Used on tk frigate 1a. 2b thread class right-hand 1.719" overall width 18 thread quantity per inch knurled coupling ring nickel surface treated angle type w/clamp unef thread series
Used on tk frigate 1a. 2b thread class right-hand 2.719" overall width 18 thread quantity per inch knurled coupling ring nickel surface treated angle type w/clamp unef thread series