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

316 Stainless U-Bolt for 3" Pipe | 1/2"-13 Thread | 1.26" W x 2.51" L

Expert Overview

Engineered for superior corrosion resistance, this 316 Stainless Steel U-Bolt is designed to securely fasten 3" nominal pipes. Its robust construction ensures long-term performance in harsh industrial and marine settings.

StandardASME B18
Material316 Stainless Steel
FinishPassivated
GradeN/A
Inside Width ( A)1.26"
Inside Length ( B)2.51"
Thread Size1/2"-13

Detailed Engineering Specifications

Built to exacting engineering tolerances, this U-bolt is fabricated from premium 316 stainless steel, offering exceptional resistance to pitting and crevice corrosion in chloride-laden environments. The precise dimensions of 1.26" inside width (A) and 2.51" inside length (B) ensure a snug and secure fit around standard 3" Schedule 40 pipe. The robust 1/2"-13 UNC threads provide ample clamping force and are compatible with standard nuts and washers (sold separately). This material is ideal for applications involving saltwater, chemicals, and extreme temperatures, maintaining structural integrity and preventing premature failure.

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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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🌱 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 pipe, ensuring it sits flush against the supporting structure. 2. Thread the nuts onto the U-bolt legs, hand-tightening initially. 3. Use appropriate wrenches to tighten the nuts evenly on both sides, applying sufficient torque to secure the pipe without deforming it. Consult pipe support guidelines for specific torque values.

Equivalent Standards (Cross-Reference)

Standard SystemDesignation
ISO EquivalentISO 9001:2015 Mfg
DIN EquivalentIndustry Standard
Primary StandardASME B18

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
Using incorrect U-bolt size for the pipe diameter.Always verify the nominal pipe size and select a U-bolt with corresponding inside dimensions (A and B) for a secure fit.
Over-tightening the nuts, leading to pipe deformation or U-bolt stretching.Tighten nuts evenly and firmly to secure the pipe, but avoid excessive force. Refer to engineering specifications or pipe support best practices for recommended torque.
Using standard carbon steel U-bolts in corrosive environments.Select 316 stainless steel for applications exposed to saltwater, chemicals, or high humidity to prevent premature rust and failure.

Common Applications

  • Marine piping and conduit support
  • Chemical processing equipment mounting
  • Offshore oil and gas platforms
  • Food and beverage processing lines
  • Wastewater treatment facilities

⚠️ Engineering Warnings

  • Ensure nuts and washers are also made of 316 stainless steel to maintain corrosion resistance and prevent galvanic corrosion.
  • Do not exceed the recommended load capacity of the U-bolt, which depends on the material thickness and thread engagement.
  • Regularly inspect U-bolts in corrosive environments for signs of wear, damage, or excessive corrosion.

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 piping and conduit support, Chemical processing equipment mounting, Offshore oil and gas platforms, Food and beverage processing lines, Wastewater treatment facilities.

Technical Schematic

U-BOLT DIMENSIONAL DIAGRAMASME B18.31.5PIPE1"NUTNUTA = 1.26"B2.51"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.