1", Star drive, US

US Fasteners

Self drilling star drive pan head sheet metal screw

Sheet metal screws

Screws with large threads for use in sheet metal sometimes also used in plastic, fiberglass or wood.
Star drive pan head machine screw

Machine screws

Screws with machine threads for use with a nut or in a tapped hole.
LoGrip roofing screw

Roofing screws

Screws designed to be used in metal roofing applications and are available in a variety of colors.
SimpsonĀ® Bugle head wood screws star

Deck screws & Timber screws

Screws for wood to wood fastening applications such as decks, docks and ledgers, etc.