S-4548K313 0.493" ID x 43/64" OD x 4 1/2" Long ASTM A733, ASME B1.20.1 Standard-Wall Stainless Steel Threaded Pipe Nipples and Pipe

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316/316L stainless steel construction for extended service life in harsh chemical and marine environments
• Exceptional structural integrity from seamless manufacturing that eliminates weak points and prevents leakage under pressure
• Reliable pressure handling with Schedule 40 wall thickness (0.091") maintaining system safety with air, oil, gas, and steam applications
• Precision threading compatibility featuring NPT threads on both ends that ensure leak-tight connections with standard fittings
• Reduced maintenance costs through RoHS 3 compliance and 316/316L material that resists oxidation and chemical degradation
• Industry-standard compliance meeting ASTM A733 and ASME B1.20.1 specifications for consistent quality and interchangeability
• Versatile fluid handling suitable for multiple media including water, natural gas, oil, and steam with Class 150 pressure rating

Professional Applications & Engineering Value

This 3/8" Schedule 40 stainless steel threaded pipe nipple delivers critical performance where corrosion resistance and pressure integrity matter most. The seamless 316/316L construction eliminates weld weaknesses that commonly fail in chemical processing, marine, and industrial piping systems. With NPT threading on both ends, installers achieve reliable, leak-resistant connections in compressed air lines, steam distribution, and hydrocarbon transfer applications. The combination of ASTM A733 compliance and ASME B1.20.1 thread standards ensures precise dimensional accuracy that prevents cross-threading and reduces installation time. Engineers specify this heavy-duty pipe nipple for its demonstrated performance in maintaining system integrity where thermal cycling, pressure fluctuations, and corrosive media would degrade ordinary fittings.

Specification Summary & Compliance

This 4 1/2" male threaded pipe nipple features precision NPT threads manufactured to ASME B1.20.1 specifications with standard Class 2A tolerances for consistent engagement. The Schedule 40 pipe maintains 0.493" ID and 43/64" OD dimensions with 0.091" wall thickness per industry standards. Manufacturing and material compliance includes ASTM A733 for seamless stainless steel pipe, with full RoHS 3 (2015/863/EU) compliance ensuring environmental safety. The fitting is rated for Class 150 service across all compatible flange and fitting materials.