410 Stainless #8 x 1/2" Wafer Head Philips Self Drilling Sheet Metal Tek Screws, (1/2" to 1-5/8" Length in Listing), 100 Pieces, Modified Truss Head Self Driller (#8 x 1/2 inch)

Self-Drilling Screws, also known as Tek screws, eliminate the need for a pre-drilled hole. The length of the drill point determines the material thickness which the screw can reliably penetrate. When selecting a self-drilling screw design, it is important to consider the material thickness and type of materials to be joined. These #10 x 3/4" stainless teks are great to use in environments that are damp. These work great on gutters.

Driver Size: 5/16" Hex
Tensile - 180,000 psi, Hardness - 40 Rockwell C
Type BSD is a tapping screw with spaced threads and a drill point which drills its own hole
#3 Drill Point; Appropriate for material thicknesses up to 0.176"
Driver Size: 5/16" Hex
Tensile - 180,000 psi, Hardness - 40 Rockwell C
Type BSD is a tapping screw with spaced threads and a drill point which drills its own hole
#3 Drill Point; Appropriate for material thicknesses up to 0.176"

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Stainless #10 x 3/4" Hex Washer Head Self Drilling Sheet Metal Tek Screws with Drill Point, (1/2" to 2" Lengths in Listing) 100 Pieces (#10 x 3/4 inch);