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

304 Stainless U-Bolt for 4" Pipe | 3.43" W x 3.48" L | Corrosion Resistant

Expert Overview

This robust 304 stainless steel U-bolt is precisely engineered to secure 4" nominal pipe. Offering exceptional corrosion resistance and durability, it ensures reliable support in demanding applications.

StandardISO 9001
Material304 Stainless Steel
FinishAnodized
GradeN/A
Inside Width ( A)3.43"
Inside Length ( B)3.48"
Thread Size1/2"-13

Detailed Engineering Specifications

Specified by design engineers worldwide, this U-bolt is manufactured from premium 304 stainless steel, providing superior corrosion and oxidation resistance critical for marine, chemical processing, and outdoor environments. Featuring an inside width (A) of 3.43 inches and an inside length (B) of 3.48 inches, it is designed to accommodate 4-inch nominal pipe diameters. The 1/2"-13 UNC thread size ensures robust and secure fastening capabilities, meeting stringent industrial standards for structural integrity and longevity. The material's inherent strength and resistance to pitting and crevice corrosion make it an ideal choice for applications exposed to saltwater, acidic solutions, and high humidity.

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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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🌱 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" nominal pipe, ensuring proper fit within the saddle. 2. Thread the 1/2"-13 nuts onto the U-bolt legs, hand-tightening initially. 3. Apply torque evenly to both nuts using appropriate wrenches, ensuring a snug and secure fit without over-tightening, to achieve the specified clamping force.

Equivalent Standards (Cross-Reference)

Standard SystemDesignation
ISO EquivalentISO 9001:2015 Mfg
DIN EquivalentIndustry Standard
Primary StandardISO 9001

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 a U-bolt with incorrect dimensions for the pipe size.Always verify the inside width and length dimensions against the nominal pipe size and any required clearances.
Over-tightening the nuts, leading to deformation of the pipe or U-bolt.Tighten nuts evenly and to the manufacturer's recommended torque specifications to avoid material stress and damage.
Using a lower-grade material in corrosive environments.Select 304 stainless steel for its proven resistance to a wide range of corrosive media, preventing premature failure.

Common Applications

  • Pipe support and clamping in chemical processing plants
  • Marine applications and offshore structures
  • Plumbing and HVAC systems requiring corrosion resistance

⚠️ Engineering Warnings

  • Ensure compatibility of the 304 stainless steel with the specific chemical or environmental exposure.
  • Regularly inspect U-bolts for signs of wear, corrosion, or loosening, especially in high-vibration or critical applications.

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: Pipe support and clamping in chemical processing plants, Marine applications and offshore structures, Plumbing and HVAC systems requiring corrosion resistance.

Technical Schematic

U-BOLT DIMENSIONAL DIAGRAMASME B18.31.5PIPE1"NUTNUTA = 3.43"B3.48"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.