The 5/16-18" Flat Head Hexagonal Socket Screw is a type of fastener for Differential Steering and Transmissions to secure the control handle in place. The head of the screw has a flat and cylindrical shape with a recessed hexagonal socket in the center. It is designed for a flush fit when installed, which means the head of the screw sits flat against the surface it's being attached to. The hexagonal socket (also known as an Allen socket) on the head of the screw allows it to be tightened or loosened using a hex key or Allen wrench.Attributes:• Provides secure and reliable fastening• Hexagonal recess in the head• Used for securing parts with a flush surface• Provides a clean and low-profile finishApplications:This 5/16-18" Flat Head Hexagonal Socket Screw is used to securely fasten the differential steering control handle in place, ensuring a flush and obstruction-free surface.