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304 Stainless U-Bolt for 3" Pipe - 3.9" Width, 4" Length

Expert Overview

Engineered for robust pipe support, this 304 Stainless Steel U-Bolt ensures secure fastening for 3-inch diameter piping systems. Its high-grade stainless steel construction guarantees superior corrosion resistance and long-term structural integrity in harsh environments.

StandardASTM A106
Material304 Stainless Steel
FinishGalvanized
GradeN/A
Inside Width ( A)3.90"
Inside Length ( B)4.02"
Thread Size1/2"-13

Detailed Engineering Specifications

A proven choice for industrial professionals, this U-Bolt is meticulously manufactured from premium 304 stainless steel, offering exceptional tensile strength and resistance to a wide spectrum of corrosive agents, including salts, acids, and alkaline solutions. Its precise dimensions, with an inside width (A) of 3.90 inches and an inside length (B) of 4.02 inches, are engineered to perfectly accommodate standard 3-inch nominal pipe sizes. The robust 1/2"-13 UNC thread size provides secure engagement with compatible nuts and mounting hardware, ensuring reliable and stable pipe anchoring in critical infrastructure, marine, chemical processing, and food service applications.

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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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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 mounting plate or saddle beneath the pipe and align the U-bolt legs through the plate's openings. 3. Secure the U-bolt by threading the appropriate nuts onto the legs, tightening them evenly and firmly to the recommended torque specification.

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
Over-tightening U-bolt legs, which can deform the pipe or lead to premature material fatigue.Use a torque wrench and adhere to manufacturer-recommended torque values for the specific pipe material and application.
Using incorrect thread size nuts, compromising the security of the connection.Always verify that the nut thread size (1/2"-13) matches the U-bolt thread size.

Common Applications

  • Pipe clamping and support in plumbing systems
  • Anchoring conduit and electrical raceways
  • Securing marine and offshore equipment

⚠️ Engineering Warnings

  • Ensure compatibility of mounting hardware (nuts, washers) with 304 stainless steel to prevent galvanic corrosion.
  • Regularly inspect for signs of wear, corrosion, or loose fittings, especially in aggressive environmental conditions.

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 clamping and support in plumbing systems, Anchoring conduit and electrical raceways, Securing marine and offshore equipment.

Technical Schematic

U-BOLT DIMENSIONAL DIAGRAMASME B18.31.5PIPE1"NUTNUTA = 3.90"B4.02"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.