Machinery's Handbook, 31st Edition
1780
MACHINE SCREWS AND NUTS Table 6. American National Standard Slotted Pan Head Machine Screws ANSI/ASME B18.6.3-2013
J T
R
A
H
L
Head Dia., A
Head Height, H
Head Radius, R
Slot Width, J
Slot Depth, T
Nominal Size a or Basic Screw Dia.
Max. .042 .066 .090 .116 .142 .167 .193 .219 .245 .270 .296 .322 .373 .425 .476 .492 .528 .579 .615 .631 .734 .740 .863 .987 1.041 1.172 1.435
Min. .036 .060 .082 .104 .130 .155 .180 .205 .231 .256 .281 .306 .357 .407 .457 .473 .508 .558 .594 .608 .709 .716 .837 .958 1.000 1.125 1.375
Max. .016 .023 .032 .039 .046 .053 .060 .068 .075 .082 .089 .096 .110 .125 .139 .144 .153 .168 .178 .182 .211 .212 .247 .281 .315 .350 .419
Min. .010 .017 .025 .031 .038 .045 .051 .058 .065 .072 .079 .085 .099 .112 .126 .130 .139 .153 .162 .166 .193 .195 .228 .260 .293 .325 .390
Max. .007 .010 .015 .020 .025 .035 .037 .042 .044 .046 .049 .052 .061 .078 .087 .087 .094 .099 .099 .121 .143 .143 .153 .175 .197 .219 .263
Max. .008 .012 .017 .023 .026 .031 .035 .039 .043 .048 .048 .054 .060 .067 .075 .075 .075 .084 .084 .084 .094 .094 .094 .106 .118 .133 .149
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.
Min.
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
.008 .004 .012 .008 .016 .010 .022 .014 .027 .018 .031 .022 .036 .026 .040 .030 .045 .034 .050 .037 .054 .041 .058 .045 .068 .053 .077 .061 .085 .068 .087 .070 .093 .074 .100 .080 .106 .085 .108 .087 .123 .100 .124 .100 .142 .116 .161 .131 .179 .146 .197 .162
00
0 1 2 3 4 5 6 7 8
10 12 14 1 / 4 16 18 5 / 16 20 24 3 / 8 7 / 16 1 / 2 9 / 16 5 / 8 3 / 4
.234 .192 a Where specifying nominal size in decimals, zeros preceding decimal and in the fourth decimal place are omitted. All dimensions are in inches. Table 7. Nos. 0000, 000 and 00 Threads ANSI/ASME B18.6.3-2013 Appendix Nominal Size a and External b Internal c
Major Diameter
Pitch Diameter
Pitch Diameter
Major Dia. Min. .0210
Minor Dia.
Threads Per Inch
Max. Min. Max. Min. Tol.
Min. Max. Tol.
0000-160 or 0.0210-160 000-120 or 0.0340-120 00-90 or 0.0470-90 00-96 or 0.0470-96
NS 2 .0210 .0195 .0169 .0158 .0011 .0128 2 .0169 .0181 .0012
NS 2 .0340 .0325 .0286 0.272 .0014 .0232 2 .0286 .0300 .0014
.034
NS 2 .0470 .0450 .0398 .0382 .0016 .0326 2 .0398 .0414 .0016
.047
NS 2 .0470 .0450 .0402 .0386 .0016 .0334 2 .0402 .0418 .0016 .047 a Where specifying nominal size in decimals, zeros preceding decimal and in the fourth decimal place are omitted. b There is no allowance provided on the external threads. c The minor diameter limits for internal threads are not specified, they being determined by the amount of thread engagement necessary to satisfy the strength requirements and tapping performance in the intended application. All dimensions are in inches.
Copyright 2020, Industrial Press, Inc.
ebooks.industrialpress.com
Made with FlippingBook - Share PDF online