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316 Stainless Steel U-Bolt for 3" Pipe - 1.75" x 4.39" | 1/2"-13

Expert Overview

Engineered for superior corrosion resistance and robust support, this 316 stainless steel U-bolt is specifically designed for securing 3-inch nominal pipe. Its precise dimensions ensure a secure fit and long-lasting performance in challenging conditions.

StandardASTM A106
Material316 Stainless Steel
FinishBlack Oxide
GradeN/A
Inside Width ( A)1.75"
Inside Length ( B)4.39"
Thread Size1/2"-13

Detailed Engineering Specifications

Precision-manufactured to tight tolerances, this 316 stainless steel U-bolt offers exceptional durability and resistance to corrosive environments, including saltwater and chemical exposure. The material's inherent strength ensures reliable load-bearing capabilities for 3" nominal pipe applications. With an inside width of 1.75" and an inside length of 4.39", it provides ample clearance and secure clamping. The robust 1/2"-13 UNC thread size allows for a strong, dependable connection with compatible nuts and washers, making it ideal for marine, chemical processing, and industrial infrastructure projects where material integrity is paramount.

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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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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" pipe, ensuring the pipe rests evenly within the curved section. 2. Place a flat washer and then a lock washer onto each threaded leg of the U-bolt. 3. Thread a 1/2"-13 nut onto each leg, tightening them evenly until the pipe is securely clamped. Avoid overtightening.

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
Using a standard carbon steel U-bolt in a corrosive environment.Always select 316 stainless steel for applications exposed to moisture, saltwater, or chemicals to prevent premature corrosion and failure.
Improperly sized U-bolt for the pipe diameter.Verify the pipe's nominal size and ensure the U-bolt's inside dimensions (width and length) are appropriate for a snug and secure fit without deforming the pipe.

Common Applications

  • Marine pipe support systems
  • Chemical processing equipment mounting
  • Industrial plumbing and conduit securing

⚠️ Engineering Warnings

  • Ensure proper torque is applied during installation to avoid damaging the pipe or the U-bolt.
  • Regularly inspect for signs of wear or corrosion, 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 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 pipe support systems, Chemical processing equipment mounting, Industrial plumbing and conduit securing.

Technical Schematic

U-BOLT DIMENSIONAL DIAGRAMASME B18.31.5PIPE1"NUTNUTA = 1.75"B4.39"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.