BIG-SERT Inch Steel Insert 3/8-16 X .520 Part # 53811
Big Sert Steel Insert 3/8-16 .520 Part #53811. Insert Length Inch is .520. Professional Thread Repair. TIME-SERT thread repair system the ultimate way to repair threads in stripped or damaged holes. This listing is for (1) ONE insert. Please note: The size of the insert refers to the inside diameter and thread pitch.