Presolicitation notice from the Department of Defense, Department of the Navy, for the procurement of a mounting base for electrical hardware and supplies. The mounting base, NSN 7R-5975-013342984-EE, is required in a quantity of 3 each and must be delivered FOB origin. This part requires engineering source approval to maintain its quality and can only be acquired from the approved source(s) due to their unique design capability, engineering skills, and manufacturing/repair knowledge. An alternate source must qualify according to the design control activity's procedures. Government source approval is required prior to contract award. Interested parties must submit the necessary information detailed in the NAVSUP Weapon Systems Support Source Approval Information Brochures. The proposed contract action is for supplies or services for which the Government intends to solicit and negotiate with only one source. All responsible sources may identify their interest and capability to respond to the requirement.