rank
🏆 #1 Industrial Supply Standard
Industry Approvals
🚀 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:N/A

Installation Procedure

1. Position the U-bolt around the pipe, ensuring it is centered and snug. 2. Thread the nuts onto the U-bolt legs, hand-tightening initially. 3. Tighten the nuts evenly using appropriate wrenches to the recommended torque specification, ensuring the pipe is securely held without deformation.

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

Copper (Cu)60.0 - 63.0%
Zinc (Zn)Balance
Lead (Pb)2.5 - 3.7%

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 size U-bolt for the pipe diameter.Always verify the pipe's outer diameter and select a U-bolt with an inside width slightly larger than this dimension to ensure a proper fit.
Over-tightening the nuts, causing pipe damage.Tighten nuts gradually and evenly, using a torque wrench if available, to secure the pipe without crushing or deforming it.
Not using washers, leading to uneven pressure distribution.Always use flat washers under the nuts to distribute the clamping force evenly across the U-bolt legs and the pipe surface.

Common Applications

  • Support for copper or brass piping in marine environments
  • Securing conduit and tubing in corrosive chemical plants
  • Plumbing applications requiring non-sparking and corrosion-resistant fasteners

⚠️ Engineering Warnings

  • Ensure compatibility with the specific fluid or gas being transported to prevent material degradation.
  • Do not exceed the maximum recommended load capacity for this U-bolt.

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 Brass U-Bolt, 3" Pipe made from?

A: This Brass U-Bolt, 3" Pipe is manufactured from Brass.

Q: What are the main applications?

A: Support for copper or brass piping in marine environments, Securing conduit and tubing in corrosive chemical plants, Plumbing applications requiring non-sparking and corrosion-resistant fasteners.

Technical Schematic

U-BOLT DIMENSIONAL DIAGRAMASME B18.31.5PIPE1"NUTNUTA = 3.98"B3.45"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.