Simpson Strong-Tie Washer Drive Pin 72mm Pack of 100 SKU: 327351 MODEL: PDPAW-287 Error. try again later You've successfully joined the club $ 48 .60 pack of 100 Mitre 10 SAvailable at selected stores. Check your local store for details Variants 72mm loose washer drive pin for powder actuated fasteners. Features and benefits 72mm long. 3.98mm shank. 7.6mm flat head. 19mm washer.