Self Drilling Screws

Hex Head
Hex Washer Head

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Hex Washer Head Screw Machine Screws
Tapping Screws
Self Drilling Screws
Hex Head Screw
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

 

Slotted Pan Head Screw Pan Head
Machine Screws
Tapping Screws
Self Drilling Screws
Phillips Pan Head Screw
SLOTTED PHILLIPS
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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

 

 

Wafer Head Screw Wafer Head
Self Drilling Screws
Self Drilling Screw

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Size A H R I
Head Diameter Head Hgt. Recess Diameter Recess Depth
Max. Min. Max. Min. Max. Min. Max Min.
10 .480 .450 .055 .045 .222 .208 .142 .137

 

Machine Screws

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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
Machine Screw

 

Type A – AB

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

 

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

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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 B,F,H-L,1,25,23 Screw

 

Type U

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

 

Wood Screws Click here toRequest a quote.

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
Wood Screw

 

Self-Drilling Screws Self Drilling Screw
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Nominal
Size or Basic
Screw Diameter
Threads
Per
Inch
T t P
Major Diameter Minor Diameter Protrusion
Allowance
Max. Min. Max. Min. #2 Pt. #3 Pt
6 0.1380
20 0.139 0.135 0.104 0.099 0.190
8 0.1640
18 0.166 0.161 0.122 0.116 0.211
10 0.1900
16 0.189 0.183 0.141 0.135 0.235 0.300
12 0.2160
14 0.215 0.209 0.164 0.157 0.353
1/4 0.2500
14 0.246 0.240 0.192 0.185 0.393