8-40 Screws (#8-40 Screw Kit) 3 Different Lengths - 6mm length, #8-40 threads - 8mm length, #8-40 threads - 10mm length, #8-40 threads 2 Head Types - Standard Head - Oval Head Package Contents: Standard Head (Fillister Head) - 6 x #8-40 6mm length - 6 x #8-40 8mm length - 6 x #8-40 10mm length Oval Head - 6 x #8-40 6mm length - 6 x #8-40 8mm length - 6 x #8-40 10mm length Torx 15 (T15) Key Includes 18 #8-40 screws with a standard head (filister) screws, 3 set of 6 screws for the following lengths 6mm, 8mm and 10mm. Measure of these screws are of the thread part only, it does not count the head. Includes 18 8-40 screws with a oval head screws, 3 set of 6 screws for the following lengths 6mm, 8mm and 10mm. Measure of this screws are for the whole screw. Torx 15 (T15) Key Allen key All screws have a Torx 15 head All screws are Hardened Black Oxide All screws are Black Oxide Grade 12.9, providing high-strength, high-carbon steel suitable for military and aerospace applications. ***NOTE: This is a #8-40 thread screw set, please check with your manufacturer for specific thread size and leghts.