Buy Direct 1/4-20 x 3/8″ Cup Point Socket Set Screw – Steel – Black Oxide – UNC – Pkg of 100 – Holo-Krome 32118

Point Selection should take into account application, holding power, frequency of setting and hardness of mating parts. The Cup Point digs into the contact surface for maximum holding power under pressure. The Knurled Point features better locking power than the standard Cup Point. The Knurled Point combines the digging action of the Cup Point with counter-clockwise locking knurls that have a ratchet-locking action that helps resist loosening, even under the most severe vibrations