The utility model relates to a subassembly of divulging a secret, concretely relates to electric power system computer special suit of preventing divulging a secret, including screw and spanner, the screw includes the screw terminal, and the screw terminal decorative pattern is established to the dysmorphism, and the spanner includes stalk portion and head, and the head decorative pattern suits with the screw terminal decorative pattern, screw terminal downwardly extending formation screw rod section, the screw rod section includes the body of rod and self -destruction subassembly, and the self -destruction subassembly is provided body of rod bottom, and the self -destruction subassembly includes the center pin, and center pin one end is fixed at body of rod bottom center, and center pin other end fixed connection holding surface, holding surface be conical, adopt elastic material to make, fixed duroplasts strip on the holding surface, and the great one end of holding surface diameter is passed through the strip of paper used for sealing and is fixed in body of rod bottom, and the spring cup joints the one end of being close to the body of rod at the center pin, and spring one end is fixed connection bottom the body of rod, spring other end fixed connection baffle ring. The utility model discloses can prevent effectively that the stranger from opening the server casing at will, prevent hard disk and important loss of data.