Machine screws are often used for precision electronic parts, and sheet metal applications as well as plastic applications. Generally a smaller fastener, usually has a Phillips or slotted recess.
1.Material: carbon steel, stainless steel, brass, aluminum
2.Diameter:
-Machine Screws: #0 ~ #17 or M2 ~ M6.3
-Sems Screws: #2 ~ #5/16 or M2 ~ M8
3.Length:
-Machine Screws: 1/4~8" or 6mm ~ 200mm
-Sems Screws: 1/8" ~ 3" or 4mm ~ 80mm
-Standard: IFI, DIN, JIS, BS