SS Pan Head Machine Screw 1/4-20 x 1 1/2″

12 Count 1/4-20 x 1 1/2″ Pan-Head Stainless Steel  Machine Screw with locking nylon hex nut.

Machine screws are fasteners that are  used for mounting rod holder bases to metal material by going into a tapped hole or through a hole and being held by a nylon nut.