Part No. inch inch  L mm Be–Cu g  Al–Cu g
NS7-3/8” 3/8 1/4 26 22 20
NS7-1/4” 1/4 3/8 22 22 20
NS7-1/2” 1/4 3/8 34 80 70
NS7-3/8” 3/8 1/2 34 50 45
NS7-3/4” 3/4 1/2 55 290 260
NS7-1/2” 1/2 3/4 50 170 150
NS7-1” 1 3/4 70 855 770
NS7-3/4” 3/4 1 60 360 320
NS7-1-1/2” 1-1/2 1 85 1675 1510
NS7-1” 1 1-1/2 85 1230 1100