1、d! WORLDWIDE STANDARD l wEl900 APPENDIX B DATE: 1993 JANUARY Gauging of the Head of Countersunk Screw Head Products Figure Bl. Head configuration (in line with IS0 7721) dk THEORETICAL m dk THEORETICAL mi d ACTUAL mox t- II dk ACTUAL “it-4 I/ y L III t , I1 : E LL I E E Y Table Bl. T = Theoretical.
2、A = Actual Dimensions in mm PAGE lOF2 #jjji WORLDWIDE STAlVDARD , WB 900 APPENDIX B DATE: 1993 JANUARY Gauging of the Head of Countersunk Screw Head Products B2. Gauging method (in line with IS0 7721) FusmEss GAUGE FOR THE HEAD HEIGHT THE TOP SURFACE OF lHE SCREW HEAD MUST LIE BETWEEN GAUGE SURFACES
3、 A AND 6. Table Bl. RING GAUGE NO GO GAUGE FOR dk ACTUAL MN COMPRESSED GAUGING SCREW AND TOOTH WASHER LOCK WASHER ASSEMBLIES Dimensions in mm t II min. 1 2.64 1 3.2 1 3.8 1 4.3 F max. 0.2 0.2 0.25 0.25 min. 0.19 0.19 0.24 0.24 d, max. 4.4 5.2 6.9 8 min. 4.38 5.18 6.88 7.98 5.5 1 6.6 1 8.54 1 10.62 5.4 1 6.5 1 8.44 1 10.52 8.88 1 10.88 1 15.38 1 17.78 NOTE: Diameters da min. are bases on fillet radius r = 0.25d. PAGE 2 OF 2 - =i00=lLbCl 0053bCl L39 -
