British Std Cycle
Size |
Outside Dia Inch |
Tpi |
Pitch Inch |
Core Dia Inch |
Radius Inch |
Thread Depth Thou |
Hex A/flats Inch |
Head Depth Inch |
Washer Face Dia Inch |
Std Nut Depth Inch |
Lock Nut Depth Inch |
Tapping Drill Size Inch |
Tapping Drill Size Mm |
Letter Or Number |
7 swg RH
|
0.056
|
56
|
0.018
|
0.037
|
0.003
|
10
|
|
|
|
|
|
0.039
|
1.0
|
61
|
7 swg RH
|
0.056
|
62
|
0.016
|
0.039
|
|
9
|
|
|
|
|
|
0.042
|
1.1
|
57
|
16 swg RH
|
0.064
|
56
|
0.018
|
0.039
|
0.003
|
10
|
|
|
|
|
|
0.039
|
1.0
|
61
|
16 swg RH
|
0.064
|
62
|
0.016
|
0.047
|
|
9
|
|
|
|
|
|
0.047
|
1.2
|
3/64
|
15 swg RH
|
0.072
|
56
|
0.018
|
0.055
|
0.003
|
10
|
|
|
|
|
|
0.055
|
1.4
|
54
|
15 swg RH
|
0.072
|
62
|
0.016
|
0.060
|
0.003
|
9
|
|
|
|
|
|
0.063
|
1.6
|
1/16
|
14 swg RH
|
0.080
|
56
|
0.018
|
0.061
|
0.003
|
10
|
|
|
|
|
|
0.063
|
1.6
|
1/16
|
14 swg RH
|
0.080
|
62
|
0.016
|
0.063
|
0.003
|
9
|
|
|
|
|
|
0.063
|
1.6
|
1/16
|
13 swg RH
|
0.092
|
56
|
0.018
|
0.073
|
0.003
|
10
|
|
|
|
|
|
0.075
|
1.9
|
48
|
12 swg RH
|
0.104
|
44
|
0.023
|
0.080
|
0.003
|
10
|
|
|
|
|
|
0.081
|
2.1
|
46
|
11 swg RH
|
0.116
|
44
|
0.023
|
0.095
|
0.003
|
12
|
|
|
|
|
|
0.096
|
2.5
|
41
|
1/8 RH
|
0.125
|
40
|
0.025
|
0.098
|
0.004
|
13
|
|
|
|
|
|
0.100
|
2.5
|
39
|
10 swg RH
|
0.128
|
44
|
0.023
|
0.104
|
0.004
|
12
|
|
|
|
|
|
0.106
|
2.7
|
36
|
9 swg RH
|
0.144
|
40
|
0.025
|
0.115
|
0.004
|
13
|
|
|
|
|
|
0.116
|
3.0
|
32
|
5/32 RH
|
0.156
|
32
|
0.031
|
0.123
|
0.005
|
17
|
|
|
|
|
|
0.129
|
3.2
|
30
|
8 swg RH
|
0.160
|
40
|
0.025
|
0.133
|
0.004
|
13
|
|
|
|
|
|
0.136
|
3.5
|
29
|
7 swg RH
|
0.177
|
32
|
0.031
|
0.143
|
0.005
|
17
|
|
|
|
|
|
0.144
|
3.7
|
27
|
3/16 RH
|
0.188
|
32
|
0.031
|
0.154
|
0.005
|
17
|
0.338
|
|
|
|
|
0.156
|
4.0
|
5/32
|
7/32 RH
|
0.219
|
26
|
0.039
|
0.178
|
0.006
|
21
|
|
|
|
|
|
0.180
|
4.6
|
15
|
1/4 RH
|
0.250
|
26
|
0.039
|
0.209
|
0.006
|
21
|
0.445
|
0.176
|
0.428
|
0.200
|
0.185
|
0.213
|
5.4
|
3
|
17/64 RH
|
0.266
|
26
|
0.039
|
0.225
|
0.006
|
21
|
|
|
|
|
|
0.228
|
5.8
|
1
|
9/32 RH
|
0.281
|
26
|
0.039
|
0.240
|
0.006
|
21
|
|
|
|
|
|
0.242
|
6.2
|
C
|
5/16 RH
|
0.313
|
26
|
0.039
|
0.272
|
0.006
|
21
|
0.525
|
0.218
|
0.508
|
0.250
|
0.210
|
0.275
|
7.0
|
J
|
3/8 RH
|
0.375
|
26
|
0.039
|
0.334
|
0.006
|
21
|
0.600
|
0.260
|
0.582
|
0.312
|
0.260
|
0.339
|
8.6
|
R
|
7/16 RH
|
0.438
|
26
|
0.039
|
0.397
|
0.006
|
21
|
0.710
|
0.302
|
0.690
|
0.375
|
0.275
|
0.397
|
10.1
|
X
|
7/16 RH
|
0.438
|
20
|
0.050
|
0.384
|
0.008
|
27
|
0.710
|
0.302
|
0.690
|
0.375
|
0.275
|
0.386
|
9.8
|
W
|
1/2 RH
|
0.500
|
26
|
0.039
|
0.459
|
0.006
|
21
|
0.820
|
0.343
|
0.800
|
0.437
|
0.300
|
0.469
|
11.7
|
15/32
|
1/2 RH
|
0.500
|
20
|
0.050
|
0.447
|
0.008
|
27
|
0.820
|
0.343
|
0.800
|
0.437
|
0.300
|
0.453
|
11.5
|
29/64
|
9/16 RH
|
0.563
|
26
|
0.039
|
0.522
|
0.006
|
21
|
0.900
|
0.375
|
0.900
|
0.500
|
0.333
|
0.531
|
13.3
|
17/32
|
9/16 RH
|
0.563
|
20
|
0.050
|
0.509
|
0.008
|
27
|
0.900
|
0.375
|
0.900
|
0.500
|
0.333
|
0.512
|
13.0
|
33/64
|
5/8 RH
|
0.625
|
26
|
0.039
|
0.584
|
0.006
|
21
|
1.010
|
0.417
|
0.985
|
0.562
|
0.375
|
0.591
|
15.0
|
19/32
|
5/8 RH
|
0.625
|
20
|
0.050
|
0.572
|
0.008
|
27
|
1.010
|
0.417
|
0.985
|
0.562
|
0.375
|
0.578
|
14.6
|
37/64
|
11/16 RH
|
0.688
|
26
|
0.039
|
0.647
|
0.006
|
21
|
|
|
|
|
|
0.650
|
16.5
|
21/32
|
11/16 RH
|
0.688
|
20
|
0.050
|
0.634
|
0.008
|
27
|
|
|
|
|
|
0.641
|
16.2
|
41/64
|
3/4 RH
|
0.750
|
26
|
0.039
|
0.709
|
0.006
|
21
|
1.200
|
0.500
|
1.175
|
0.687
|
0.458
|
0.712
|
18.1
|
23/32
|
3/4 RH
|
0.750
|
20
|
0.050
|
0.697
|
0.008
|
27
|
1.200
|
0.500
|
1.175
|
0.687
|
0.458
|
0.703
|
17.7
|
45/64
|
7/8 RH
|
0.875
|
24
|
0.042
|
0.831
|
0.007
|
22
|
1.300
|
0.583
|
1.273
|
0.750
|
0.500
|
0.837
|
21.1
|
27/32
|
31/32 RH
|
0.969
|
30
|
0.033
|
0.933
|
0.006
|
18
|
|
|
|
|
|
0.937
|
23.8
|
15/16
|
1 inch RH
|
1.000
|
24
|
0.042
|
0.956
|
0.007
|
22
|
1.480
|
0.666
|
1.453
|
0.875
|
0.583
|
0.969
|
24.3
|
31/32
|
1 inch RH
|
1.000
|
26
|
0.039
|
0.959
|
0.006
|
21
|
|
0.666
|
|
|
|
|
24.4
|
31/32
|
1 - 1/8 RH
|
1.125
|
26
|
0.039
|
1.084
|
0.006
|
21
|
1.670
|
0.750
|
1.620
|
1.000
|
0.666
|
1.094
|
27.6
|
1 - 3/32
|
1.29 LH
|
1.290
|
24
|
0.042
|
1.246
|
0.007
|
22
|
|
|
|
|
|
1.250
|
31.7
|
1 - 1/4
|
1 - 3/8 RH
|
1.370
|
24
|
0.042
|
1.326
|
0.007
|
22
|
2.050
|
0.920
|
1.985
|
1.250
|
0.833
|
1.328
|
33.7
|
1 - 21/64
|
1 - 3/8 LH
|
1.370
|
24
|
0.042
|
1.326
|
0.007
|
22
|
2.050
|
0.920
|
1.985
|
1.250
|
0.833
|
1.328
|
33.7
|
1 - 21.64
|
1.45 RH
|
1.450
|
26
|
0.039
|
1.409
|
0.006
|
21
|
2.220
|
1.000
|
2.155
|
1.375
|
0.916
|
1.422
|
35.8
|
1 - 27/64
|
1.45 LH
|
1.450
|
26
|
0.039
|
1.409
|
0.006
|
21
|
2.220
|
1.000
|
2.155
|
1.375
|
0.916
|
1.422
|
35.8
|
1 - 27/64
|
1 - 9/16 LH
|
1.562
|
24
|
0.042
|
1.518
|
0.007
|
22
|
|
|
|
|
|
1.531
|
38.6
|
1 - 17/32
|
1 - 5/8 RH
|
1.625
|
24
|
0.042
|
1.581
|
0.007
|
22
|
|
|
|
|
|
1.594
|
38.4
|
1 - 19/32
|