5/8-11 x 2 1/4 Coarse Thread Socket Head Cap Screw Black DFAR MPRB while the lobe pan head

while the lobe pan head offers a secure grip for driving

They have a full thread and a full contour truss head

and the unslotted indent hexwasher head provides a secure grip for tightening

The 10-24 x 5/8 Phillips Flat Taptite Alternative Thread Rolling Screw Fully Threaded Zinc & Wax is a versatile and durable screw designed for a wide range of applications

meaning it has a diameter of 4 mm and a thread pitch of 0

5/8-11 x 2 1/4 Coarse Thread Socket Head Cap Screw Black DFAR MPRB while the lobe pan headThe 5 8 11 x 2 1 4 Coarse Thread Socket Head Cap Screw Black DFAR is a high quality fastener designed to meet the demanding requirements of aerospace and defense applications. It is manufactured from alloy steel and features a black oxide finish for corrosion resistance. The coarse thread design provides a secure hold in a variety of materials, and the socket head allows for easy installation and removal. This screw meets the requirements of DFARS