On Friday 5/23 Fastener SuperStore will be closing at 5:00pm CT for the holiday weekend. Orders placed after 3pm CT will ship Tuesday 5/27. Happy Memorial Day!

Square Drive Machine Screws

We offer Square Drive Machine Screws in diameters from 4-40 through 1/4-20; in lengths of 1/4" through 3"; in steel with a zinc finish.