Hex Washer Head Indented

Hex Washer Head Machine Screws Tapping Screws Self Drilling Screws

Nominal
Size

Width
Across
Flats

Width
Across
Corners

Height
of
Head

Diameter
of
Washer

Thickness
of
Washer

Width
of
Slot

Depth
of
Slot

Max.

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

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