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

316 Stainless Steel U-Bolt for 3" Pipe - 4.37" Width

Expert Overview

This heavy-duty U-bolt is precision-engineered from superior 316 stainless steel, offering exceptional corrosion resistance. Designed to securely fasten 3-inch diameter pipes, it ensures structural integrity in demanding environments.

StandardDIN 933
Material316 Stainless Steel
FinishPlain
GradeN/A
Inside Width ( A)4.37"
Inside Length ( B)2.06"
Thread Size1/2"-13

Detailed Engineering Specifications

Engineered for reliability and performance, this U-bolt is fabricated from premium 316 stainless steel, renowned for its superior resistance to pitting and crevice corrosion, particularly in chloride-rich environments. Its robust construction features an inside width (A) of 4.37 inches and an inside length (B) of 2.06 inches, perfectly accommodating standard 3-inch nominal pipe sizes. The 1/2"-13 UNC threading provides substantial load-bearing capacity and secure fastening. This specification is critical for applications requiring long-term durability and resistance to harsh atmospheric or submerged conditions, such as marine installations, chemical processing, and food-grade environments.

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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
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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 pipe, ensuring it is centered and aligned with the mounting surface. 2. Insert the threaded ends through the designated mounting holes or plate. 3. Secure the U-bolt by threading on the washers and nuts, tightening them evenly on both sides to the specified torque. 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
Selecting the wrong U-bolt size for the pipe diameter.Always verify the nominal pipe size and measure the required inside width (A) and length (B) to ensure a proper fit.
Using standard steel U-bolts in corrosive environments.For marine, chemical, or outdoor applications, always opt for 316 stainless steel to prevent premature rust and failure.
Uneven tightening of nuts leading to stress concentration.Tighten nuts alternately and incrementally to ensure even pressure distribution across the U-bolt and mounting surface.

Common Applications

  • Marine hardware and vessel support
  • Chemical processing equipment mounting
  • Food and beverage industry piping
  • Outdoor structural pipe support
  • Exhaust system clamping

⚠️ Engineering Warnings

  • Ensure thread engagement is sufficient for load requirements.
  • Periodically inspect for signs of wear, corrosion, or loose fittings, especially in harsh environments.
  • Use appropriate torque settings to avoid over-stressing the U-bolt or mounting surface.

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 hardware and vessel support, Chemical processing equipment mounting, Food and beverage industry piping, Outdoor structural pipe support, Exhaust system clamping.

Technical Schematic

U-BOLT DIMENSIONAL DIAGRAMASME B18.31.5PIPE1"NUTNUTA = 4.37"B2.06"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.