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FASTENERS
DIMENSIONAL DATA
Holo-Krome Socket Head Shoulder Screws |
HOLO-KROME
SOCKET
HEAD
SHOULDER
SCREWS
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Dimensions in inches
NOMINAL
SIZE
OR BASIC
SHOULDER
DIAMETER |
D |
A |
H |
S |
J
|
T |
M |
R |
SHOULDER
DIAMETER |
HEAD
DIAMETER |
HEAD
HEIGHT |
HEAD
SIDE
HEIGHT
|
HEXAGON
SOCKET
SIZE |
KEY
ENGAGE-
MENT |
HEAD
FILLET
EXTENSION
ABOVE D |
HEAD
FILLET
RADIUS |
| MAX |
MIN. |
MAX. |
MIN. |
MAX.
|
MIN. |
MIN. |
NOM. |
MIN. |
MAX. |
MIN. |
| 1/4 |
0.250 |
0.2480 |
0.2460 |
0.375 |
0.357 |
0.188 |
0.177 |
0.157 |
1/8 |
.0125 |
0.094 |
0.014 |
0.009 |
| 5/16 |
0.312 |
0.3105 |
0.3085 |
0.438 |
0.419 |
0.219 |
0.209 |
0.183 |
5/32 |
0.156 |
0.117 |
0.017 |
0.012 |
| 3/8 |
0.375 |
0.3730 |
0.3710 |
0.562 |
0.543 |
0.250 |
0.240 |
0.209 |
3/16 |
0.188 |
0.141 |
0.020 |
0.015 |
| 1/2 |
0.500 |
0.4980 |
0.4960 |
0.750 |
0.729 |
0.312 |
0.302 |
0.262 |
1/4 |
0.250 |
0.188 |
0.026 |
0.020 |
| 5/8 |
0.625 |
0.6230 |
0.6210 |
0.875 |
0.853 |
0.375 |
0.365 |
0.315 |
5/16 |
0.312 |
0.234 |
0.032 |
0.024 |
| 3/4 |
0.750 |
0.7480 |
0.7460. |
1.000 |
0.977 |
0.500 |
0.490 |
0.421 |
3/8 |
0.375 |
0.281 |
0.039 |
0.030 |
| 1 |
1.000 |
0.9980 |
0.9960 |
1.312 |
1.287 |
0.625 |
0.610 |
0.527 |
1/2 |
0.500 |
0.375 |
0.050 |
0.404 |
DIMENSIONS CONTINUED:
NOMINAL
SIZE
OR BASIC
SHOULDER
DIAMETER |
K |
F |
D |
THREADS
PER INCH |
G
|
I |
N |
E
(3) |
SHOULDER
NECK
DIAMETER |
SHOULDER
NECK
WIDTH |
NOMINAL
THREAD SIZE OR BASIC
THREAD DIAMETER |
THREAD
NECK
DIAMETER |
THREAD
NECK
WIDTH |
THREAD
NECK FILLET |
THREAD
LENGTH |
| MIN. |
MAX. |
MAX. |
MIN. |
MAX. |
MAX.
|
MIN. |
BASIC |
| 1/4 |
0.250 |
0.277 |
0.093 |
10 |
0.1900 |
24 |
0.142 |
0.133 |
0.083 |
0.023 |
0.017 |
0.375 |
| 5/16 |
0.312 |
0.289 |
0.093 |
1/4 |
0.2500 |
20 |
0.193 |
0.182 |
0.100 |
0.028 |
0.022 |
0.438 |
| 3/8 |
0.375 |
0.352 |
0.093 |
5/16 |
0.3125 |
18 |
0.249 |
0.237 |
0.111 |
0.031 |
0.025 |
0.500 |
| 1/2 |
0.500 |
0.477 |
0.093 |
3/8 |
0.3750 |
16 |
0.304 |
0.291 |
0.125 |
0.035 |
0.025 |
0.625 |
| 5/8 |
0.625 |
0.602 |
0.093 |
1/2 |
0.500 |
13 |
0.414 |
0.397 |
0.154
|
0.042 |
0.036 |
0.700 |
| 3/4 |
0.750 |
0.727 |
0.093 |
5/8 |
0.6250 |
11 |
0.521 |
0.502 |
0.182 |
0.051 |
0.045 |
0.750 |
| 1 |
1.000 |
0.977 |
0.125 |
3/4 |
0.7500 |
10 |
0.638 |
0.616 |
0.200 |
0.055 |
0.049 |
1.000 |
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NECK AND FILLET UNDER HEAD - The screws may be necked under the head at option of Holo-Krome. The fillet at the intersection of the head bearing surface and neck or shoulder shall be above D within the tabulated limits for M.
NECK UNDER SHOULDER - The neck under the shoulder shall allow the shoulder to seat against the face of a standard basic GO thread ring gage.
Holo-Krome Socket Head Shoulder Screws conform dimensionally to ASME/ANSI B18.3.
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Caution: Information is for general reference only.
For more complete specifications consult the standards referenced, or contact us.
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