Hex Head
Hex Washer Head
Click here to Request a quote.
![]() |
Machine Screws Tapping Screws Self Drilling Screws |
![]() |
| 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 |
Click here to Request a quote.
| 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 |
|
Click here to Request a quote.
| 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
Click here to Request a quote.
|
![]() |
|||||||||
| Type A – AB
Click here to Request a quote.
|
![]() |
| Type B, F, H-L 1, 25 and 23 Click here to Request a quote.
|
![]() |
| Type U
Click here to Request a quote.
|
![]() |
Wood Screws Click here toRequest a quote.
|
Click here to Request a quote.
| 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 | ||||
|
20 | 0.139 | 0.135 | 0.104 | 0.099 | 0.190 | — | ||
|
18 | 0.166 | 0.161 | 0.122 | 0.116 | 0.211 | — | ||
|
16 | 0.189 | 0.183 | 0.141 | 0.135 | 0.235 | 0.300 | ||
|
14 | 0.215 | 0.209 | 0.164 | 0.157 | — | 0.353 | ||
|
14 | 0.246 | 0.240 | 0.192 | 0.185 | — | 0.393 | ||











