Our bronze square head cored plugs come in a variety of sizes to accommodate your piping project. We offer threaded bronze square head core plugs in sizes from 1/8" to 4". We also offer a variety of stainless steel fittings. View our product line card. We have various bronze square head cored plug sizes to choose. Our pipe sizes and weights chart will help in your search for individual product specifications. Bronze square head cored plugs conform to ASTM B62-93 (85, 5, 5, 5) C83600. Dimensions ANSI B 16.15, Threads are ANSI B2.1 or BA21 and Fed. WW-P-460 UL/FM approved. View our standard specifications chart. View the various grades of Stainless Steel in our resource chart. View our Reference Catalog to help you select thousands of bronze or stainless steel pipe and tubing products from Shaw Stainless. This pipe catalog identifies bronze pipe plugs and other pipe fittings through specification charts and illustrations. Learn about theoretical bursting pressures for various stainless steel pipe. Bronze square head cored pipe plugs close the end of pipes. Bronze square head cored plugs are very similar to bronze pipe caps but plugs, are male threaded and fit inside the female end of the pipe. The square head allows for easy tightening or removal with a pipe wrench. It is called a cored plug because the inside of the fitting is cored out.