The case is just good old 6061-T6 aluminum. The buttons are 303 stainless, as is the connector body. The insulator is Ultem 1000 The center pin is C18000 copper The spring is Lee Spring LW 025 02 0100S The snap ring is 15mm The case screws as 2-56 pan head .75" long stainless steel The board attachment screws are 0-80 round head .1875" long stainless steel