Boat & marine screws
Sizes
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- #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
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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.
Buy boat & marine screws
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- 316 stainless marine screws assortmentAmazon results for this exact search
- A4 stainless M6 boat screwsAmazon results for this exact search
- transducer mounting screwsAmazon results for this exact search
- Buy on AmazonKits and single sizes, with reviews naming real devices
- Buy on eBayOEM screw sets and repair-parts sellers