1,677 slotted hex nut, showing 200, (click on any line for more information) Slotted hex nuts server a similar purpose to castle nuts, in that they have an end with slots, and are used with a cotter pin to lock a nut in a particular position on a threaded shaft (usually an axle). eBay Sponsored 303 Stainless Steel Shoulder Screw Plain Square nut size data table chart ansi/asme b18.2.2 Slotted hex nut size . Slotted nuts, also known as castellated nuts, have grooved heads that align with holes in the mated bolt to accept the insertion of a cotter pin, locking the nut in place. Ansi (inch) hex and jam nut size table chart. Slotted hex nuts server a similar purpose to castle nuts, in that they have an end with slots, and are used with a cotter pin to lock a nut in a particular position on a threaded shaft (usually an axle). Get contact details and address | id: At fmw fasteners, we carry a huge selection of slotted hex locknuts to help you deliver. Slotted nuts, also known as...