CSK M4 x 20mm Machine Screw Fastener

The CSK M4 x 20mm machine screw is a precision fastener designed for use in electrical panels, machinery assembly, and general industrial applications. With a countersunk head profile and M4 thread diameter, it provides a flush finish ideal for tight spaces and professional installations. Suitable for electricians, panel builders, and maintenance technicians working with steel, aluminium, and composite materials.