>> Search results for: PA3500 NSN Search Results National Stock Number (NSN) Description 9540-00-542-2728, 9540005422728 ANGLE,STRUCTURAL 4240-15-153-1148 , 4240151531148 PROTECTOR, HEARING 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