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304 Stainless Steel U-Bolt for 3" Pipe - 3.71" W x 4.02" L

Expert Overview

Engineered for robust pipe support, this 304 stainless steel U-bolt is specifically designed for 3-inch nominal pipe diameters. Its corrosion-resistant properties ensure long-term reliability in demanding environments.

StandardISO 9001
Material304 Stainless Steel
FinishAnodized
GradeN/A
Inside Width ( A)3.71"
Inside Length ( B)4.02"
Thread Size1/2"-13

Detailed Engineering Specifications

Manufactured under strict quality controls, this U-bolt is forged from premium 304 stainless steel, offering superior resistance to corrosion and oxidation, making it ideal for marine, chemical processing, and outdoor applications. Key dimensions include an inside width (A) of 3.71 inches and an inside length (B) of 4.02 inches, precisely accommodating a 3-inch nominal pipe. The robust 1/2"-13 UNC threads ensure secure fastening with compatible nuts and washers (sold separately), providing exceptional structural integrity and load-bearing capacity. This material grade is chosen for its excellent durability and non-magnetic properties in various 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."
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🏆 Global Innovation Leader
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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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🛡️ 24/7 Application Support
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🌱 Climate Positive 2030
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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🛡️ 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 pipe, ensuring it sits squarely on the supporting structure. 2. Thread the nuts onto the U-bolt legs, hand-tightening initially. 3. Using appropriate wrenches, progressively tighten the nuts in an alternating pattern to achieve uniform clamping pressure, ensuring the pipe is securely held without deformation.

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 (A) and inside length (B) to ensure a proper fit for the specific pipe diameter.
Over-tightening or uneven tightening of the nuts.Tighten nuts alternately and progressively to apply even pressure, preventing pipe damage and ensuring a secure fit.
Using standard carbon steel fasteners with stainless steel U-bolts.Always pair stainless steel U-bolts with compatible stainless steel nuts and washers to prevent galvanic corrosion.

Common Applications

  • Marine and offshore pipe securing
  • Chemical processing plant pipe supports
  • Outdoor conduit and pipe mounting
  • Plumbing and HVAC system bracing

⚠️ Engineering Warnings

  • Ensure compatibility of nuts and washers with 304 stainless steel to prevent corrosion.
  • Do not exceed the recommended load capacity for the chosen U-bolt size and material.
  • Regularly inspect for signs of wear, corrosion, or loosening, especially in harsh environments.

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 and offshore pipe securing, Chemical processing plant pipe supports, Outdoor conduit and pipe mounting, Plumbing and HVAC system bracing.

Technical Schematic

U-BOLT DIMENSIONAL DIAGRAMASME B18.31.5PIPE1"NUTNUTA = 3.71"B4.02"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.