The Lipped Drop-In (DIAL) features a lip at the top of the anchor body that keeps the top of the anchor flush with the concrete

3/4-10 x 4 1/4 Hex Cap Screw SS 316 (A4)

8 x 2 Simpson Flat-Head Deck-Drive™ DWP Wood Screws - 6-Lobe Drive 316 SS - Bulk Carton (3000)

solid masonry and hollow masonry

10 x 2 1/2 Simpson Bugle-Head Wood Decking Screws - Square Drive T17 316 SS - Bulk Pail (2000) 1-8 Grade 8 Hex Cap Screws Yellow Zinc Plated The Lipped Drop-In (DIAL) features10 x 2 1 2 Simpson Bugle Head Wood Decking Screws Square Drive T17 316 SS Bulk Pail (2000) . The type 17 tip provides fast starting and resists splitting in hardwood. Coarse threads run approximately 2 3 up the shank to draw the decking tightly to the substrate. Pre drilling is recommended near board ends to prevent splitting. 316 stainless steel is ideal where superior corrosion resistance is required.