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

304 Stainless Steel U-Bolt, 3" Pipe, 1/2"-13 Thread

Expert Overview

Engineered for robust pipe support, this 304 stainless steel U-bolt is precisely designed for 3-inch nominal pipe diameters. Its superior corrosion resistance ensures longevity in demanding industrial and marine settings.

StandardDIN 933
Material304 Stainless Steel
FinishZinc Plated
GradeN/A
Inside Width ( A)1.72"
Inside Length ( B)4.83"
Thread Size1/2"-13

Detailed Engineering Specifications

Trusted by engineers across multiple sectors, this U-bolt is constructed from high-grade 304 stainless steel, offering excellent resistance to pitting and crevice corrosion, making it suitable for a wide array of chemical and marine applications. Featuring an inside width (A) of 1.72 inches and an inside length (B) of 4.83 inches, it accommodates standard 3-inch nominal pipes. The robust 1/2"-13 UNC thread size ensures secure fastening with compatible nuts and plates, providing reliable structural integrity for pipe systems under moderate loads and varying environmental conditions.

🧊 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 3-inch nominal pipe, ensuring it aligns with the mounting surface. 2. Place the provided or compatible flat or saddle washers onto the threaded legs. 3. Secure the assembly by threading the nuts onto the U-bolt legs, tightening evenly on both sides until firm, but avoid overtightening. 4. For critical applications, verify torque specifications against the load requirements and mounting surface capabilities.

Equivalent Standards (Cross-Reference)

Standard SystemDesignation
ISO EquivalentISO 9001:2015 Mfg
DIN EquivalentIndustry Standard
Primary StandardDIN 933

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
Selecting the wrong U-bolt size for the pipe's nominal diameter.Always confirm the U-bolt's inside dimensions (width and length) are appropriate for the specific nominal pipe size being supported, accounting for insulation if present.
Using a U-bolt in a corrosive environment without verifying material compatibility.Ensure the 304 stainless steel grade is suitable for the specific chemical or environmental exposure. For more aggressive conditions, consider higher grades like 316 stainless steel.
Uneven tightening of the U-bolt nuts, leading to stress concentrations.Tighten nuts incrementally and alternately on each leg to ensure uniform clamping force and distribute stress evenly across the pipe and mounting surface.

Common Applications

  • Marine hardware and vessel piping
  • Chemical processing plant pipe support
  • Wastewater treatment facility infrastructure
  • Food and beverage industry piping systems

⚠️ Engineering Warnings

  • Ensure mounting surface is adequately strong to support the pipe load and U-bolt clamping forces.
  • Periodically inspect U-bolts for signs of corrosion, wear, or loosening, especially in harsh environments.
  • Do not exceed the recommended load capacity for the U-bolt and its associated hardware.

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: Marine hardware and vessel piping, Chemical processing plant pipe support, Wastewater treatment facility infrastructure, Food and beverage industry piping systems.

Technical Schematic

U-BOLT DIMENSIONAL DIAGRAMASME B18.31.5PIPE1"NUTNUTA = 1.72"B4.83"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.