This pack of 12 official Fender Humbucker Pickup Mounting Screws have a pan/round phillips head and are used for mounting humbucker pickups on most Fender guitars. These have the common 3-48 imperial thread used on Seymour Duncan, EMG, Dimarzio, Gibson and many other humbucker pickups and can be used to mount humbuckers to pickup rings or scratchplates. These are available as handy spares if you need to replace lost or damaged parts.