The Department of Defense, through the NAVSUP Weapon Systems Support (NAVSUP WSS), is seeking to procure spare parts for a Shuttle Assembly, specifically NSN 7R-1720-011581698-VX, with a quantity of 74 units required. This procurement is critical as the parts are flight critical and require engineering source approval from the design control activity to ensure quality, with only pre-approved manufacturers, namely THE ENTWISTLE COMPANY and INDUSTRIAL MARINE INC., eligible to supply unless new sources are qualified. The contract will be awarded based on a Small Business Set-Aside, with a duration of one year, and interested vendors must submit their Source Approval Requests and capabilities within 15 days of this notice to Timika Nicholson at TIMIKA.D.NICHOLSON.CIV@US.NAVY.MIL, as hard copies and phone requests will not be accepted.