M257A-12

Model Code
M257 UNO Porting
M257 BSPP Porting
M257 SAE C61 Split Flange Porting
M257 BSPT Porting
M257 NPT Porting
M257 Overrun Check
Model Code
M257 2 Bolt SAE 'B' Mount
M257 4 Bolt SAE 'B' Mount
M257 2/4 Bolt SAE 'B' Mount
M257 2 Bolt SAE 'C' Mount
M257 4 Bolt SAE 'C' Mount
M257 2/4 Bolt SAE 'C' Mount
Model Code
M257 7/8" 13 Tooth Spline Shaft
M257 1" 15 Tooth Spline Shaft
M257 1-1/4" 14 Tooth Spline Shaft
M257 1" Keyed Shaft
M257 1-1/4" Keyed Shaft