#8 Flat Head Deck Screws with Nibs Square Drive Stainless Steel 316

#8 flat head deck screws in 316 stainless steel, with a square drive (Robertson) recess that resists cam-out. The 82° flat head has nibs under the head that cut a clean countersink as it seats, so the head sits flush even in hardwood decking. The Type 17 point has a cutting notch that drills its own pilot as it goes, which reduces splitting near board ends. The coarse thread runs partway up the shank, so the board pulls down tight to the framing. 316 stainless adds molybdenum for better resistance to chlorides, the usual choice near salt water and pools. 3 lengths (1-5/8" to 2-1/2"). Sold in production-volume bulk packs.

Guides: 18-8 stainless steel vs. other grades