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#4-40 stainless steel flat head slotted or straight slot machine screws. 100 per box. Some sizes available individually. Excellent corrosion resistance. The standard fastener for many boatbuilding and exterior woodworking projects. Flat head screws install flush with the surface or are countersunk and the hole is plugged.
These Stainless Steel Machine Screws are perfect for the marine environment. This is what all the big production boatbuilders use. There are also a million exterior uses where a stainless fastener will come in handy. Designed for harsh environments.