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

304 Stainless Steel U-Bolt 4" Pipe | 1.58" W x 5.33" L | Corrosion Resistant

Expert Overview

Engineered for superior performance, this 304 stainless steel U-bolt provides robust and corrosion-resistant support for 4" diameter pipes in demanding industrial and marine settings. Its precise dimensions ensure a secure and stable fit.

StandardISO 9001
Material304 Stainless Steel
FinishBlack Oxide
GradeN/A
Inside Width ( A)1.58"
Inside Length ( B)5.33"
Thread Size1/2"-13

Detailed Engineering Specifications

Purpose-built for heavy-duty applications, this U-bolt is manufactured from high-grade 304 stainless steel, renowned for its exceptional corrosion resistance, particularly in saline or chemically aggressive environments. The inside width (A) is precisely machined to 1.58 inches, accommodating standard 4-inch nominal pipe sizes with a secure fit. The inside length (B) of 5.33 inches allows for ample clearance and accommodates various mounting configurations, including attachment to beams, channels, or structural supports. The robust 1/2"-13 UNC thread size on each leg ensures a strong and reliable connection when paired with appropriate nuts and washers, providing long-lasting structural integrity in critical infrastructure, marine, and chemical processing applications.

🧊 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."
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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" pipe, ensuring it rests flush against the mounting surface. 2. Loosely thread the nuts onto the U-bolt legs. 3. Tighten the nuts evenly in an alternating pattern to achieve the specified torque, ensuring uniform pressure and secure clamping. 4. Verify the pipe is stable and the U-bolt is securely fastened before proceeding with system operation.

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 the wrong U-bolt size for the pipe diameter, leading to loose or overtightened connections.Always verify the nominal pipe size and cross-reference with the U-bolt's inside width (A) specification for a precise fit.
Insufficient tightening of nuts, resulting in vibration-induced loosening and potential failure.Utilize a torque wrench to tighten nuts to the manufacturer's recommended torque specifications for the thread size and application.
Employing carbon steel U-bolts in corrosive environments, leading to premature rust and structural degradation.Select 304 or 316 stainless steel U-bolts for applications exposed to moisture, chemicals, or saltwater to ensure long-term corrosion resistance.

Common Applications

  • Marine and offshore installations
  • Chemical processing plants
  • Plumbing and pipe support systems
  • Industrial machinery mounting
  • Exhaust system hangers

⚠️ Engineering Warnings

  • Ensure compatibility of nuts and washers with the 304 stainless steel U-bolt to prevent galvanic corrosion.
  • Do not exceed the load capacity or torque specifications recommended for this U-bolt to avoid structural failure.
  • Inspect U-bolts regularly for signs of wear, corrosion, or damage, and replace as necessary to maintain system integrity.

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, Plumbing and pipe support systems, Industrial machinery mounting, Exhaust system hangers.

Technical Schematic

U-BOLT DIMENSIONAL DIAGRAMASME B18.31.5PIPE1"NUTNUTA = 1.58"B5.33"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.