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

3" 304 Stainless Steel U-Bolt | 4.20" Width | 1/2"-13 Thread

Expert Overview

This robust 3" U-bolt, crafted from premium 304 stainless steel, offers exceptional corrosion resistance. Engineered for secure pipe attachment in demanding environments.

StandardDIN 933
Material304 Stainless Steel
FinishGalvanized
GradeN/A
Inside Width ( A)4.20"
Inside Length ( B)4.17"
Thread Size1/2"-13

Detailed Engineering Specifications

Purpose-built for heavy-duty applications, this U-bolt is constructed from ASTM A276 Type 304 stainless steel, renowned for its superior corrosion and oxidation resistance, especially in marine, chemical, and food processing industries. The precise dimensions, featuring an inside width (A) of 4.20 inches and an inside length (B) of 4.17 inches, ensure a snug and secure fit around standard 3-inch nominal pipes. The 1/2"-13 UNC thread size allows for robust fastening with appropriately sized nuts and washers (sold separately), providing reliable structural support and vibration dampening for critical pipe systems. Its inherent strength and durability make it suitable for exposed installations and environments prone to moisture or corrosive agents.

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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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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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McMaster-CarrEst. 1901
USA🇺🇸
"Complete industrial supply."
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Certified:ISO 9001 Compliant

Certifications & Compliance

RoHS Compliant:Yes
REACH Compliant:Yes
Material Traceability:Available on Request
DFARS Compliant:Yes

Installation Procedure

1. Clean the pipe and mounting surface to ensure proper contact. 2. Position the U-bolt around the pipe and through the mounting holes or plate. 3. Thread the nuts onto the U-bolt legs, tightening evenly to secure the pipe without over-compression.

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
Using standard carbon steel U-bolts in corrosive environments.Always specify 304 or 316 stainless steel for marine, chemical, or outdoor applications to prevent premature rust and failure.
Over-tightening the nuts, which can deform the pipe or the U-bolt.Tighten nuts evenly and progressively, ensuring a secure hold without excessive force. Use torque specifications if available for the application.

Common Applications

  • Marine pipe securing
  • Chemical processing equipment
  • Plumbing and conduit support
  • Automotive exhaust systems

⚠️ Engineering Warnings

  • Ensure compatibility of fasteners (nuts and washers) with 304 stainless steel to avoid galvanic corrosion.
  • Verify that the pipe outer diameter is within the acceptable range for the specified inside width and length of the U-bolt.

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 pipe securing, Chemical processing equipment, Plumbing and conduit support, Automotive exhaust systems.

Technical Schematic

U-BOLT DIMENSIONAL DIAGRAMASME B18.31.5PIPE1"NUTNUTA = 4.20"B4.17"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.