Hangzhou Lizhan Hardware Co.,Ltd
choose us:
1、A series of systematic service of special fasteners which can make customers enjoy one-station service.
2、To be professional is the origin of customer's company
3、To be responsible is the priceless name card of a company
4、We can design and process according to your samples and drawings,provide design of special fasteners for your reference and help you solve the practical problems in machinery industry.
CHIPBOARD SCREW
Heat Treated Case Hardened to Prevent Snapping 40 Degree Thread Angle, 25 Degree Point Angle Zinc, Yellow Zinc, Brass or Black Oxide available
PATTA self-drilling Chipboard screws have a coarse thread and fine shank to provide maximum grip and minimum strip out into chipboard, MDF board and soft timbers. The head has ribs molded around the countersunk head which help remove the chipboard particles when countersinking.
How to Use
1. Measure the total thickness of the materials to be fastened.
2. Choose a screw long enough to provide approx. 20mm of thread embedment into the chipboard or wood being fastened to.
3. Fit a #2 Phillips drive bit to a power screwdriver set to low speed, approx. 1000rpm.
| normal size |
|
M3.0 |
M3.5 |
M4.0 |
M4.5 |
M5.0 |
M6.0 |
| thread diameter |
min. |
2.8 |
3.3 |
3.75 |
4.25 |
4.7 |
5.7 |
| max. |
3 |
3.5 |
4 |
4.5 |
5 |
6 |
| head diameter |
min.. |
5.6 |
6.6 |
7.5 |
8.5 |
9.5 |
11.5 |
| max. |
6 |
7 |
8 |
9 |
10 |
12 |
| pitch |
|
1.35 |
1.6 |
1.8 |
2 |
2.2 |
2.6 |
| head height |
max. |
1.9 |
2.1 |
2.5 |
2.7 |
3 |
3.6 |
| shank |
max. |
1.6 |
1.8 |
2 |
2.2 |
2.5 |
3 |
| recess no. |
|
1 |
2 |
2 |
2 |
2 |
3 |
| recess depth |
min. |
1.6 |
1.6 |
2.05 |
2.6 |
3 |
3 |
| max. |
2 |
2.1 |
2.5 |
3.1 |
3.45 |
3.45 |
|
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