1、 WORLDWIDE FASTENER STANDARD Date: 2002-11-01 Global Materials & 1 of 1 Printed copies are uncontrolled. Fastener Standards (GM&FS) WB 203 BOLT RAISED HEAD - 90oCOUNTERSUNK (OVAL) 6 LOBE DRIVE PC 8.8 - THREAD CLASS 6g CATEGORY 020.040 Dimensions in mm Nominal Size M3 M4 M5 M6 M8 Pitch 0.5 0.7 0.8 1
2、1.25 dkmax 5.5 8.4 9.3 11.3 15.8 min 5.2 8 8.9 10.9 15.4 f ref 0.7 1 1.2 1.4 2 k max 1.65 2.7 2.7 3.3 4.65 r max 0.8 1 1.3 1.5 2 Driver Size T10 T20 T25 T30 T40 L Tolerance FORD PART NUMBERS 4 W505600 5 +/- 0.24 W505601 6 W505602 W505610 8 +/- 0.29 W505603 W505611 W505620 10 W505604 W505612 W505621
3、W505630 12 W505605 W505613 W505622 W505631 14 +/- 0.35 W505614 W505623 W505632 W505640 16 W505615 W505624 W505633 W505641 20 W505625 W505634 W505642 25 +/- 0.42 W505626 W505635 W505643 30 W505644 Thread: ISO 261 and 965 Material & Performance: WA 950 - Property Class 8.8 General Specifications: WB 900 (See Appendix D for recess requirements) Finish: WX 100 Example Description: W 5 0 5 6 0 0 B O L T M 3 X 4 R C T I 8 M3 Sizes Not to be used for new designs
