The SAE 2 bolt mount and SAE 4 bolt mount dimensional information below will help identify which pump end is required for your mounting bracket. This information is SAE standard for all pump pilots and bolt circle dimensions from SAE AA 2 bolt to SAE F pump sizes. To ensure proper length of your mounting bracket, additional information regarding the length of the pump shaft from the pump mounting surface to shaft tip will be required. This information can be obtained from actual measurement of the pump, or from the manufacturers specifications. If a coupling is required, shaft diameter and keyway size will also need to be referenced.

 

SAE-2 BOLT MOUNT
Mounting Flange	Pilot Dimensions	Flange Dimensions
SAE	A	K	M
AA	2.000/1.998	3.255	0.406
		3.245
A	3.250/3.248	4.192	0.438
		4.182
B	4.000/3.998	5.755	0.562
		5.745
C	5.000/4.998	7.130	0.687
		7.120
D	6.000/5.998	9.005	0.812
		8.995
E	6.500/6.498	12.503	1.062
		12.495
F	7.000/6.998	13.786	1.062
		13.776