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316 Stainless Steel U-Bolt, 3" Pipe - 3.22" W x 5.22" L

Expert Overview

Engineered for superior corrosion resistance, this 316 stainless steel U-bolt is ideal for securing 3-inch diameter piping systems in harsh industrial and marine applications. Its robust construction ensures long-term structural integrity.

StandardDIN 933
Material316 Stainless Steel
FinishBlack Oxide
GradeN/A
Inside Width ( A)3.22"
Inside Length ( B)5.22"
Thread Size1/2"-13

Detailed Engineering Specifications

Precision-manufactured to tight tolerances, this U-bolt is constructed from premium 316 stainless steel, renowned for its exceptional resistance to chloride pitting and crevice corrosion, making it suitable for marine, chemical, and food processing environments. The U-bolt features an inside width (A) of 3.22 inches and an inside length (B) of 5.22 inches, specifically designed to accommodate standard 3-inch nominal pipe sizes. The threads are a robust 1/2"-13 UNC (Unified National Coarse) size, ensuring secure fastening with corresponding nuts and washers. The material's high tensile strength and ductility provide reliable load-bearing capacity under demanding operational conditions.

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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
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"Industrial adhesives and sealants."
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🏆 #1 Global Adhesives
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McMaster-CarrEst. 1901
USA🇺🇸
"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-inch pipe, ensuring it is centered and square. 2. Place the provided saddle or mounting surface against the pipe and through the U-bolt legs. 3. Thread the 1/2"-13 nuts onto the U-bolt legs and tighten evenly to secure the pipe. Do not overtighten.

Equivalent Standards (Cross-Reference)

Standard SystemDesignation
ISO EquivalentISO 9001:2015 Mfg
DIN EquivalentIndustry Standard
Primary StandardDIN 933

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 the wrong size U-bolt for the pipe diameter.Always verify the pipe's nominal and actual outside diameter against the U-bolt's inside dimensions (A) and (B) before installation.
Using standard carbon steel U-bolts in corrosive environments.For applications exposed to moisture, saltwater, or chemicals, always select 316 stainless steel for superior corrosion resistance and longevity.
Uneven tightening of nuts, leading to stress concentration.Tighten nuts incrementally and evenly on both legs of the U-bolt to distribute stress uniformly and prevent pipe deformation.

Common Applications

  • Marine piping support
  • Chemical processing equipment
  • Food and beverage industry plumbing
  • Offshore oil and gas installations
  • Wastewater treatment facilities

⚠️ Engineering Warnings

  • Ensure compatibility of mating hardware (nuts, washers) with 316 stainless steel to prevent galvanic corrosion.
  • Do not exceed the U-bolt's rated load capacity, which is dependent on material strength and thread engagement.

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 support, Chemical processing equipment, Food and beverage industry plumbing, Offshore oil and gas installations, Wastewater treatment facilities.

Technical Schematic

U-BOLT DIMENSIONAL DIAGRAMASME B18.31.5PIPE1"NUTNUTA = 3.22"B5.22"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.