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304 Stainless U-Bolt for 3" Pipe - 1.25" x 2.38" x 1/2"-13

Expert Overview

Engineered for secure pipe support, this 304 stainless steel U-bolt is designed for 3-inch nominal pipe. Its robust construction ensures reliable fastening in demanding environments, preventing unwanted movement and vibration.

StandardASTM A106
Material304 Stainless Steel
FinishPassivated
GradeN/A
Inside Width ( A)1.25"
Inside Length ( B)2.38"
Thread Size1/2"-13

Detailed Engineering Specifications

Specified by design engineers worldwide, this 304 Stainless Steel U-Bolt is manufactured to precise tolerances for optimal performance in 3" pipe applications. Featuring an Inside Width (A) of 1.25" and an Inside Length (B) of 2.38", it is threaded with a standard 1/2"-13 UNC thread pattern. The 304 stainless steel composition offers superior corrosion resistance, high tensile strength, and excellent durability in a wide range of environmental conditions, including exposure to moisture, chemicals, and saltwater. This makes it ideal for plumbing, marine, automotive, and structural support systems where longevity and integrity are paramount.

🧊 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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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 3" pipe, ensuring the pipe is centered within the U-bolt's radius. 2. Slide the included nuts onto the threaded legs of the U-bolt. 3. Tighten the nuts evenly on both sides using appropriate wrenches until the pipe is securely clamped and immobilized.

Equivalent Standards (Cross-Reference)

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

Mechanical Properties

Tensile Strength75,000 psi (515 MPa)
Yield Strength30,000 psi (205 MPa)
Elongation in 2 in.40% min
HardnessRockwell B95 max

Chemical Composition

Carbon (C)0.08% max
Chromium (Cr)18.0 - 20.0%
Nickel (Ni)8.0 - 10.5%
Manganese (Mn)2.00% max

Temperature & Environment Rating

Min Operating Temp
-320°F (-195°C)
Max Continuous Temp
1400°F (760°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 / SaltwaterGood
Chemical / AcidicNot Recommended

Common Mistakes & How to Avoid Them

❌ Mistake✅ Correct Approach
Incorrect U-bolt sizing for the pipe diameter.Verify the U-bolt's Inside Width (A) and Inside Length (B) match the outer diameter and required clearance for the specific pipe size.
Using insufficient thread engagement when tightening nuts.Ensure at least two to three full threads are visible beyond the nut for secure fastening.

Common Applications

  • Pipe support and fastening
  • Marine and offshore equipment
  • Automotive exhaust and chassis components
  • Plumbing and HVAC systems
  • General structural fabrication

⚠️ Engineering Warnings

  • Ensure thread pitch and diameter match appropriate nuts.
  • Do not overtighten, which can deform the pipe or 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 304 Stainless Steel U-Bolt, 3" Pipe made from?

A: This 304 Stainless Steel U-Bolt, 3" Pipe is manufactured from 304 Stainless Steel.

Q: What are the main applications?

A: Pipe support and fastening, Marine and offshore equipment, Automotive exhaust and chassis components, Plumbing and HVAC systems, General structural fabrication.

Technical Schematic

U-BOLT DIMENSIONAL DIAGRAMASME B18.31.5PIPE1"NUTNUTA = 1.25"B2.38"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.