| |
FASTENERS
DIMENSIONAL DATA
Holo-Krome Socket Button Head Cap Screws
Note: This product is designed for light fastening applications only, such as sheetmetal cover, plastic guards, etc. It should NOT be used in critical high strength applications where socket head cap screws should be used. |
HOLO-KROME
SOCKET
BUTTON HEAD
CAP SCREWS
|   |
| |
NOMINAL
SIZE
OR BASIC
SCREW DIAMETER |
M
(4) |
A |
H |
S
|
J
(4) |
T |
F |
L |
SPLINE
SOCKET
SIZE |
HEAD
DIAMETER |
HEAD
HEIGHT |
HEAD
SIDE
HEIGHT |
HEXAGON
SOCKET
SIZE |
KEY
ENGAGEMENT |
FILLET
EXTENSION
ABOVE D |
THREAD
LENGTH |
| NOM. |
MAX. |
MIN. |
MAX. |
MIN. |
MIN. |
MAX. |
NOM. |
MIN. |
MAX. |
MIN. |
| 0 |
0.0600 |
0.048 |
0.114 |
0.104 |
0.032 |
.026 |
0.010 |
0.035 |
0.020 |
0.010 |
0.005 |
1/2 |
| 1 |
0.0730 |
0.060 |
0.139 |
0.129 |
0.039 |
0.033 |
0.010 |
0.050 |
0.028 |
0.010 |
0.005 |
1/2 |
| 2 |
0.0860 |
0.060 |
0.164 |
0.154 |
0.046 |
0.038 |
0.010 |
0.050 |
0.028 |
0.010 |
0.005 |
1/2 |
| 3 |
0.0990 |
0.072 |
0.188 |
0.176 |
0.052 |
0.044 |
0.010 |
1/16
0.062
|
0.035 |
0.010 |
0.005 |
1/2 |
| 4 |
0.1120 |
0.072 |
0.213 |
0.201 |
0.059 |
0.051 |
0.015 |
1/16
0.062
|
0.035 |
0.010 |
0.005 |
1/2 |
| 5 |
0.1250 |
0.096 |
0.238 |
0.226 |
0.066 |
0.058 |
0.015 |
5/64
0.078 |
0.044 |
0.010 |
0.005 |
1/2 |
| 6 |
0.1380 |
0.096 |
0.262 |
0.250 |
0.073 |
0.063 |
0.015 |
5/64
0.078 |
0.044 |
0.010 |
0.005 |
5/8 |
| 8 |
0.1640 |
0.111 |
0.312 |
0.298 |
0.087 |
0.077 |
0.015 |
3/32
0.094 |
0.052 |
0.015 |
0.010 |
3/4 |
| 10 |
0.1900 |
0.145 |
0.361 |
0.347 |
0.101 |
0.091 |
0.020 |
1/8
0.125 |
0.070 |
0.015 |
0.010 |
1 |
| 1/4 |
0.2500 |
0.183 |
0.437 |
0.419 |
0.132 |
0.122 |
0.031 |
5/32
0.156 |
0.087 |
0.020 |
0.015 |
1 |
| 5/16 |
0.3125 |
0.216 |
0.547 |
0.527 |
0.166 |
0.152 |
0.031 |
3/16
0.188 |
0.105 |
0.020 |
0.015 |
1 |
| 3/8 |
0.3750 |
0.251 |
0.656 |
0.636 |
0.199 |
0.185 |
0.031 |
7/32
0.219 |
0.122 |
0.020 |
0.015 |
1-1/4 |
| 1/2 |
0.5000 |
0.372 |
0.875 |
0.851 |
0.265 |
0.245 |
0.046 |
5/16
0.312 |
0.175 |
0.030 |
0.020 |
2 |
| 5/8 |
0.6250 |
0.454 |
1.000 |
0.970 |
0.331 |
0.311 |
0.062 |
3/8
0.375 |
0.210 |
0.030 |
0.020 |
2 |
|
| |
- THREAD LENGTH. On all stock lengths the last complete (full form) thread measured with a thread ring gage (having the thread chamfer and/or counterbore removed) extends to within two threads of the head. On other lengths and diameters the length of the thread will conform to Socket Head Cap Screw thread lengths.
- SCREW LENGTH. The length of the screw is the distance measured on a line parallel to the axis, from the plane of the bearing surface under the head to the plane of the flat of the point.
- THREADS. Threads are Class 3A UNRC and UNRF with Holo-Krome controlled radius root and radius runout.
Class 3A threads do not provide a plating allowance. When plating is required it is recommended that Holo-Krome supply the parts plated.
| STANDARD LENGTH INCREMENTS |
| Nominal Screw Length |
Standard Length Increment |
| 1/8 thru 1/4 |
1/16 |
| 1/4 thru 1 |
1/8 |
| 1 thru 2 |
1/4 |
| LENGTH TOLERANCES |
| Nominal Screw Size |
0 thru 3/8,
Inclusive |
1/2 and 5/8,
Inclusive |
| Nominal Screw Length |
Tolerance on Length |
| Up to 1 in., Incl. |
-0.03 |
-0.03 |
| Over 1 in. to 2-1/2, Incl. |
-0.04 |
-0.04 |
- SOCKETS. Thermo-Forging®, a Holo-Krome patented process, provides accurately formed sockets without broaching chips. Because Thermo-Forging® is not a machining process, it does not shear metal grains and sockets can be deeper and much stronger.
- FILLET. For all lengths of screws, the form of the fillet shall be optional, provided it fairs into the bearing surface within the limits of the thread major diameter maximum plus F maximum, and the thread major diameter minimum, plus F mininum, and is a smooth and continuous curve having a bearing surface juncture radius no less than that tabulated below.
Nominal
Screw
Size |
Juncture
Radius
Min. |
| 0 |
.002 |
| 1 |
.003 |
| 2 |
.003 |
| 3 |
.004 |
| 4 |
.004 |
| 5 |
.005 |
| 6 |
.005 |
| 8 |
.006 |
| 10 |
.006 |
| 1/4 |
.007 |
| 5/16 |
.009 |
| 3/8 |
.012 |
| 1/2 |
.016 |
| 5/8 |
.021 |
- BEARING SURFACE. The plane of the bearing surface shall be perpendicular to the axis of the shank within 2 degrees.
- Holo-Krome Button Head Cap Screws conform dimensionally to ASME/ANSI B18.3 and meet the requirements of ASTM F835.
| |
Caution: Information is for general reference only.
For more complete specifications consult the standards referenced, or contact us.
|
|
