1/4-20 x 2 MS51957, NAS-1635 Phil Pan Machine Screw Coarse Full Thread 300 Series S/S DFAR MPF316 which means that it has

which means that it has a hexagonal recess in the head

The 1/4-20 x 2 Six Lobe Pan Floor Board Screw Type F Fully Threaded Black Phosphate is a versatile screw designed for use in a variety of applications

This 3/8 x 2 1/2 inch Slotted Indented Hex Washer Self Tapping Screw Type A Fully Threaded Zinc is a versatile and durable fastener designed for various applications

These 6-20 x 1/2" Type 25 Fully Threaded Zinc 6 Lobe Flat Thread Cutting Screws are designed for use in a variety of applications

With its 4-40 thread size

1/4-20 x 2 MS51957, NAS-1635 Phil Pan Machine Screw Coarse Full Thread 300 Series S/S DFAR MPF316 which means that it hasThe 1 4 20 x 2 MS51957, NAS 1635 Phil Pan Machine Screw Coarse Full Thread 300 Series S S DFAR is a type of screw that is used in a variety of applications. It is made of 300 series stainless steel, which makes it resistant to corrosion and rust. The screw has a pan head with a Phillips drive, and it is fully threaded. It meets the specifications of MS51957 and NAS 1635, and it is compliant with the DFAR (Defense Federal Acquisition Regulation