This is cotterless, but suitable size and length for converting from cottered set-up. For converting old Raleigh cottered bottom brackets.
Raleigh Burner Bottom Bracket BMX Cup Set YST RBT130 Cotterless Large Shell -H
Raleigh Chopper MK1 MK2 Chainguard - Reproduction - Raleigh Chopper Bike
Pro Bamboo Kitchen 4pcs 14mm Crank Arm Nut M10 Bicycle Bottom Bracket Cotterless Crank Axle Threaded Nut
Ammaco Road Bike Alloy Chain Wheel set Double 52-42T Crank set Detachable Rings 170mm Cranks Cotterless Square Taper
Left Hand Crank Arm - BLACK - 175mm - ALLOY - Square Taper JIS Cotterless