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316 Stainless Steel U-Bolt | 4" Pipe | 3.44" W x 7.90" L

Expert Overview

This 316 stainless steel U-bolt is engineered for secure pipe support in corrosive environments. With a 3.44" inside width and 7.90" inside length, it precisely fits 4" nominal pipe sizes.

StandardISO 9001
Material316 Stainless Steel
FinishBlack Oxide
GradeN/A
Inside Width ( A)3.44"
Inside Length ( B)7.90"
Thread Size1/2"-13

Detailed Engineering Specifications

Designed for demanding industrial environments, this U-bolt is fabricated from premium 316 stainless steel, offering superior corrosion and pitting resistance, especially in marine, chemical processing, and food/beverage applications. Its robust construction, featuring a 3.44-inch inside width (A) and 7.90-inch inside length (B), ensures a secure fit for 4-inch nominal pipe. The 1/2"-13 UNC thread size provides ample strength for reliable fastening with corresponding nuts and washers, ensuring long-term structural integrity under stress and environmental exposure. This material choice is critical for applications where resistance to chlorides and other aggressive substances 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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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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🛡️ Lifetime Return Policy
Green Manufacturing
🌱 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 4" pipe, ensuring the pipe is centered between the legs. 2. Place the included backing plate (if applicable) or flat washers on the threaded legs. 3. Securely fasten with the appropriate nuts, tightening them evenly to achieve firm but not overtightening pressure on the pipe.

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
Using the wrong U-bolt size for the pipe nominal diameter.Always verify the U-bolt's inside width (A) and inside length (B) against the actual pipe outside diameter and required clearance for the specific application.
Under-tightening the nuts, leading to potential pipe movement or loosening.Tighten nuts evenly and firmly, ensuring the U-bolt provides adequate support without deforming the pipe. Use a torque wrench if specific torque values are required by the application.
Using standard carbon steel U-bolts in corrosive environments.Select 316 stainless steel for marine, chemical, or high-humidity applications to prevent premature corrosion and failure.

Common Applications

  • Marine pipe and conduit support
  • Chemical processing equipment mounting
  • Food and beverage industry pipe securing
  • Wastewater treatment plant infrastructure
  • General structural pipe anchoring

⚠️ Engineering Warnings

  • Ensure all nuts and washers are of compatible material (e.g., 316 stainless steel) to prevent galvanic corrosion.
  • Do not exceed the load-bearing capacity of the U-bolt. Consult load charts if structural integrity is critical.

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 pipe and conduit support, Chemical processing equipment mounting, Food and beverage industry pipe securing, Wastewater treatment plant infrastructure, General structural pipe anchoring.

Technical Schematic

U-BOLT DIMENSIONAL DIAGRAMASME B18.31.5PIPE1"NUTNUTA = 3.44"B7.90"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.