Product Description

The class 8.8 steel cap screw has a yellow zinc plated finish, has a serrated flange hex head with an external hex drive, and meets Deutsches Institut fr Normung DIN ***1 specifications.
Class 8.8 steel, composed of quenched and tempered medium carbon steel, is often used in applications where strength is the primary concern. The material is magnetic.
The zinc plating offers corrosion resistance and has a yellow reflective appearance. The flange hex head has six flat sides that a wrench can grip to turn from the side, enabling use when there is no space above the head for a screwdriver. The serrated flange acts like a washer to increase the fastener's bearing surface and distribute the clamping force over a larger area, providing a grip that resists loosening.