Maintenance Pak kits are a collection of fasteners for practical use around the home or workplace. A machine screw is a fastening screw with a machine-cut thread throughout the length of its shank. Machine screws are used with nuts or screwed directly into a threaded receptacle to fasten various components together in machines, tools, etc. Fasten with a screwdriver to reduce risk of over-tightening and protect the screw and fastened material. If nuts are needed, use with nuts of the same finish and threading for proper fit. The length of a machine screw is measured from under the head to the point of the screw. Machine Screw sizes and quantities included in kit: #6-32 x 1/2 in. 30 EA, #6-32 x 3/4 in. 25 EA, #6-32 x 1 in. 15 EA, #8-32 x 1/2 in. 25 EA, #8-32 x 3/4 in. 20 EA, #8-32 x 1 in. 15 EA, #10-24 x 1/2 in. 25 EA, #10-24 x 1 in. 15 EA, #10-24 x 1-1/2 in. 4 EA, #10-32 x 1/2 in. 15 EA, #10-32 x 3/4 in. 15 EA, #10-32 x 1 in. 15 EA, 1/4 in. 20 x 3/4 in. 12 EA, 1/4 in. 20 x 1 in. 10 EA, 1/4 in. 20 x 1-1/2 in. 6 EA. Hex Nut sizes and quantities included in kit: #6-32 : 82 EA, #8-32 : 75 EA, #10-24: 75 EA, #10-32 : 60 EA. Flat Washer sizes and quantities included in kit: #6: 88 EA, #8: 85 EA, #10: 85 EA, 1/4 in: 35 EA. Split Lock Washer sizes and quantities included in kit: #6: 88 EA, #8: 85 EA, #10: 85 EA, 1/4 in: 35 EA.