M5x20 Countersunk Machine Screws, Phillips Bolts, Cross Recessed Flat Head Fastener 5mm Zinc Plated Screw Suitable for Metal, Construction, Installation, DIY (Pack of 50)

PH COUNTERSUNK SCREW: The screw has a round head with a PH tip. Metric mechanical screws are designed for metal-to-metal applications requiring a pre-drilled hole and corresponding metric nut or screw to be screwed. These screws are usually fully threaded with machine threads and a blunt tip. USE: The DIN 965 metric standard is a Phillips flat countersunk screw used for applications where the head must flush with the contact surface of the substrate. The preload should normally be maintained at such a level that the combined load in the bolt does not exceed the tensile yield strength of the bolt material. (correct size screwdriver required) ZINC ALLOY STEEL: Material commonly used in mainly dry environments. Zinc plating provides temporary rust protection, but once it wears out, the steel will rust. Suitable for: general purpose engineering, macinery, automotive panel fixing, building, sheet metal, furniture, electronic plastic manufacturing, DYI. DIMENSIONS: diameter M5, length 20, head diameter 9.2, thread length 17.5, head height 2.5, thread step 0.8.