Grip-Rite GripRite 516 in x 318 in PrimeGuard Plus Hex Washer Head Type 17 Structural Screws 50 ct

Grip-Rite Structural Screws deliver fast reliable fastening for exterior load-bearing wood projects. These 5/16 in x 3-1/8 in screws feature a Hex Washer/Star Drive Dual Drive recess that accepts the included hex driver or a star bit for job-site flexibility. The Type 17 point and coarse thread allow self-drilling installation without pre-drilling offering a faster alternative to lag screws. PrimeGuard Plus lifetime coating improves corrosion resistance for treated lumber and ground-contact use. Each head includes an ID code and package includes a lateral load value chart while cobalt blue packaging features clear iconography and a scannable QR code linking to the ICC report for technical specifications.