Solid 316 Stainless Steel Machine Screws / Bolts
Most retailers will sell stainless steel machine screws and not name the alloy. "Stainless Steel" encompasses a large variety of alloys, and you'll often find that an inferior, and cheaper to produce "Stainless Steel" is what's sold when the alloy goes unnamed. We only carry Type 316 Stainless Steel Machine Screws, and won't sell you anything less, as it's not what we would use on our boat.
316 (A4) Stainless Steel is far more corrosion resistant than it's 304, A2, or 18-8 Stainless Steel counterparts, and should be your go-to alloy in a marine stainless steel application. The additional nickel and molybdenum in 316 stainless adds additional corrosion protection that is necessary in a marine or otherwise corrosive environment.
These oval head 316SS machine screws, or machine bolts come in imperial sizes, have a countersunk (CSK) head, and are available in phillips drive. They'll polish up to a mirror finish if desired.
Purchase by the piece, or in large boxes to receive quantity discounts and pricing that will beat any other retailer. Simply enter the quantity you'd like in the "Quantity" box above and your discount will be applied if applicable.
Great resource for 316ss fasteners, not the inferior ss that west marine sells.