These locknuts have a ring of Nylon 6/6 attached that grip and absorb vibration, making the locking feature very secure. 18-8SS, which is a Type 300 series Stainless Steel, is one of the most widely used corrosion resistant metals for threaded and non-threaded fasteners. Uses include many marine, electrical and food industry applications. It has fair machinability and cold forming properties. Max. tensile strength: 150,000 PSI.
 

Aluminum Nylon Insert Locknuts have the same vibration resistance and holding strength as steel, a light metal; one third the weight of mild steel with good electrical conductivity, non-magnetic and will not spark. This metal is completely compatible with many chemicals and is safely used in many food containers. These alloys are widely used in the plating and aviation industry today. Aluminum accepts paint readily and is frequently anodized to improve resistance to corrosion and abrasion. Max. tensile strength - Alloy 2024-T4: 60,000 PSI, Alloy 6061-T6: 42,000 PSI.