50K Series Metric Hex Slotted Screws Essentra Components 50K Series Metric Hex Slotted Screws feature UL 94V-2 nylon 6/6 construction and are ideal for difficult-to-reach or awkwardly located sockets. These screws are designed to mate with machine threads and help secure components to assemblies, and their slim head and hexagonal shape make them suitable for various spaces. The screws are available with or without a flange at the base of the screw head. Essentra Components 50K Series Metric Hex Slotted Screws are lightweight and offer a vibration-, chemical-, electrical-, and corrosion-resistant design.