Interior hardware includes stainless thrust head and oval head countersunk screws of various lengths and stainless finishing washers for the oval head screws. Each size of screw and washer comes in either a pack of 25 or a pack of 50. A certificate of conformity to industry standards is available on request. Each pack of 25 screws sell for $3 and each pack of 25 washers sell for $6. Each pack of 50 screws sell for $5.50 and each pack of 50 washers sell for $11. Click on Interior Hardware to place your order.