Cross Recessed Flat Drilling Screws
Product Name:Zinc Coated Flat Bugle Head Long Self Drilling Decking Screw
Material:Carbon Steel, Stainless Steel
Surface Treatment:Zinc Plated, Hot Dipped Galvanized, Black
Products Description
Cross recessed flat drilling screw is a unique structure of the screw, its head design is concave round, and the tail is cut with a bit to form a hexagonal shape, so it is also known as hexagonal countersunk head drilling screw. The structure of hexagonal countersunk head drilling screws is more complex than that of ordinary screws, but it also has more uses and advantages.
Products Parameter
|
Spec |
M3.5 |
M3.9 |
M4.2 |
M4.8 |
M5.5 |
|
dk |
6.83 |
7.4 |
7.9 |
9.02 |
11.02 |
|
k |
2.35 |
2.65 |
2.82 |
3.29 |
3.95 |
Products advantages
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Easy to control depth
Because tail is relatively thin, cross recessed flat drilling screw is very convenient to control depth of borehole.
Higher accuracy
Countersunk head and tail drilling head is larger, allowing it to provide higher drilling accuracy and controllability in fine work.
More flexible
Sunk drill tail is suitable for a variety of different materials, giving it a wider range of application and greater flexibility.
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