1/2″ x 20 UNF Thread Protector Blued

1/2″ x 20 UNF Thread Protector Blued

1/2″ x 20 UNF Thread Protector Blued. 1/2″ Thread Protector – Alloy

High quality blued thread protector for all popular silencer adaptors and barrels with a 1/2″ UNF male thread. Approx. 1cm long

1/2″ UNF = 20 TPI (threads per inch), this model won’t suit rifles with 1/2″ UNEF (28 TPI) threads.