1-800-466-9780
1-800-466-9780

Thread Cutting Screws

Thread cutting screws, commonly used with items that require periodic maintenance, are a types of self-tapping screws that create new threads in holes. Typically used with wood or metal, thread cutting screws do not exert the same about of stress as like a thread forming screw does. 

Download all CHARTS TOGETHER

Flat Head

Machine Screws
Wood Screws *
Tapping Screws

Request Quote
Download Size Chart
Nominal Size A H J T M G N Phillips
Driver Size
Head Diameter Height of Head Width of Slot Depth of Slot Dimensions of Recess
Diameter Depth Width
Max. Min. Max. Min. Max. Min. Max. Min. Max. Min. Max. Min.
2
4
5
6
7*
8
9*
10
12
14*
1/4
5/16
3/8
1/2		 .172
.225
.252
.279
.305
.332
.358
.385
.438
.491
.507
.635
.762
.875		 147
.195
.220
.244
.268
.292
.316
.340
.389
.437
.452
.568
.685
775		 .051
.067
.075
.083
.091
.100
.108
.116
.132
.148
.153
.191
.230
.223		 .040
.055
.062
.069
.076
.084
.091
.098
.112
.127
.131
.165
.200
.198		 .031
.039
.043
.048
.048
.054
.054
.060
.067
.075
.075
.084
.094
.106		 .023
.031
.035
.039
.039
.045
.045
.050
.056
.064
.064
.072
.081
.091		 .023
.030
.034
.038
.041
.045
.049
.053
.060
.068
.070
.088
.106
.103		 .015
.020
.022
.024
.027
.029
.032
.034
.039
.044
.046
.058
.070
.065		 .102
.128
.154
.174
.182
.189
.258
.204
.268
.283
.283
.365
.393
.424		 .089
.115
.141
.161
.169
.176
.245
.191
.255
.270
.270
.352
.380
.411		 .063
.089
.086
.106
.114
.121
.146
.136
.156
.171
.171
.216
.245
.276		 .017
.018
.027
.029
.030
.031
.034
.032
.036
.039
.035
.061
.065
.069		 1
1
2
2
2
2
2
2-3*
3
3
3
4
4
4

Flat Head Torx® Drive

(Floorboard)

® Torx is a registered trademark of Camcar division of Textron Inds.

Request Quote
Download Size Chart
Screw
Size		 G T B F   Drive
Size
Head Dimensions Recess Dimension
Max. Sharp Abs. Min. Ref. Ref. Gauge
Penetration Mm.		 (Fallaway)
Max.
Penetration Of No-Go Gage
1/4 (.250)
5/16 (.312)
.507
.635		 .452
.566		 .153
.191		 .221
.266		 .060
.087		 .030
.030		 130
T40

Flat Head 100º

Machine Screws

Request Quote
Download Size Chart
Nominal
Size		 A H M G N Phillips
Driver
Size
Head Diameter Height
Of
Head
Ref.		 Dimensions of Recess
Max.
Edge
Sharp		 Min.
Edge
Rounded
or Flat		 Diameter Depth Width
Max. Min. Max. Min. Min.
4
6
8
10
14		 0.225
0.279
0.332
0.385
0.507		 0.191
0.238
0.285
0.333
0.442		 0.049
0.060
0.072
0.083
0.110		 0.117
0.154
0.169
0.184
0.247		 0.104
0.141
0.156
0.171
0.234		 0.078
0.086
0.101
0.116
0.135		 0.062
0.063
0.078
0.093
0.112		 0.018
0.027
0.028
0.030
0.033		 1
2
2
2
3

Hex Head

Hex Washer Head

Machine Screws
Tapping Screws
Self Drilling Screws

Request Quote
Download Size Chart
Nominal
Size		 A W H F U J T
Width
Across
Flats		 Width
Across
Corners		 Height
of
Head		 Diameter
of
Washer		 Thickness
of
Washer		 Width
of
Slot		 Depth
of
Slot
Max. Min. Min. Max. Min. Max. Min. Max. Min. Max. Min. Max. Min.
4
6
7
8
10
12
14
1/4
5/16
3/8		 .187
.250
.250
.250
.312
.312
.438
.375
.500
.562		 .181
.244
.244
.244
.305
.305
.428
.367
.489
.551		 .202
.272
.272
.272
.340
.340
.409
.409
.545
.614		 .060
.093
.093
.110
.120
.155
.190
.190
.230
.295		 .049
.080
.080
.096
.105
.139
.172
.172
.208
.270		 .243
.328
.328
.348
.414
.432
.520
.520
.676
.780		 .225
.302
.302
.322
.384
.398
.480
.480
.624
.720		 .019
.025
.029
.031
.031
.039
.050
.050
.055
.063		 .011
.015
.017
.019
.019
.022
.030
.030
.035
.037		 .039
.048
.048
.054
.060
.067
.075
.075
.084
.094		 .031
.039
.039
.045
.050
.056
.064
.064
.072
.081		 .042
.053
.062
.074
.080
.103
.111
.111
.134
.168		 .025
.033
.040
.052
.057
.077
.083
.083
100
.131

Oval Head

Machine Screws
Tapping Screws
Wood Screws*

Request Quote
Download Size Chart
Nominal
Size		 A H O J T M G N Phillips
Driver
Size
Head Diameter Height of Head Width of Slot Depth of Slot Dimensions of Recess
Side Height Total Height Diameter Depth Width
Max. Min. Max. Min. Max. Min. Max. Min. Max. Min. Max. Min. Max. Min.
4
5*
6
8
9*
10
12
14*
1/4		 .225
.252
.279
.332
.358
.385
.438
.491
.507		 .195
.220
.244
.292
.316
.340
.389
.452
.452		 .067
.075
.083
.100
.108
.116
.132
.148
.153		 .054
.062
.069
.084
.091
.098
.112
.127
.131		 .104
.116
.128
.152
.164
.176
.200
.224
.232		 .084
.095
.105
.126
.137
.148
.169
.190
.197		 .039
.043
.048
.054
.054
.060
.067
.075
.075		 .031
.035
.039
.045
.045
.050
.056
.064
.064		 .059
.067
.074
.088
.095
.103
.117
.132
.136		 .049
.055
.060
.072
.078
.084
.096
.108
.112		 .136
.158
.178
.192
.216
.209
.270
.305
.290		 .123
.145
.165
.179
.203
.196
.257
.292
.277		 .094
.085
.105
.119
.144
.137
.152
.188
.173		 .019
.028
.030
.031
.034
.033
.038
.042
.040		 1
2
2
2
2
2-3*
3
3
3

Pan Head

Machine Screws
Tapping Screws
Wood Screws*

Request Quote
Download Size Chart
Nominal
Size		 A H H1 J T M G N Phillips
Driver
Size
Head Diameter Height of Head Width of Slot Depth of Slot Dimensions of Recess
Slotted Recessed Diameter Depth Width
Max. Min. Max. Min. Max. Min. Max. Min. Max. Min. Max. Min. Max. Min.
2
3
4
5
6
7
8
10
12
1/4
5/16
3/8		 .167
.193
.219
.245
.270
.296
.322
.373
.425
.492
.615
.740		 .155
.180
.205
.231
.256
.281
.306
.357
.407
.473
.594
.716		 .053
.060
.068
.075
.082
.089
.096
.110
.125
.144
.178
.212		 .045
.051
.058
.065
.072
.079
.085
.099
.112
.130
.162
.195		 .062
.071
.080
.089
.097
.106
.115
.133
.151
.175
.218
.261		 .053
.062
.070
.079
.087
.096
.105
.122
.139
.162
.203
.244		 .031
.035
.039
.043
.048
.048
.054
.060
.067
.075
.084
.094		 .023
.027
.031
.035
.039
.039
.045
.050
.056
.064
.072
.081		 .031
.036
.040
.045
.050
.054
.058
.068
.077
.087
.106
.124		 .022
.026
.030
.034
.037
.041
.045
.053
.061
.070
.085
.100		 .104
.112
.122
.158
.166
.176
.182
.199
.259
.281
.350
.389		 .091
.099
.109
.145
.153
.163
.169
.186
.246
.268
.337
.376		 .059
.068
.078
.083
.091
.100
.108
.124
.141
.161
.193
.233		 .017
.019
.019
.028
.028
.029
.030
.031
.034
.036
.169
.210		 1
1
1
2
2
2
2
2
3
3
4
4

Threads For Self Tapping Screws

Type 25, Type B

Request Quote
Download Size Chart
Nominal Size or
Basic Screw Diameter		 Threads
per
Inch		 D d P S L
Major
Diameter		 Minor
Diameter		 Point
Diameter		 Point Taper Length Determinant
Length for
Point Taper		 Minimum Practical
Screw Length
For Short Screws For Long Screws
Max. Min. Max. Min. Max. Min. Max. Min. Max. Min. 90°
Heads		 Csk Heads 90°
Heads		 Csk Heads
2 0.0860
4 0.1120
6 0.1380
8 0.1640
10 0.1900
12 0.2160
14 0.2500
5/16 0.3125
3/8 0.3750
32
24
20
18
16
14
14
12
12		 0.088
0.114
0.139
0.166
0.189
0.215
0.246
0.315
0.380		 0.084
0.110
0.135
0.161
0.183
0.209
0.240
0.306
0.371		 0.064
0.086
0.104
0.122
0.141
0.164
0.192
0.244
0.309		 0.060
0.082
0.099
0.116
0.135
0.157
0.185
0.236
0.299		 0.058
0.079
0.095
0.112
0.130
0.152
0.179
0.230
0.293		 0.054
0.074
0.089
0.106
0.123
0.145
0.171
0.222
0.285		 0.062
0.083
0.100
0.111
0.125
0.143
0.143
0.167
0.167		 0.047
0.063
0.075
0.083
0.094
0.107
0.107
0.125
0.125		 0.078
0.104
0.125
0.139
0.156
0.179
0.179
0.196
0.196		 0.062
0.083
0.100
0.111
0.125
0.143
0.143
0.161
0.161		 7/64
3/16
1/4
5/16
3/8
7/16
1/2
15/32
17/32		 3/16
1/4
5/16
7/16
1/2
9/16
5/8
19/32
11/16		 7/64
9/64
11/64
3/16
15/64
9/32
9/32
27/32
15/16		 5/32
3/16
1/4
1/4
5/16
3/8
3/8
31/32
1 1/8

Threads and Points for Thread Cutting Screws and Self-Tapping Screws

Request Quote
Download Size Chart
Nominal Size or
Basic Screw Diameter		 Threads
per
Inch		 D P S L
Major
Diameter		 Point
Diameter		 Point Taper Length Determinant
Length for
Point Taper		 Minimum Practical
Screw Length
For Short Screws For Long Screws
Max. Min. Max. Min. Max. Min. Max. Min. 90°
Heads		 Csk Heads 90°
Heads		 Csk Heads
2 0.0860
4 0.1120
6 0.1380
56
40
32		 0.0860
0.1120
0.1380		 0.0813
0.1061
0.1312		 0.068
0.087
0.107		 0.061
0.078
0.096		 0.062
0.088
0.109		 0.045
0.062
0.078		 0.080
0.112
0.141		 0.062
0.088
0.109		 5/32
7/32
1/4		 3/16
1/4
5/16		 5/32
3/16
1/4		 3/16
1/4
5/16
8 0.1640
10 0.1900
10 0.19000
32
24
32		 0.1640
0.1900
0.1900		 0.1571
0.1818
0.1831		 0.132
0.148
0.158		 0.122
0.135
0.148		 0.109
0.146
0.109		 0.078
0.104
0.078		 0.141
0.188
0.141		 0.109
0.146
0.109		 1/4
11/32
1/4		 11/32
7/16
11/32		 1/4
5/16
1/4		 5/16
13/32
5/16
12 0.2160
14 0.2500
5/16 0.3125
3/8 0.3750
24
20
18
16		 0.2160
0.2500
0.3125
0.3750		 0.2078
0.2408
0.3026
0.3643		 0.174
0.200
0.257
0.312		 0.161
0.184
0.239
0.293		 0.146
0.175
0.194
0.219		 0.104
0.125
0.139
0.156		 0.188
0.225
0.250
0.281		 0.146
0.175
0.194
0.219		 11/32
13/32
15/32
1/2		 7/16
17/32
19/32
11/16		 5/16
3/8
7/16
15/32		 13/32
1/2
9/16
5/8

Machine Screws

Request Quote
Download Size Chart
Nominal Screw Size O thru l2 1/4 thru 3/4
Nominal Screw Length Tolerance on Length
Up to 1/2 in., Incl.
Over 1/2 to 1 in., Incl.
Over 1 to 2 in., Incl.
Over 2 in.		 -0.02
-0.03
-0.06
-0.09		 -0.03
-0.03
-0.06
-0.09

Type A – AB

Nominal Screw Length Tolerance on Length
Up to 1 in., Incl.
Over 1 in.		 + 0.03
+ 0.05

Type B, F, H-L 1, 25 and 23

Nominal Screw Length Tolerance on Length
Up to 3/4 in., Incl.
Over 3/4 to 1-1/2 in., Incl.		 – 0.03
– 0.05

Type U

Nominal Screw Length Tolerance on Length
Up to 3/8 in., Incl.
Over 3/8 in.		 + 0.02
+ 0.03

Wood Screws

Nominal Screw Length Tolerance on Length
Up to 5/8in., Incl.
Over 5/8 to l-1/2 in., Incl.
Over l-1/2 to 2-3/4 in., Incl.
Over 2-3/4 to 5 in., Incl.		 -0.03
-0.05
-0.06
-0.09

Request a Quote

Contact Us