Home > U-Bolts > 304 Stainless Steel U-Bolt, 3" Pipe

304 Stainless U-Bolt 3" Pipe | 4.86" W x 7.91" L | Corrosion Resistant

Expert Overview

This 304 stainless steel U-bolt is engineered to securely fasten 3-inch diameter pipes. Its robust construction and premium material ensure reliable performance in demanding environments.

StandardASME B18
Material304 Stainless Steel
FinishGalvanized
GradeN/A
Inside Width ( A)4.86"
Inside Length ( B)7.91"
Thread Size1/2"-13

Detailed Engineering Specifications

Built to exacting engineering tolerances, this 304 stainless steel U-bolt is designed for optimal performance and longevity. The 4.86-inch inside width (A) accommodates standard 3-inch nominal pipe sizes, while the 7.91-inch inside length (B) provides ample clearance for mounting and associated hardware. Featuring robust 1/2"-13 threads, it offers superior tensile strength and secure fastening capabilities. The 304 stainless steel composition provides exceptional corrosion and oxidation resistance, making it ideal for marine, chemical processing, and outdoor applications where exposure to moisture and aggressive substances is a concern. This material also offers good mechanical properties at elevated temperatures.

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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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🏆 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 pipe, ensuring it is centered. 2. Place the accompanying mounting plate (if applicable) or backing material against the surface. 3. Insert the threaded legs of the U-bolt through the designated holes in the mounting plate or surface and secure with washers and nuts.

Equivalent Standards (Cross-Reference)

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

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
Overtightening nuts, which can deform the pipe or damage the threads.Tighten nuts to the manufacturer's recommended torque specification or until snug and secure, avoiding excessive force.
Using the wrong size U-bolt for the pipe diameter, leading to a loose or compromised connection.Always verify the inside width of the U-bolt matches the outer diameter of the pipe being secured, accounting for any insulation or jacketing.

Common Applications

  • Pipe support and conduit clamping in corrosive environments
  • Marine and offshore installations
  • Chemical processing equipment mounting
  • Plumbing and HVAC systems
  • Structural support applications

⚠️ Engineering Warnings

  • Ensure all fasteners (nuts and washers) are compatible with 304 stainless steel to prevent galvanic corrosion.
  • For critical load-bearing applications, consult engineering specifications and consider professional installation.

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 conduit clamping in corrosive environments, Marine and offshore installations, Chemical processing equipment mounting, Plumbing and HVAC systems, Structural support applications.

Technical Schematic

U-BOLT DIMENSIONAL DIAGRAMASME B18.31.5PIPE1"NUTNUTA = 4.86"B7.91"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.