#8-18 Stainless Steel Roofing Self Drilling Screws
Diameter - Thread Pitch: #8-18
- Comes with a drill point (TEK)
- Also called self drillers
- Used for attaching metal roofing and siding panels to metal stud framing
- Normally fully threaded minus the drill point
- The point should be based on thickness of the metal you are penetrating
#8 Hex washer head self driller with EPDM rubber metal beaked washer for metal roofing and siding. The EPDM (Ethylene Propylene Diene Monomer) rubber which has a wide range of application. This is the best rubber for metal building and siding applications to stop water from entering the building with long life spans.
A self drilling screw drill point depends on the metal thickness. The typical 25 to 16 gauge will use a TEK 3 and 14 gauge and below will require TEK 4-5.
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Product Specifications
Across Flats (Width)
1/4" (Max 0.250 - Min 0.244)
Application
Roofing & Siding
Color
Silver
Corrosion Resistant
Yes
Diameter
#8
Drive Style
External Hex
Grade
410
Head Diameter
1/4"
Head Style
Hex
Head Thickness with Integral Washer
Max 0.136 - Min .134
Material
Stainless Steel
Other
Includes Stainless Steel Backed Neoprene EPDM Washers
Point Type
TEK
Product Type
Self Drilling Screws
System of Measurement (Unit)
Inch
TEK Self Drilling Point
TEK 2
Thread Diameter Major
(#8) 0.166"
Thread Diameter Minor
(#8) 0.122"
Thread Direction
Right Hand
Thread Pitch (Count)
18 Per Inch
Thread Standard
UNC
Thread Type
Coarse
Tolerance (IFI)
Actual measurements may vary slightly +/- depending on production run within IFI Tolerances
Washer OD
0.50"
Washer Thickness
0.166"
Wrench Size
1/4"
