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

304 Stainless Steel U-Bolt for 3" Pipe | 3.19" W x 3.90" L

Expert Overview

Securely mount 3" diameter piping with this robust 304 stainless steel U-bolt. Engineered for superior corrosion resistance and enduring strength, ensuring reliable support in demanding applications.

StandardASTM A106
Material304 Stainless Steel
FinishGalvanized
GradeN/A
Inside Width ( A)3.19"
Inside Length ( B)3.90"
Thread Size1/2"-13

Detailed Engineering Specifications

Built to exacting engineering tolerances, this U-bolt features an inside width (A) of 3.19 inches and an inside length (B) of 3.90 inches, precisely accommodating standard 3-inch nominal pipe. Constructed from premium 304 stainless steel, it offers exceptional resistance to corrosion, pitting, and stress cracking, making it ideal for marine, chemical processing, food and beverage, and outdoor environments. The 1/2"-13 UNC thread size ensures compatibility with standard nuts and washers for secure fastening. Its design provides reliable load-bearing capacity and long-term performance under various environmental conditions.

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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
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🌱 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 through the mounting surface or bracket. 2. Thread the nuts onto the U-bolt legs, ensuring they are snug. 3. Tighten the nuts evenly to secure the pipe without over-compressing it, using appropriate torque values for the application.

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
Using the wrong size U-bolt for the pipe diameter.Always verify the pipe's nominal and actual outer diameter to select the correct U-bolt width.
Over-tightening the nuts, deforming the pipe or U-bolt.Tighten nuts evenly and to the manufacturer's recommended torque specification to avoid damaging the components.
Using a material not resistant to the operating environment.Select 304 stainless steel for general corrosion resistance, or 316 stainless steel for more aggressive chemical or marine environments.

Common Applications

  • Plumbing and piping support in corrosive environments
  • Marine and offshore installations
  • Chemical processing and food/beverage industries
  • General structural support for conduit and tubing

⚠️ Engineering Warnings

  • Ensure proper torque is applied to prevent component failure or damage.
  • Verify material compatibility with the specific environmental conditions.
  • Always use appropriate safety equipment during 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: Plumbing and piping support in corrosive environments, Marine and offshore installations, Chemical processing and food/beverage industries, General structural support for conduit and tubing.

Technical Schematic

U-BOLT DIMENSIONAL DIAGRAMASME B18.31.5PIPE1"NUTNUTA = 3.19"B3.90"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.