The Department of Defense, specifically the Department of the Navy through NAVSUP Weapon Systems Support, is soliciting proposals for the procurement of a Tube Assembly, classified under the NAICS code 333998 for miscellaneous general-purpose machinery manufacturing. This procurement is a sole source requirement for made new manufacture spare parts, necessitating Government Source Approval prior to award, as the Government does not possess sufficient data to contract with other sources. The selected contractor must adhere to stringent quality assurance standards and maintain compliance with ISO9001-2000/AS9100B quality systems, with proposals remaining valid for a minimum of 120 days. Interested parties should direct inquiries to Natalie Kilkenny at natalie.a.kilkenny.civ@us.navy.mil or by phone at 215-697-3951.