9.5mm - 200mm Screwfix Self Drilling Screws Nibs Under Head , Ss Tek Screws Cr + 3

9.5mm - 200mm Screwfix Self Drilling Screws Nibs Under Head , Ss Tek Screws Cr + 3

1. Descriptions:

8. Drive: philips, square, pozi, torx , slot , Combined

9. Packing: bulk packing, small box packing, plastic box packing, as customer requirements

2. Features:

• #8-18
• Fully threaded
• Hardened stainless steel to easily drill into materials
• Countersunk head that runs flush with the installation surface
• Self drilling (TEK) point
• Hardened zinc plated and 410 Stainless steel Phillips flat head self drilling screws are corrosion resistant and hardened to make drilling easier

3. Self Drilling Screw Selection Guide:

Drill Flute

The length of the drill flute determines the metal thickness that can be drilled. The flute itself provides a channel

for chip removal during drilling action. If it becomes completely imbedded in material, drill chips will be trapped in the flute and cutting action will cease. This will cause the point to burn up or break

Point Length

The unthreaded section from the point to the first thread should be long enough to assure the drilling action is

complete before the first thread engages the drilled metal. Screw threads advance at a rate of up to ten times faster

than the drill flute can remove metal. All drilling therefore should be complete before threads begin to form.

Drilling Through Wood To Metal

If your application calls for drilling through wood over 1/2" in thickness, a clearance hole is required. Select a fastener with break away wings for this type of job. The wings will ream a clearance hole and break-off when in contact with metal surface (minimum metal thickness .090") to be drilled.

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4. Drawing Specifications:

5. Advantages:

6. More pictures:

DIN7504P CSK HEAD SELF DRILLING TEK SCREWS

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