3/16X.250-.500 Large Flange Dome Head Multi Grip Rivet Zinc BPP188 It has a hexagonal head

It has a hexagonal head with a recessed socket

The nylon insert provides a positive locking action that prevents the nut from loosening due to vibration or other forces

this washer effectively seals against moisture and debris

This 3/8-16 x 6 combination (Phillips/slotted) round head fully threaded machine screw is made of steel and has a zinc finish

This screw is ideal for use in demanding applications such as aerospace

3/16X.250-.500 Large Flange Dome Head Multi Grip Rivet Zinc BPP188 It has a hexagonal headThe 3 16X. 250 . 500 Large Flange Dome Head Multi Grip Rivet Zinc is a high strength, corrosion resistant rivet designed for use in a variety of applications. The large flange head provides a wide bearing surface, which helps to distribute the load and prevent the rivet from pulling through the material. The multi grip design allows the rivet to be used in a variety of material thicknesses, making it a versatile choice for a variety of projects. The