Marlco push broach inch square first pass form a (6431-045/1)

These are for use with Second Pass broaches to achieve Form A (WDS 6431)
For Form B style of hole, use the second pass broaches only

B1 = Nominal size A/F and pilot dia. for Form A
B2 = Tolerance across flats
F = Approx. load per tooth cutting mild steel
L1 = Overall length of broach
L2 = Length of cut
P = Pitch of teeth
R = Number of broaches to cut Form A