Home > U-Bolts > 304 Stainless Steel U-Bolt, 4" Pipe

304 Stainless Steel U-Bolt for 4" Pipe | 1.22" W x 3.08" L

Expert Overview

Engineered for robust pipe securing, this 304 stainless steel U-bolt offers superior corrosion resistance and strength. Designed to fit 4" nominal pipe, it ensures reliable support in demanding industrial settings.

StandardISO 9001
Material304 Stainless Steel
FinishPlain
GradeN/A
Inside Width ( A)1.22"
Inside Length ( B)3.08"
Thread Size1/2"-13

Detailed Engineering Specifications

Purpose-built for heavy-duty applications, this U-bolt features a precise 1.22" inside width (A) and 3.08" inside length (B), specifically engineered for 4" nominal pipe (4.5" actual OD). Constructed from premium 304 stainless steel, it provides exceptional resistance to rust, oxidation, and chemical attack, making it ideal for marine, chemical processing, food and beverage, and outdoor environments where durability and hygiene are paramount. The robust 1/2"-13 UNC thread size ensures secure fastening with compatible nuts and washers, capable of withstanding significant tensile and shear loads to maintain structural integrity under dynamic 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."
Market Rank
🏆 Global Innovation Leader
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🌱 100% Renewable Energy HQ
Certified:ISO 9001, ISO 14001
LoctiteEst. 1953
Germany🇩🇪
"Industrial adhesives and sealants."
Market Rank
🏆 #1 Global Adhesives
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🚀 Formula 1 & Aerospace OEM
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🛡️ 24/7 Application Support
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🌱 Climate Positive 2030
Certified:ISO 9001, IATF 16949
McMaster-CarrEst. 1901
USA🇺🇸
"Complete industrial supply."
Market Rank
🏆 #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. Clean both the pipe surface and the U-bolt threads to ensure proper fit and torque. 2. Position the U-bolt around the 4" nominal pipe, ensuring the legs straddle the pipe evenly. 3. Secure the U-bolt by threading the 1/2"-13 nuts onto the legs, tightening them alternately and evenly to the specified torque to prevent pipe deformation and ensure uniform pressure.

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)18.0 - 20.0%
Nickel (Ni)8.0 - 10.5%
Manganese (Mn)2.00% max

Temperature & Environment Rating

Min Operating Temp
-320°F (-195°C)
Max Continuous Temp
1400°F (760°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 / SaltwaterGood
Chemical / AcidicNot Recommended

Common Mistakes & How to Avoid Them

❌ Mistake✅ Correct Approach
Using the wrong U-bolt size for the pipe nominal diameter.Always verify the actual outer diameter (OD) of the pipe and select a U-bolt with an inside width (A) that appropriately accommodates it (typically 1/4" to 1/2" larger than pipe OD for clearance).
Over-tightening or uneven tightening of the nuts.Tighten nuts alternately and evenly. Consult torque charts for the specific application and load requirements to avoid over-stressing the pipe or the U-bolt.
Using carbon steel U-bolts in corrosive environments.Select 304 or 316 stainless steel U-bolts for applications exposed to moisture, chemicals, or saltwater to prevent premature corrosion and failure.

Common Applications

  • Pipe support and anchoring in chemical plants
  • Marine and offshore structural pipe mounting
  • Food processing and pharmaceutical facilities requiring hygienic solutions
  • Wastewater treatment and plumbing systems
  • Automotive and heavy equipment exhaust system support

⚠️ Engineering Warnings

  • Ensure compatibility of mating hardware (nuts and washers) with 304 stainless steel to prevent galvanic corrosion.
  • Always adhere to local building codes and engineering specifications for critical structural support applications.
  • Avoid using abrasive cleaners or materials that can scratch the stainless steel surface, as this can compromise corrosion resistance.

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 304 Stainless Steel U-Bolt, 4" Pipe made from?

A: This 304 Stainless Steel U-Bolt, 4" Pipe is manufactured from 304 Stainless Steel.

Q: What are the main applications?

A: Pipe support and anchoring in chemical plants, Marine and offshore structural pipe mounting, Food processing and pharmaceutical facilities requiring hygienic solutions, Wastewater treatment and plumbing systems, Automotive and heavy equipment exhaust system support.

Technical Schematic

U-BOLT DIMENSIONAL DIAGRAMASME B18.31.5PIPE1"NUTNUTA = 1.22"B3.08"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.