Home > U-Bolts > 316 Stainless Steel U-Bolt, 3" Pipe

316 Stainless Steel U-Bolt | 3" Pipe | 3.58" W x 3.37" L | 1/2"-13

Expert Overview

This 316 stainless steel U-bolt is engineered for secure and corrosion-resistant fastening of 3" nominal pipe. Its robust construction and superior material properties ensure reliable performance in challenging industrial and marine applications.

StandardASTM A106
Material316 Stainless Steel
FinishPassivated
GradeN/A
Inside Width ( A)3.58"
Inside Length ( B)3.37"
Thread Size1/2"-13

Detailed Engineering Specifications

Specified by design engineers worldwide, this U-bolt is manufactured from premium 316 stainless steel, offering exceptional resistance to pitting, crevice corrosion, and stress corrosion cracking, even in highly aggressive environments. The precise dimensions, including an inside width (A) of 3.58 inches and an inside length (B) of 3.37 inches, are optimized for snug and secure clamping of 3" nominal pipe. The standard 1/2"-13 UNC thread size ensures broad compatibility with common mounting hardware, facilitating straightforward integration into engineered systems. This specification guarantees structural integrity and longevity in demanding operational 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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LoctiteEst. 1953
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"Industrial adhesives and sealants."
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McMaster-CarrEst. 1901
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"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. Position the U-bolt around the 3" nominal pipe, ensuring it sits flush against the supporting structure. 2. Thread the 1/2"-13 nuts onto the U-bolt legs, hand-tightening initially to secure the pipe. 3. Using appropriate torque wrenches, tighten the nuts evenly in an alternating pattern to the manufacturer's recommended torque specification for the 1/2"-13 thread size, ensuring consistent pressure and eliminating pipe movement.

Equivalent Standards (Cross-Reference)

Standard SystemDesignation
ISO EquivalentISO 9001:2015 Mfg
DIN EquivalentIndustry Standard
Primary StandardASTM A106

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)16.0 - 18.0%
Nickel (Ni)10.0 - 14.0%
Molybdenum (Mo)2.0 - 3.0%

Temperature & Environment Rating

Min Operating Temp
-320°F (-195°C)
Max Continuous Temp
1500°F (815°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 / SaltwaterExcellent
Chemical / AcidicGood

Common Mistakes & How to Avoid Them

❌ Mistake✅ Correct Approach
Over-tightening the U-bolt nuts, which can deform the pipe or the U-bolt itself.Adhere strictly to the recommended torque specifications for the 1/2"-13 thread size, utilizing a calibrated torque wrench for accurate application.
Using a lower-grade stainless steel or carbon steel in corrosive environments, leading to premature failure.Always select 316 stainless steel for applications exposed to saltwater, chemicals, or high humidity to ensure long-term corrosion resistance and system integrity.

Common Applications

  • Marine vessel piping and conduit support
  • Offshore oil and gas platforms
  • Chemical processing plants
  • Wastewater treatment facilities
  • Coastal infrastructure projects

⚠️ Engineering Warnings

  • Ensure compatibility of mating hardware (nuts and washers) with 316 stainless steel to prevent galvanic corrosion.
  • Verify that the U-bolt dimensions are precisely matched to the nominal pipe size and the supporting structure's requirements.

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 316 Stainless Steel U-Bolt, 3" Pipe made from?

A: This 316 Stainless Steel U-Bolt, 3" Pipe is manufactured from 316 Stainless Steel.

Q: What are the main applications?

A: Marine vessel piping and conduit support, Offshore oil and gas platforms, Chemical processing plants, Wastewater treatment facilities, Coastal infrastructure projects.

Technical Schematic

U-BOLT DIMENSIONAL DIAGRAMASME B18.31.5PIPE1"NUTNUTA = 3.58"B3.37"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.