1/4 x 5/8 Countersunk Drive Aluminum Rivet B7/16-20 which means that it has

which means that it has a flat top with a slightly rounded edge

The steel mandrel ensures a strong and secure connection

The 12-8 x 5/8 Phillips Pan Deep Thread Screw Type 17 point Full Thread Zinc is a versatile fastener designed for a wide range of applications

It has a diameter of 7/16 inches

which is a high-strength material that is resistant to wear and corrosion

1/4 x 5/8 Countersunk Drive Aluminum Rivet B7/16-20 which means that it has1 4" x 5 8" Countersunk Drive Aluminum Rivet: **Diameter:** 1 4 inch (6. 35 mm) **Length:** 5 8 inch (15. 88 mm) **Material:** Aluminum **Head Style:** Countersunk (flattened top with a slight taper) **Drive Style:** Requires a countersunk rivet tool to set **Finish:** Natural aluminum color **Tensile Strength:** 2,500 pounds per square inch (psi) **Shear Strength:** 1,250 psi **Applications:** Joining thin metal sheets, plastic, and other lightweight