>> Search results for: 4990A NSN Search Results National Stock Number (NSN) Description 4820-01-329-0921, 4820013290921 VALVE,RELIEF,PRESSURE AND TEMPER 5305-99-534-0564 , 5305995340564 SCREW,SET 1 Related Inventory D4990AC Readily AvailableAdd to RFQUPD4990AC Readily AvailableAdd to RFQ374990A1 Condition NECase Constructi Readily AvailableAdd to RFQ Search You can use this search box to continue searching. Search parameters can include any combination of characteristics, specifications, description, partial part numbers, NSN or other stocking number. Special characters are not needed and are automatically stripped before searching. Do you sell this part? Become part of our growing pool of certified suppliers. Send Information