Home > Products & Standards > ASME B 18.6.3 - 2013 82° Dimensions of Slotted Oval Countersunk Head Tapping Screws [Table 7]

ASME B 18.6.3 - 2013 82° Dimensions of Slotted Oval Countersunk Head Tapping Screws [Table 7]


Unit: inch
美标ASME B18.6.3 - 2013 ASME18.6.3 18.6.3A 82° Dimensions of Slotted Oval Countersunk Head Tapping Screws [Table 7]
Thread Size
d
0# 1# 2# 3# 4# 5# 6# 7# 8# 10# 12#
d Nominal Size
Series ② Symbol
L ③ Type A & Type AB
Other Types
dk max
min
k Ref
f Ref.
n max
min
t max
min
0.0600 0.0730 0.0860 0.0990 0.1120 0.1250 0.1380 0.1510 0.1640 0.1900 0.2160
●◆▲ ●◆▲ ●◆▲■ ●◆▲■ ●◆▲■ ●◆▲■ ●◆▲■ ●◆▲ ●◆▲■ ●◆▲■ ●◆▲■
3/16 3/16 3/16 7/32 1/4 1/4 5/16 3/8 7/16 1/2 9/16
1/8 5/32 3/16 7/32 1/4 1/4 5/16 3/8 7/16 1/2 9/16
0.112 0.137 0.162 0.187 0.212 0.237 0.262 0.287 0.312 0.362 0.412
0.096 0.120 0.144 0.167 0.191 0.215 0.238 0.262 0.285 0.333 0.380
0.035 0.043 0.051 0.059 0.067 0.075 0.083 0.091 0.100 0.116 0.132
0.021 0.025 0.029 0.033 0.037 0.041 0.045 0.049 0.052 0.060 0.068
0.023 0.026 0.031 0.035 0.039 0.043 0.048 0.048 0.054 0.060 0.067
0.016 0.019 0.023 0.027 0.031 0.035 0.039 0.039 0.045 0.050 0.056
0.030 0.038 0.045 0.052 0.059 0.067 0.074 0.081 0.088 0.103 0.117
0.025 0.031 0.037 0.043 0.049 0.055 0.060 0.066 0.072 0.084 0.096
Thread Size
d
14# 1/4 16# 18# 5/16 20# 24# 3/8 7/16 1/2
d Nominal Size
Series ② Symbol
L ③ Type A & Type AB
Other Types
dk max
min
k Ref
f Ref.
n max
min
t max
min
0.2420 0.2500 0.2680 0.2940 0.3125 0.3200 0.3720 0.3750 0.4375 0.5000
◆ ●▲■ ◆ ◆ ●▲■ ◆ ◆ ▲■ ▲ ▲
5/8 5/8 3/4 13/16 13/16 13/16 1 / / /
/ 5/8 / / 5/8 / / 5/8 3/4 3/4
0.462 0.477 0.512 0.561 0.597 0.611 0.711 0.717 0.760 0.815
0.427 0.442 0.475 0.522 0.556 0.569 0.664 0.670 0.715 0.765
0.148 0.153 0.164 0.180 0.191 0.196 0.228 0.230 0.223 0.223
0.076 0.079 0.084 0.092 0.099 0.100 0.116 0.117 0.122 0.131
0.075 0.075 0.075 0.084 0.084 0.084 0.094 0.094 0.094 0.106
0.064 0.064 0.064 0.072 0.072 0.072 0.081 0.081 0.081 0.091
0.132 0.136 0.146 0.160 0.171 0.175 0.204 0.206 0.210 0.216
0.108 0.112 0.120 0.132 0.141 0.144 0.168 0.170 0.174 0.176
①,Edge of head may be rounded or flat.
②,● Type AB thread-forming , see table [Table 40]
◆ Type A thread-forming, see table [Table 42]
▲ Type B and BP thread forming, see table [Table 41]; Type BF and BT thread cutting, see table [Table 43]
■ Type C thread forming, see table [Table VI-1]; Type D, F, G and T thread cutting, see table [Table 44]; and Type TRS thread-rolling ,see table [Table 45]
③,Screws of these lengths and shorter shall have undercut heads. For tapping screws, use Type AB undercut head screws in place of Type A screws for these lengths and shorter.
Alternative history
ANSI/ASME B 18.6.3 - 2010 ANSI/ASME B 18.6.3 - 2013
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