ANSI and SAE Shafts
Keyed Shafts
Shaft Code Shaft Diam Short Shaft Lngth Long Shaft Lngth Key Width SAE Ref
13-1 0.500 0.750 na .125 na
16-1 .625 .938 2.000 .156 A
22-1 .875 1.312 2.500 .250 B
25-1 1.000 1.500 2.750 .250 na
32-1 1.250 1.875 3.000 .312 C
38-1 1.500 2.125 3.250 .375 na
44-1 1.750 2.625 3.625 .437 D,E
Splined Shafts
Shaft Code Shaft Diam Shaft Length Spline Spec SAE Ref
13-4 1/2 .750 9T, 20/40 DP na
16-4 5/8 .938 9T, 16/32 DP A
22-4 7/8 1.312 13T, 16/32 DP B
25-4 1" 1.500 15T, 16/32 DP na
32-4 1 1/4 1.875 14T, 12/24 DP C
38-4 1 1/2 2.125 17T, 12/24 DP na
44-4 1 3/4 2.625 13T, 8/16 DP D,E
50-4 2" 3.125 15T, 8/16 DP na
Straight Shafts With Threads
Shaft Code Shaft Diam Str Shaft Length Thread Size Thread Length Key Width
13-2 .500 .750 3/8-24 .562 .125
16-2 .625 .938 1/2-20 .719 .156
22-2 .875 1.312 5/8-18 .906 .250
25-2 1.000 1.500 3/4-16 1.062 .250
32-2 1.250 1.875 1"-12 1.219 .312
38-2 1.500 2.125 1 1/8-12 1.375 .375
44-2 1.750 2.625 1 1/4-12 1.562 .437
Tapered Shafts With Threads
Shaft Code Shaft Diam Tprd Shaft Lgth Thrd Shaft Lgth Thread Size Key Width
13-3 .500 .688 .500 5/16-32 .125
16-3 .625 .688 .719 1/2-20 .156
22-3 .875 1.125 .906 5/8-18 .250
25-3 1.000 1.375 1.062 3/4-16 .250
32-3 1.250 1.375 1.219 1"-12 .312
38-3 1.500 1.875 1.375 1 1/8-12 .375
44-3 1.750 2.125 1.562 1 1/4-12 .437
50-3 2.000 2.875 1.562 1 1/4-12 .500