K041 has a 6.4mm slot
D176, D196, & D276 are all 8mm
K041 and A041 both have a 5/16" stud slot slot, as does the D176 and D276.
D196/D096/UXL/TXL has a 3/8" slot.
The A064 Frontier mount (like on the little bastard Skil/etc tophandles) and A061 (little Homelite XL/XL2/Super2/etc) have 6.4mm slots.