Thread Protector, 1/2 x 28 tpi, .630″ dia, 5/8″ Long, Black This .630 diameter thread protector 1/2×28 tpi thread is machined from US made steel to very high quality standards on CNC lathes. It is counter bored to accommodate barrels that are not undercut at the shoulder. And, it has a durable black oxide finish. – Thread is 1/2 x 28 tpi – Length is 5/8” – Outside diameter is .630” – Finished With a clean crisp knurl. – 100% Made in the USA! – Please confirm size before ordering. — E. Arthur Brown Company, Inc 4088 County Road 40 NW, Garfield, MN 56332

Thread Protector, 1/2 x 28 tpi, .740” dia, 5/8” Long, Black This .740 diameter thread protector 1/2×28 tpi thread is machined from US made steel to very high quality standards on CNC lathes. It is counter bored to accommodate barrels that are not undercut at the shoulder. And, it has a durable black oxide finish. – Thread is 1/2 x 28 tpi – Length is 5/8” – Outside diameter is .740” – Finished With a clean crisp knurl. – 100% Made in the USA! – Please confirm size before ordering. — E. Arthur Brown Company, Inc 4088 County Road 40 NW, Garfield, MN 56332