Grip-Rite PrimeGuard Plus exterior screws feature a proprietary tan polymer coating engineered to meet ASTM B-117 salt spray corrosion standards. The #9 x 3" size is well-suited for heavier-duty exterior fastening including ledger boards, stair stringers, and structural fencing. Sold in a 5 lb box for mid-size projects.

• T-25 Star Drive resists cam-out for reliable driving
• Bugle head with nibs for smooth countersinking into wood
• Type 17 self-drilling point eliminates the need for pre-drilling
• Coarse thread for superior holding power in wood
• Tan polymer coating meets ASTM B-117 salt spray standards
• Backed by a 10-year corrosion warranty

Applications: Ledger boards, stair stringers, fencing, and general exterior construction.