Slot
Cross recess
Hex socket
Square socket
Pozidriv recess
Round head
Raised countersunk head
Cheese
Straight-knurl
Reduced shank
Full thread
Plain washer
Large plain washer
Spring washer
Ex-teeth CSK washers
Ex-teeth washer
Q 221-1999
Type H cross recessed pan head tapping screw and large plain washer assemblies-type A-type C
Type H cross recessed pan head tapping screw and large plain washer assemblies-type A-type F