5/8-18 x 1 1/4 Fine Thread Socket Head Cap Screw Black DFAR 5/16-18-3 It has a slotted drive

It has a slotted drive and a pan head

The 1/4-10 x 3/4 Unslotted Indented Hex Washer 3/8" Across The Flats F/T Self Piercing Screw Zinc is a type of screw that is designed for use in metal applications

12-11 x 5/8 Unslotted Indent Hexwasher Plastite Alternative 48-2 Full Thread Zinc & Wax

* Round washer head

- Shape: Square Round Washer

5/8-18 x 1 1/4 Fine Thread Socket Head Cap Screw Black DFAR 5/16-18-3 It has a slotted drive5 8 18 x 1 1 4 Fine Thread Socket Head Cap Screw Black DFAR: Black oxide finish for corrosion resistance Alloy steel for strength and durability Socket head for easy driving with an Allen wrench Fine thread for a secure hold in soft materials Meets DFAR requirements for use in military applications Dimensions: 5 8" diameter, 18 threads per inch, 1 1 4" length Commonly used in automotive, construction, and manufacturing industries