Home > U-Bolts > 316 Stainless Steel U-Bolt, 4" Pipe

4" 316 Stainless Steel U-Bolt | 1/2"-13 Thread | Corrosion Resistant

Expert Overview

Engineered for demanding applications, this 4" U-bolt is crafted from premium 316 stainless steel. It offers exceptional corrosion resistance, making it ideal for marine, chemical, and outdoor environments where reliability is paramount.

StandardISO 9001
Material316 Stainless Steel
FinishGalvanized
GradeN/A
Inside Width ( A)2.31"
Inside Length ( B)6.65"
Thread Size1/2"-13

Detailed Engineering Specifications

Manufactured under strict quality controls, this U-bolt is precision-formed from marine-grade 316 stainless steel, renowned for its superior resistance to pitting and crevice corrosion in chloride-rich environments. It is designed to accommodate a nominal 4" pipe diameter, with an inside width (A) of 2.31 inches and an inside length (B) of 6.65 inches. The threads are a standard 1/2"-13 UNC, ensuring compatibility with common locking nuts and washers. This robust construction guarantees long-term structural integrity and performance under static and dynamic loads in challenging 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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Certified:ISO 9001, ISO 14001
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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Certified:ISO 9001, IATF 16949
McMaster-CarrEst. 1901
USA🇺🇸
"Complete industrial supply."
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🏆 #1 Industrial Supply Standard
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🚀 US Military Approved
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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 mounting surface. 2. Thread the nuts onto the U-bolt legs until snug, ensuring even pressure. 3. Tighten the nuts to the recommended torque specification for the chosen locking mechanism and pipe material to prevent vibration-induced loosening.

Equivalent Standards (Cross-Reference)

Standard SystemDesignation
ISO EquivalentISO 9001:2015 Mfg
DIN EquivalentIndustry Standard
Primary StandardISO 9001

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 nuts, which can deform the pipe or the U-bolt.Utilize a torque wrench and adhere to manufacturer-specified torque values for the pipe size and material.
Using standard zinc-plated fasteners with 316 stainless steel, leading to galvanic corrosion.Always use compatible 316 stainless steel nuts and washers to maintain the corrosion resistance of the assembly.

Common Applications

  • Marine hardware and vessel support
  • Chemical processing equipment mounting
  • Outdoor pipe and conduit bracing

⚠️ Engineering Warnings

  • Ensure the selected U-bolt size and material are appropriate for the pipe diameter and the environmental exposure.
  • Verify thread compatibility with nuts and washers before installation to prevent cross-threading or premature failure.

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, 4" Pipe made from?

A: This 316 Stainless Steel U-Bolt, 4" Pipe is manufactured from 316 Stainless Steel.

Q: What are the main applications?

A: Marine hardware and vessel support, Chemical processing equipment mounting, Outdoor pipe and conduit bracing.

Technical Schematic

U-BOLT DIMENSIONAL DIAGRAMASME B18.31.5PIPE1"NUTNUTA = 2.31"B6.65"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.