Home > U-Bolts > 304 Stainless Steel U-Bolt, 4" Pipe

304 Stainless Steel U-Bolt for 4" Pipe - 1.51" x 5.43" | 1/2"-13 Thread

Expert Overview

This 304 Stainless Steel U-Bolt is engineered for robust pipe support and clamping. Designed for 4" nominal pipe size, it offers superior corrosion resistance and structural integrity in demanding environments.

StandardASTM A106
Material304 Stainless Steel
FinishBlack Oxide
GradeN/A
Inside Width ( A)1.51"
Inside Length ( B)5.43"
Thread Size1/2"-13

Detailed Engineering Specifications

Manufactured under strict quality controls, this U-bolt is precision-formed from premium 304 stainless steel, renowned for its excellent resistance to a wide range of corrosive media, including atmospheric, industrial, and marine environments. Its dimensions are optimized for 4" nominal pipe, featuring an inside width (A) of 1.51 inches and an inside length (B) of 5.43 inches. The U-bolt is equipped with a standard 1/2"-13 UNC thread size, ensuring compatibility with common fastening hardware and providing significant tensile strength for secure mounting. This material selection and dimensional accuracy make it ideal for applications requiring long-term performance and reliability.

🧊 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."
Market Rank
🏆 Global Innovation Leader
Industry Approvals
🚀 Aviation & Medical Approved
Warranty & Support
🛡️ Premium Performance Guarantee
Green Manufacturing
🌱 100% Renewable Energy HQ
Certified:ISO 9001, ISO 14001
LoctiteEst. 1953
Germany🇩🇪
"Industrial adhesives and sealants."
Market Rank
🏆 #1 Global Adhesives
Industry Approvals
🚀 Formula 1 & Aerospace OEM
Warranty & Support
🛡️ 24/7 Application Support
Green Manufacturing
🌱 Climate Positive 2030
Certified:ISO 9001, IATF 16949
McMaster-CarrEst. 1901
USA🇺🇸
"Complete industrial supply."
Market Rank
🏆 #1 Industrial Supply Standard
Industry Approvals
🚀 US Military Approved
Warranty & Support
🛡️ 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 4" pipe, ensuring it rests securely in its saddle. 2. Thread the accompanying nuts onto the U-bolt legs until snug. 3. Tighten the nuts evenly using a torque wrench to the recommended specification for the pipe and mounting surface, ensuring uniform pressure and avoiding over-tightening.

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 nominal pipe size and compare it to the U-bolt's inside width and length specifications to ensure a proper fit and secure clamping action.
Over-tightening the nuts, which can deform the pipe or the U-bolt.Utilize a torque wrench and adhere to the manufacturer's recommended torque values for the specific pipe material, U-bolt size, and mounting application.
Not using the correct grade of stainless steel for the environmental conditions.Ensure the chosen grade (e.g., 304) is suitable for the expected exposure to corrosive elements, moisture, or chemicals to prevent premature degradation.

Common Applications

  • Marine and offshore installations
  • Chemical processing plants
  • Food and beverage processing
  • Plumbing and HVAC systems
  • Structural supports for piping

⚠️ Engineering Warnings

  • Ensure all fastening hardware (nuts, washers) is also made of 304 stainless steel to prevent galvanic corrosion.
  • Do not exceed the maximum load capacity specified by the U-bolt manufacturer for the given thread size and material.

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, 4" Pipe made from?

A: This 304 Stainless Steel U-Bolt, 4" Pipe is manufactured from 304 Stainless Steel.

Q: What are the main applications?

A: Marine and offshore installations, Chemical processing plants, Food and beverage processing, Plumbing and HVAC systems, Structural supports for piping.

Technical Schematic

U-BOLT DIMENSIONAL DIAGRAMASME B18.31.5PIPE1"NUTNUTA = 1.51"B5.43"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.