Home > U-Bolts > Aluminum 6061 U-Bolt, 3" Pipe

3" Aluminum 6061 U-Bolt | 3.49" Width x 5.18" Length | 1/2"-13 Thread

Expert Overview

Engineered for superior corrosion resistance and lightweight performance, this 3-inch Aluminum 6061 U-Bolt provides robust clamping for critical infrastructure and specialized applications.

StandardASME B18
MaterialAluminum 6061
FinishPlain
GradeN/A
Inside Width ( A)3.49"
Inside Length ( B)5.18"
Thread Size1/2"-13

Detailed Engineering Specifications

Specified by design engineers worldwide, this Aluminum 6061 U-Bolt is manufactured to exacting tolerances for reliable structural support. Featuring an inside width (A) of 3.49 inches and an inside length (B) of 5.18 inches, it is designed to accommodate standard 3-inch nominal pipe. The threaded ends utilize a 1/2"-13 UNC thread size, ensuring compatibility with standard fasteners. Aluminum 6061's excellent strength-to-weight ratio and inherent resistance to environmental degradation make it ideal for marine environments, aerospace, and applications where weight reduction is paramount. Its alloy composition provides good weldability and machinability.

🧊 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."
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🏆 Global Innovation Leader
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🌱 100% Renewable Energy HQ
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:N/A

Installation Procedure

1. Position the U-bolt around the pipe or conduit, ensuring it is centered. 2. Place the corresponding U-bolt plate or saddle (if applicable) and thread the nuts onto the bolt ends. 3. Tighten nuts evenly and incrementally to achieve the specified clamping force, avoiding over-tightening which can deform the pipe or bolt.

Equivalent Standards (Cross-Reference)

Standard SystemDesignation
ISO EquivalentISO 9001:2015 Mfg
DIN EquivalentIndustry Standard
Primary StandardASME B18

Mechanical Properties

Tensile StrengthStandard Commercial Spec
Yield StrengthStandard Commercial Spec
HardnessVaries by specific batch

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 standard steel U-bolts in corrosive environments, leading to premature failure.Select Aluminum 6061 U-bolts for marine, chemical processing, or outdoor applications requiring superior corrosion resistance.
Incorrectly measuring pipe diameter, resulting in a U-bolt that is too large or too small.Always confirm the nominal pipe size and verify the U-bolt's inside dimensions against the pipe's outside diameter before ordering.

Common Applications

  • Marine vessel outfitting and support structures
  • Aerospace component mounting
  • Lightweight conduit and pipe clamping in corrosive environments
  • Specialized equipment fabrication

⚠️ Engineering Warnings

  • Ensure proper torque is applied during installation to avoid compromising structural integrity.
  • Not intended for high-temperature applications where aluminum alloy properties may be compromised.

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 Aluminum 6061 U-Bolt, 3" Pipe made from?

A: This Aluminum 6061 U-Bolt, 3" Pipe is manufactured from Aluminum 6061.

Q: What are the main applications?

A: Marine vessel outfitting and support structures, Aerospace component mounting, Lightweight conduit and pipe clamping in corrosive environments, Specialized equipment fabrication.

Technical Schematic

U-BOLT DIMENSIONAL DIAGRAMASME B18.31.5PIPE1"NUTNUTA = 3.49"B5.18"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.