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Boat & marine screws

Sizes

Tap a size to shop screws in exactly that thread and length. Affiliate links — they cost you nothing extra.

  • #8 and #10 x 3/4–1-1/2" 316 stainless — deck hardware, trim, cleats
  • M5 / M6 A4 stainless — electronics mounts, transducer brackets, imported fittings
  • 1/4-20 — pedestal and seat mounting

What it fits

Tap any item to shop screws for it. Affiliate links — they cost you nothing extra.

Common mistakes

Use 316 (A4) stainless, not 304 — 304 pits and streaks in salt within a season. Bed every fastener that goes through the deck in sealant or you invite core rot.

Marine screw assortments ship in 316 with matching nylock nuts and finish washers.

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