4-40 x 1/4 MS35275, Military Drilled Fillister MS Screw Coarse Thrd 300 Series S/S DFAR 5/16-18-2 The unslotted hex washer head

The unslotted hex washer head allows for easy installation using a hex key or socket wrench

and the Grade 5 rating indicates its strength and reliability

These 10-16 x 1 1/4" Square Drive Pan Self Tapping Screws Type AB are fully threaded and made of zinc-plated steel

The screw is also coated with wax to help prevent corrosion

The 1/4-20 x 2 Slotted Indented Hex Washer Head Machine Screw Fully Threaded Black Oxide is a versatile and durable fastener designed for a wide range of applications

4-40 x 1/4 MS35275, Military Drilled Fillister MS Screw Coarse Thrd 300 Series S/S DFAR 5/16-18-2 The unslotted hex washer head4 40 x 1 4 MS35275 is a military grade screw with a drilled fillister head and a coarse thread. It is made of 300 series stainless steel and meets the requirements of DFAR (Defense Federal Acquisition Regulation Supplement). The screw has a diameter of 4 40 and a length of 1 4 inch. It is designed for use in military applications where high strength and corrosion resistance are required.