Stainless Steel Square Drive Flat & Pan Head Sheet Metal Screws Type "A" Thread.

• For Square Drive Bits, Sharp Point, Self Piercing, Screws with a Square Insert Drive.
• Sharp Cutting Threads, Full Thread Length.
• Made of 18-8 / 304 Stainless Steel, These are a Popular Variety of Screws for Many Production Applications.
• Square Drives Offer More Resistance to Stripping Then Phillips Drive Screws.
• Commonly Called Robertson Screws or Robertson Drive Screws.
• Type "A" Threads for use in Sheet Metal, Fiberglass, Wood, Plastic and Many Other Applications Where Thread Cutting Is Needed.
• Used in Sheet Metal, Fiberglass, Wood and Many Other Applications. 
• Right Hand Thread, UNC, Coarse Thread.
• ANSI B18.6.4 Standards.
• SMALLER DIAMETERS SOLD IN BOXES OF 100 ONLY.