>> Search results for: 4X20UNI2544S3740 NSN Search Results National Stock Number (NSN) Description 5305-15-072-2819, 5305150722819 SCREW, MACHINE 5305-15-072-2812 , 5305150722812 SCREW, MACHINE 1 Related Inventory 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