MACHINE SCREWS AND NUTS Table 12. Slotted Round Head Machine Screws ANSI/ASME B18.6.3-2013 Appendix Machinery's Handbook, 31st Edition
1784
J T
A
H
L
Head Height, H
Slot Width, J
Slot Depth, T
Head Diameter, A
Nominal Size a or Basic Screw Dia.
Max. .041 .062 .089 .113 .138 .162 .187
Min. .035 .056 .080 .099 .122 .146 .169 .193 .217 .240 .264 .287 .334 .382 .429 .443 .476 .523 .557 .570 .664 .670 .707 .766 .887 .944 1.185
Max. .022 .031 .045 .053 .061 .069 .078
Min. .016 .025 .036 .043 .051 .059 .067 .075 .083 .091 .099 .107 .123 .139 .155 .160 .171 .187 .198 .203 .235 .237 .307 .332 .385 .411 .516
Max. .008 .012 .017 .023 .026 .031 .035
Min. .004 .008 .010 .016 .019 .023 .027 .031 .035 .039 .039 .045 .050 .056 .064 .064 .064 .072 .072 .072 .081 .081 .081 .091 .102 .116 .131
Max. .017 .018 .026 .039 .044 .048 .053
Min. .013 .012 .018 .029 .033 .037 .040 .044 .047 .051 .055 .058 .065 .073 .080 .082 .087 .094 .099 .101 .116 .117 .148 .159 .183 .195
0000 000
0.0210 0.0340 0.0470 0.0600 0.0730 0.0860 0.0990 0.1120 0.1250 0.1380 0.1510 0.1640 0.1900 0.2160 0.2420 0.2500 0.2680 0.2940 0.3125 0.3200 0.3720 0.3750 0.4375 0.5000 0.5625 0.6250 0.7500
00
0 1 2 3 4 5 6 7 8
.211 .236 .260 .285 .309 .359 .408 .457 .472 .506 .555 .590 .604 .702 .708 .750
.086 .095 .103 .111 .120 .137 .153 .170 .175 .187 .204 .216 .220 .254 .256 .328 .355 .410 .438 .547
.039 .043 .048 .048 .054 .060 .067 .075 .075 .075 .084 .084 .084 .094 .094 .094 .106 .118 .133 .149
.058 .063 .068 .072 .077 .087 .096 .106 .109 .115 .125 .132 .134 .154 .155 .196 .211 .242 .258 .320
10 12 14 1 / 4
16 18 5 / 16 20 24 3 / 8 7 / 16 1 / 2 9 / 16 5 / 8 3 / 4
.813 .938 1.000 1.250
.242 a When specifying nominal size in decimals, zeros preceding decimal point and in the fourth decimal place are omitted. All dimensions are in inches. Not recommended, use Pan Head machine screws. Machine Screw Cross Recesses.— Four cross recesses, Types I, IA, II, and III, may be used in lieu of slots in machine screw heads. Dimensions for recess diameter M , width N , and depth T (not shown above) together with recess penetration gaging depths are given in American National Standard ANSI/ASME B18.6.3-2013 for machine screws, and in ANSI/ASME B18.6.7M-1999 (Withdrawn) for metric machine screws. ANSI/ASME Cross Recesses for Machine Screws and Metric Machine Screw
M
M
M
N
N
N
M
Type I Cross Recess Type IA Cross Recess Type II Cross Recess Type III Square Center
Copyright 2020, Industrial Press, Inc.
ebooks.industrialpress.com
Made with FlippingBook - Share PDF online