Asc 8700159158 Black Iron Square Head Pipe Plug 1/4 in

Product Description

The ASC ENGINEERED SOLUTIONS 8700159158 is a 1/4 inch malleable black iron square head pipe plug designed to seal threaded pipe openings in piping systems. The hollow core design keeps weight low while maintaining structural integrity for standard-pressure applications. Weighing just 0.03 pounds, this plug is sold individually and meets Federal Specification WW-P-471-B, ANSI B-16.14 for dimensions, and ANSI B-2.1 for pipe threads. Plumbers, pipefitters, and mechanical contractors install these plugs to cap unused threaded ports on fittings, manifolds, valves, and distribution headers.

This plug is suited for residential and light commercial plumbing and piping applications where a threaded NPT port needs to be sealed off. The square head drive makes it compatible with standard open-end or box-end wrenches, which is practical in tight installation spaces. It is commonly used in gas, water, and steam distribution piping where malleable iron fittings are the specified material.

Key Features

• Malleable black iron construction for durability in threaded pipe systems
• Square head drive accepts standard wrench without need for a socket or specialty tool
Hollow core design reduces material weight while meeting dimensional standards
• Meets Fed. Spec. WW-P-471-B, ANSI B-16.14 dimensional standards, and ANSI B-2.1 pipe thread specifications
• 1/4 inch NPT thread size for common small-port sealing applications
• Sold individually — minimum order quantity of 20 units

Compatibility

Designed as an OEM-style replacement or standard fitting for threaded malleable iron piping systems using 1/4 inch NPT connections, conforming to ANSI B-16.14 and ANSI B-2.1 specifications.

Installation Notes

Installation should be performed by a licensed plumber or pipefitter following applicable local mechanical and plumbing codes. Shut off and depressurize the system before removing or installing any threaded plug. Apply thread sealant or PTFE tape to the male threads per job specifications before seating the plug. Do not overtighten, as malleable iron threads can be damaged by excessive torque.