The present invention relates to HDD screws, and more specifically to
lubricating the HDD screws. HDD screws may be coated in a layer of a PFPE
based lubricant to reduce friction while fastening the screw into a HDD.
In addition to providing superior lubricity and reduced friction during
fastening and longer shelf life, PFPE lubricated screws provide narrower
clamping load distribution and lower particle generation compared to
currently used screw lubricants. Furthermore, because PFPE lubricants are
also used to lubricate magnetic disk surfaces, the HDD screws may provide
a reservoir for replenishing depleting lubricants on the magnetic disk
drive surface.