Boshart SS304P 304 Stainless Steel Cored Plug, ISO4144 Threaded Fitting

Boshart SS304P 304 Stainless Steel Cored Plug, ISO4144 Threaded Fitting

The Boshart SS304P is a 304 stainless steel cored plug built to the ISO4144 thread standard for use in stainless steel threaded piping systems. Available in sizes ranging from 1/4" through 1-1/2", this cored plug family gives plumbers and contractors a corrosion-resistant, threaded closure option for stainless steel pipe runs, rough-in assemblies, and process piping where standard carbon steel or brass components are not suitable. Manufactured in 304 stainless steel across the full size range, it resists rust and corrosion in demanding environments, making it a dependable choice for both residential and light industrial rough-in work. Every size in this family is sold in bulk carton packaging, well suited to contractors and distributors stocking stainless steel threaded fittings at volume.

Key Features

• Size Range: Available from 1/4" up to 1-1/2" to fit a wide range of stainless steel threaded pipe runs.
• Durable Construction: Manufactured from 304 stainless steel for strong corrosion resistance in threaded piping applications, across every size in the family.
• Thread Standard: Machined to the ISO4144 thread standard for compatibility with stainless steel threaded fitting systems, regardless of size selected.
• Cored Plug Design: Functions as a threaded closure/plug for capping off stainless steel threaded pipe runs and fittings.
• Installation Tip: Boshart recommends using Gray Stainless Steel PTFE Tape together with Gray Magic Pipe Thread Compound when joining stainless steel threaded fittings for a proper seal, on any size in this range.
• Bulk Packaging: Supplied in cartons, ideal for contractors and distributors stocking stainless steel rough-in components across multiple sizes.

Technical Specifications

• Size Range: 1/4" - 1-1/2"
• Material: 304 Stainless Steel
• Thread Standard: ISO4144
• Country of Origin: China
• Prop 65 Warning: No

Typical Applications

• Stainless Steel Threaded Pipe Systems
• Rough-In Plumbing Installations
• Corrosion-Resistant Piping Applications
• Commercial and Light Industrial Piping
• Distributor and Contractor Stock Replenishment

Why Boshart?

Boshart's SS304P cored plug family is built from 304 stainless steel to the ISO4144 thread standard across its full 1/4" to 1-1/2" size range, giving plumbers and contractors a reliable, corrosion-resistant option for stainless steel threaded piping systems. Combined with Boshart's recommended sealing method of Gray Stainless Steel PTFE Tape and Gray Magic Pipe Thread Compound, this cored plug supports proper installation practice for stainless steel threaded connections in any size. Stocked in bulk cartons, it's a practical option for professionals working with stainless steel rough-in components at volume.