{"id":30467,"date":"2026-10-19T13:48:56","date_gmt":"2026-10-19T05:48:56","guid":{"rendered":""},"modified":"2026-10-19T13:48:56","modified_gmt":"2026-10-19T05:48:56","slug":"hot-dip-galvanized-vs-zinc-plated-fasteners","status":"publish","type":"post","link":"https:\/\/www.daosanfasteners.com\/ru\/hot-dip-galvanized-vs-zinc-plated-fasteners\/","title":{"rendered":"Hot-Dip Galvanized vs Zinc Plated Fasteners"},"content":{"rendered":"

How the Two Coating Processes Differ<\/h2>\n

Zinc plating is an electroplating process. The part is dipped in a zinc solution and a thin layer, usually 5 to 15 micrometres, is deposited at low temperature.<\/p>\n

Hot-dip galvanizing dips the part into molten zinc at about 450 degrees Celsius. The reaction forms a zinc-iron alloy layer, typically 45 to 85 micrometres thick, that is metallurgically bonded to the steel.<\/p>\n

Coating Thickness and Service Life<\/h2>\n

Because the galvanized layer is several times thicker, it corrodes several times more slowly. In a rural atmosphere a hot-dip coating can protect steel for 25 to 50 years.<\/p>\n

Zinc plating is usually measured in a few years outdoors, and much longer indoors where the humidity is controlled.<\/p>\n

Thread Fit and Assembly<\/h2>\n

A hot-dip coating adds material to the thread, so galvanized bolts and nuts are made with an oversize thread allowance and must be assembled as a matched set.<\/p>\n

Plated fasteners keep the standard thread tolerance and can be replaced individually, which matters for maintenance and for automated assembly.<\/p>\n

Choosing the Right Finish<\/h2>\n

Outdoor structures, poles, guardrails, marine and agricultural equipment point to hot-dip galvanizing.<\/p>\n

Indoor machinery, furniture, electronics and automotive interiors are usually zinc plated, often with a yellow or black passivation.<\/p>\n

For severe chemical exposure, stainless steel or a coating such as Dacromet is a better answer than either.<\/p>\n

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Need Help Choosing the Right Fastener?<\/h2>\n

Tell us the standard, size, grade and finish you need and our team will come back with a price and lead time, usually within 24 hours.<\/p>\n<\/div>\n

\u041e\u0442\u043f\u0440\u0430\u0432\u0438\u0442\u044c \u0441\u043e\u043e\u0431\u0449\u0435\u043d\u0438\u0435<\/a>or request a sample →<\/a><\/div>\n<\/div>\n
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Recommend Products<\/h2>\n
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\"Hexagon<\/span>Hexagon Bolts<\/span><\/a>\"High<\/span>High Strength Bolts<\/span><\/a>\"Hexagon<\/span>Hexagon Nuts<\/span><\/a>\"Threaded<\/span>Threaded Rods<\/span><\/a>\"Allen<\/span>Allen Bolts<\/span><\/a>\"U-Bolt\"<\/span>U-Bolt<\/span><\/a>\"Locking<\/span>Locking Nut with Nylon<\/span><\/a>\"Double<\/span>Double End Studs<\/span><\/a>\"Hexagon<\/span>Hexagon Bolts<\/span><\/a>\"High<\/span>High Strength Bolts<\/span><\/a>\"Hexagon<\/span>Hexagon Nuts<\/span><\/a>\"Threaded<\/span>Threaded Rods<\/span><\/a>\"Allen<\/span>Allen Bolts<\/span><\/a>\"U-Bolt\"<\/span>U-Bolt<\/span><\/a>\"Locking<\/span>Locking Nut with Nylon<\/span><\/a>\"Double<\/span>Double End Studs<\/span><\/a><\/div>\n<\/div>\n<\/div>","protected":false},"excerpt":{"rendered":"

Both finishes protect steel from corrosion, but they behave very differently in service. This comparison covers coating thickness, thread fit, service life and where each one belongs.<\/p>","protected":false},"author":1,"featured_media":30428,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[65],"tags":[],"class_list":["post-30467","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-technical"],"_links":{"self":[{"href":"https:\/\/www.daosanfasteners.com\/ru\/wp-json\/wp\/v2\/posts\/30467","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.daosanfasteners.com\/ru\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.daosanfasteners.com\/ru\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.daosanfasteners.com\/ru\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.daosanfasteners.com\/ru\/wp-json\/wp\/v2\/comments?post=30467"}],"version-history":[{"count":0,"href":"https:\/\/www.daosanfasteners.com\/ru\/wp-json\/wp\/v2\/posts\/30467\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.daosanfasteners.com\/ru\/wp-json\/wp\/v2\/media\/30428"}],"wp:attachment":[{"href":"https:\/\/www.daosanfasteners.com\/ru\/wp-json\/wp\/v2\/media?parent=30467"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.daosanfasteners.com\/ru\/wp-json\/wp\/v2\/categories?post=30467"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.daosanfasteners.com\/ru\/wp-json\/wp\/v2\/tags?post=30467"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}