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

316 Stainless Steel U-Bolt - 4" Pipe - 3.45" W x 4.81" L

Expert Overview

Engineered for robust support, this 316 stainless steel U-bolt provides secure fastening for 4" pipes. Its superior corrosion resistance ensures long-term performance in harsh industrial and marine settings.

StandardISO 9001
Material316 Stainless Steel
FinishPlain
GradeN/A
Inside Width ( A)3.45"
Inside Length ( B)4.81"
Thread Size1/2"-13

Detailed Engineering Specifications

Purpose-built for heavy-duty applications, this U-bolt features a 3.45-inch inside width (A) and a 4.81-inch inside length (B), specifically designed to accommodate 4-inch nominal pipe. Constructed from premium 316 stainless steel, it offers exceptional resistance to corrosion, pitting, and crevice attack, even in chloride-rich environments. The 1/2"-13 UNC thread size ensures a strong, reliable connection when paired with appropriate nuts and washers. Ideal for marine hardware, plumbing systems, exhaust supports, and structural framework where material integrity is paramount.

🧊 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."
Market Rank
🏆 Global Innovation Leader
Industry Approvals
🚀 Aviation & Medical Approved
Warranty & Support
🛡️ Premium Performance Guarantee
Green Manufacturing
🌱 100% Renewable Energy HQ
Certified:ISO 9001, ISO 14001
LoctiteEst. 1953
Germany🇩🇪
"Industrial adhesives and sealants."
Market Rank
🏆 #1 Global Adhesives
Industry Approvals
🚀 Formula 1 & Aerospace OEM
Warranty & Support
🛡️ 24/7 Application Support
Green Manufacturing
🌱 Climate Positive 2030
Certified:ISO 9001, IATF 16949
McMaster-CarrEst. 1901
USA🇺🇸
"Complete industrial supply."
Market Rank
🏆 #1 Industrial Supply Standard
Industry Approvals
🚀 US Military Approved
Warranty & Support
🛡️ 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 and the supporting structure. 2. Thread the appropriate 1/2"-13 nuts onto the bolt legs, ensuring even engagement. 3. Tighten nuts incrementally and alternately to achieve uniform pressure and secure the pipe without over-compression.

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 size U-bolt for the pipe diameter.Verify the pipe's nominal outer diameter and select a U-bolt with an inside width that accommodates it with a slight clearance for the threads.
Over-tightening nuts, which can deform the pipe or damage the threads.Tighten nuts firmly to secure the pipe, but avoid excessive force that could cause structural compromise.
Using carbon steel nuts and washers with a stainless steel U-bolt in corrosive environments.Always use 316 stainless steel nuts and washers to prevent galvanic corrosion and maintain the integrity of the fastening system.

Common Applications

  • Marine hardware and boat rigging
  • Industrial pipe support systems
  • Exhaust system mounting
  • Structural framework and conduit clamping
  • Plumbing and water treatment facilities

⚠️ Engineering Warnings

  • Ensure proper thread engagement with matching nuts and washers to achieve rated load capacity.
  • For environments with extreme chemical exposure, consult material compatibility charts for 316 stainless steel.

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 boat rigging, Industrial pipe support systems, Exhaust system mounting, Structural framework and conduit clamping, Plumbing and water treatment facilities.

Technical Schematic

U-BOLT DIMENSIONAL DIAGRAMASME B18.31.5PIPE1"NUTNUTA = 3.45"B4.81"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.