2b thread class right-hand 2.719" overall length 18 thread quantity per inch sash chain, 6.000 in. lg; eye dia of 0.191 in. nickel surface treated unef thread series
2b thread class right-hand 2.719" overall length 18 thread quantity per inch sash chain, 6.000 in. lg; eye dia of 0.191 in. nickel surface treated unef thread series
2a thread class right-hand 2.719" overall length 20 thread quantity per inch sash chain, 6.000 in. lg; eye dia of 0.191 in. nickel surface treated unef thread series