Be careful ordering this item. The item shipped is not as pictured. They are NOT self-tapping as indicated. If I was not about to leave on vacation I might return them. But they're cheap enough I guess I'll keep them anyway. They actually seem to be the stainless steel wood screws, which are much more expensive for some reason, so you might find them a good deal if that's what you're looking for.Click Here to see more reviews about: Stainless Steel Self Tapping Screw, Flat Head, Phillips Drive, #8-18, 1-1/2" Length (Pack of 100)
Product Description:
Self Tapping Screws are designed to advance when turned, creating their own threads in the material.They are often used in sheet metal and plastic.
Stainless steels are used for their corrosion resistance, high-temperature strength, scaling resistance, and low-temperature toughness. These properties account for their extremely wide use in practically every industry.Austenitic Stainless Steels are alloys of iron and carbon that contain between 16% and 30% Chromium, a maximum of 0.15% carbon, along with Nickel (or Manganese), and other alloying elements. The chromium, which helps develop a passive surface oxide film, provides corrosion resistance in stainless steels. Austenitic Stainless Steels are designated by a 3 digit SAE Stainless Steel Grade beginning with the number 3 (e.g. 304, 316). Another common naming convention for Austenitic Stainless Steels are 18/8, 18/10, 18/0, etc. where the 18 refers to the % of Chromium and 8 to the % of Nickel contained in the material.
Flat head fasteners are designed to fit flush to the surface when used with countersunk holes.Length is measured from the top of the head.The Phillips drive style was originally designed so that the driver would slip out under extreme torque, preventing over-tightening and damage to the fastener or the material.
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