316 marine-grade stainless steel provides superior corrosion protection in coastal areas and marine applications Countersunk head for a flush finish Zenith trusted quality at competitive prices Convenient "grab-n-go" pack For joining solid materials (like metal, plastic, timber etc.) for a flush finish It's also used in pre-tapped (threaded) holes for fixing together machinery and appliances, such as fittings, computers etc. Elevate your construction projects with Zenith Bolts & Nuts. Designed for durability and strength, these stainless steel M5 x 50mm countersunk head bolts offer reliable fastening solutions for various applications. The 316 stainless steel construction ensures corrosion resistance, making them ideal for both indoor and outdoor use, even in harsh environments.