1/4-28 x 7/8 Fine Thread Socket Head Cap Screw Black DFAR A563D The 1/4-20 x 4 1/2

The 1/4-20 x 4 1/2 Phillips Round Machine Screw Fully Threaded Zinc is a type of screw that is designed for use in a variety of applications

and are self-tapping

This 4-40 x 1/4 6-Lobe Pan Machine Screw is fully threaded and made of zinc

while the oil finish helps to prevent rust and seizing

ensuring a flush and professional-looking finish

1/4-28 x 7/8 Fine Thread Socket Head Cap Screw Black DFAR A563D The 1/4-20 x 4 1/21 4 28 x 7 8 Fine Thread Socket Head Cap Screw Black DFAR This 1 4 28 x 7 8 Fine Thread Socket Head Cap Screw is made of steel and has a black oxide finish. It is a DFAR compliant screw, meaning that it meets the requirements of the Defense Federal Acquisition Regulation Supplement. The screw has a socket head, which allows it to be driven with a hex key. It has a fine thread, which means that it has more threads per inch than a coarse thread screw.