#8-18 Stainless Steel Roofing Self Drilling Screws
Diameter - Thread Pitch: #8-18
#8 Hex washer head self drill with EPDM rubber metal beaked washer for metal roofing and siding.
- Comes with a drill point (TEK)
- Used for attaching metal roofing and siding panels to metal stud framing
- Normally fully threaded minus the drill point
- Based on the thickness of the metal you are penetrating
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"
