Over-sized threads are wider than gutter spikes

1 x 10 ITM SDS Plus Hammer Drill Bit

These are partially threaded hex cap screws with all dimensions conforming to DIN 931

These 305 stainless steel screws are corrosion-resistant and feature a #7 x 3 size and T15 drive style

Simpson’s Flat-Head Deck-Drive™ DWP wood screws are perfect for outdoor decks

5/16 x 8 Strong-Point Wafer Head Knurl Type 17 WAR Coated Timber Screw - Carton (250) Titen HD® Countersunk Head Style Heavy-Duty Screw Anchor 316 Stainless Steel Over-sized threads are wider than5 16 x 8 Strong Point Wafer Head Knurl Type 17 WAR Coated Timber Screw Carton (250) High performance timber screws featuring a wafer head design. Dimensional specifications: 5 16 x 8 with 5 16 diameter. Features knurled thread pattern for superior grip and reduced installation torque. Engineered with Type 17 self drilling point that eliminates pre drilling requirements in most applications. Exterior wood structural screws for outdoor applications.