The unusual shape of the piercing is designed to give point contacts on the sides of the square shaft, and extra flexibility gives a wide range of fitting, i.e. part 7023 is suitable for shafts from .300 to .312 with two slots to assist in location on assembly.
Please note that these product properties are not a replacement for the manufacturer's literature and it is always recommended that Baker & Finnemore is consulted before specifying.
Other
Uniclass (?)
Pr_30_36_08 Bolting
, latching and locking hardware