P refers to the head type is PAN head; A refers to the pointed tail teeth, B refers to the flat tail teeth, namely PA round head pointed mouth steel teeth, PB round head flat mouth steel teeth.
Self-tapping class:
◆Round head self-tapping screw PA
◆Round head flat tail self-tapping screw PB
◆Round head cutting tail self-tapping screw PT
◆Round head tape self-tapping screw PWA
◆Round head with flat tail self-tapping PWB
◆Self-tapping PWT with round head and medium-cut tail
◆ Countersunk head self-tapping screw KA
◆ Countersunk head flat tail self-tapping screw KB
◆ Countersunk head cutting tail self-tapping screw KT
◆Semi countersunk head tapping screw OA
◆Big head self-tapping screw BA
◆Big head flat tail self-tapping screw BB
◆Large flat head self-tapping screw TA
◆Large flat head flat tail self-tapping screw TB
◆Large flat head cutting tail self-tapping screw TT
◆Thin head self-tapping screw CA
◆Thin head flat tail self-tapping screw CB
◆Cup head inner hexagon self-tapping HA
◆Drywall Nails/Wallboard Nails/Fiber Nails
Machine wire:
◆Round head machine screw PM
◆Round head PWM screw
◆Large flat head machine screw TM
◆ Countersunk head machine screw KM
◆Half countersunk head machine screw OM
◆Big head machine screw BM
◆Thin head machine screw CM
◆Cup head machine screw HM
