GRK Fasteners GRK No. 20 x 5-1/8 in. L Star Round Head Yellow Zinc Steel Structural Screws 5 - Case Of: 5050

The screws are using specially self-tapping hardened steel screw, W-Cut thread design as a zipper tip, coated Climatek, sharp threads and integrated washer points for indoor or outdoor use and are ideal for use in anchoring concrete or wood to concrete applications, including frames and basement sheds. ;; Brand Name: GRK Fasteners Call Size: No. 20 Length: 5-1/8 inches. Driving Style: Star Head Type: Washer Head Product Type: Structural Screws Number in package: 50 pk Driver drill bit included: No Color: Yellow Inside or outside: Inside and outside Diameter: 5/16 in. Self-Drilling: Yes Finishing: Climacoat Package Type: Clamshell Type of Thread: Self-Drilling Material: Self-Drilling Steel: Yes