1.Head type: bugle, wafer, pan, pan framing 2.Thread type: coarse thread, fine thread 3.Finish: black and grey phosphate 1.Head type: bugle, wafer, pan, pan framing2.Thread type: coarse thread, fine thread3.Finish: black and grey phosphate, yellow and white zinc plated4.Materil :SWRCH22A5.Drive: philips6.Diameter: M3.5, M3.9, M4.2, M4.8, M5.5#6, #7, #8, #9, #10,7.Length: 13mm-254mm(1/2"-10")8. ...