1、FORD WORLDWIDE FASTENER STANDARDDate: 1999-04-05Engineering Standards & 1 of 1 Printed copies are uncontrolled .Systems Engineering (ESSE)WB 303MACHINE SCREWS90 o COUNTERSUNK (FLAT HEAD)6 LOBE DRIVEPC 8.8 - THREAD CLASS 6gCATEGORY 020.060Dimensions in mmNominal Size M3 M4 M5 M6 M8Pitch 0.5 0.7 0.8 1
2、 1.25d k max 5.5 8.4 9.3 11.3 15.8min 5.2 8 8.9 10.9 15.4k max 1.65 2.7 2.7 3.3 4.65r max 0.8 1 1.3 1.5 2Driver Size T10 T20 T25 T30 T40L Tolerance FORD PART NUMBERS4 W5057005 +/- 0.24 W5057016 W505702 W5057108 +/- 0.29 W505703 W505711 W50572010 W505704 W505712 W505721 W50573012 W505705 W505713 W505
3、722 W50573114 +/- 0.35 W505714 W505723 W505732 W50574016 W505715 W505724 W505733 W50574120 W505725 W505734 W50574225 +/- 0.42 W505735 W50574330 W505736 W505744Thread: ISO 261 and 965Material & Performance: WA 950 - Property Class 8.8General Specifications: WB 900 (See Appendix D for recess requirements)Finish: WX 100Example Description:W 5 0 5 7 0 0 S 3 0 9 S C R E W M 3 X 4 F L A T C S K 8
