1/4-20 x 1/2 Pozi Drive Alternative Type 1A Recess Pan Mach Scr Fully Thrd Zinc 1/4-28 NTE a 20 threads per inch

a 20 threads per inch pitch

They are designed to distribute the load of a fastener evenly over a surface

The black oxide finish provides superior corrosion resistance

and a length of 3/8 inch

The 5/16 Medium Split Lock Washer Zinc Yellow is a versatile and durable washer designed to prevent loosening in bolted connections

1/4-20 x 1/2 Pozi Drive Alternative Type 1A Recess Pan Mach Scr Fully Thrd Zinc 1/4-28 NTE a 20 threads per inchThis 1 4 20 x 1 2 Pozi Drive Alternative Type 1A Recess Pan Machine Screw is a fully threaded screw made of zinc. It has a Pozi drive, which is similar to a Phillips drive but has a more square shape. The Type 1A recess is a shallow recess with a slightly rounded bottom. This screw is designed for use in a variety of applications, including metalworking, woodworking, and plasticworking.