#12 x 3-1/2" Zinc Plated Steel Bugle Head Star Drive Interior Wood Screws

Diameter: #12
Length: 3-1/2"
Material: Steel
Finish: Yellow Zinc
Head Style: 6 Nibs Bugle (T-25 Star Bit)
Point Type: Type 17
Thread Type: Double CSK
Thread Length: Partial
Style: Serrated
Type: Deck Screw

Box of 25.

A deck screw is similar to a drywall screw except that it is has improved corrosion resistance and is generally supplied in a larger gauge.