10-16 x 3/8 Unslotted Indented Hex Washer Thread Cutting Screw Type 25 Fully Threaded Zinc .406 They have a round head

They have a round head with a Phillips drive and a Type U point for easy installation

The Phillips drive type ensures a secure fit and prevents cam-out during driving

With a diameter of 6mm

The 3/8-16 Flex Type Hex Lock Nut Thin Height Light Cadmium and Wax is a type of nut that is used to secure bolts and screws

10-16 x 3/8 Unslotted Indented Hex Washer Thread Cutting Screw Type 25 Fully Threaded Zinc .406 They have a round head10 16 x 3 8 Unslotted Indented Hex Washer Thread Cutting Screw Type 25 Fully Threaded Zinc 10 16 thread size 3 8 inch length Unslotted indented hex washer head Type 25 thread cutting screw Fully threaded Zinc plated for corrosion resistance Designed for use in metal and plastic applications Provides a secure and vibration resistant hold Easy to install with a hex key or driver