Are you looking for the part numbers 387-3421-3, 387-3421-3, 387-3421-3, 387-3421-3 under top NIIN 012158538 from W Machine Works Inc, Boeing Company The, Mcdonnell Douglas Helicopter Co Inc, Alliant Techsystems Operations Llc manufacturers for NSN 5305012158538? Get an instant quote for desired nato parts in stock and ready to be shipped. Along with NIIN 012158538 corresponding part numbers, we have access to billions of premium parts such as Screw Machine in aviation, military NSN Database . We are committed to providing our customers with the resources to simplify and streamline their entire purchasing process.