316 Stainless Steel Hex Bolt M12 x 40mm – Marine Grade | Jaycar

Short run, big thread. That's this one — Jaycar M12 x 40mm in 316-grade stainless. When your fitting needs the heft of a 12mm thread but the plate or bracket is only 40mm deep, this is the bolt that holds without weeping rust through the paint. Marine-grade alloy means it's not going to orange up on your deck hardware by February. Hex head, standard fit. Sold individually

• 316-grade stainless steel for long-term saltwater and corrosion resistance
• M12 thread with 40mm length — high-strength grip in shallow fittings
• Hex head design for standard wrench or socket tools
• Ideal for marine deck hardware, rail brackets and coastal structures
• Sold individually — no minimum pack size