This is an FMS new spare buy RFQ for an ELEC TUBE under commercial procedures, requiring a firm-fixed-price award to an authorized source/distributor; unauthorized sources will not delay award. Offerors must submit electronically to the contracting officer and comply with MIL-STD packaging, Government Source Inspection, WAWF payment, FOB Origin, IUID, and CMMC Level 1 requirements. Quotations should include unit and total price, delivery lead time, award and inspection/acceptance CAGEs, cost breakdown/profit rate if feasible, delivery vehicle if applicable, and a proposal expiration date of at least 120 days. Evaluation will prioritize price, then past performance, then supplier performance risk; the government may amend or cancel the requirement and award only if a fair and reasonable offer from a qualified responsible source is received and FMS funding approval/validity is adequate. Contract administration references NAVICP-MECH in Mechanicsburg, PA, and inspection records must be retained for 365 calendar days after final delivery.