National Item Identification Number
National Stock Number
Federal Supply Class
(All Except USA) A headed externally threaded fastener whose threaded portion may extend on part or whole of its shank. The head is designed to be held or driven with a tool. The threaded portion is cylindrical and its diameter 1.6 mm or more. For items with diameters below 1.6 mm see SCREW, INSTRUMENT. The item is designed to be driven in a preexisting mating screwthread or to accommodate a nut, insuring assembling of parts, with the part opposite the head acting as a nut, or insuring a grip between the bearing surface of its head and that of a nut screwed on its end. The threaded end may have a pilot for easier driving into a drilled hole. If the point is designed to prevent or restrict relative movements of parts see SETSCREW. Do not use if a more specific item name applies. If the item is furnished with attachments such as nut(s), washer(s), pin(s), and the like, see SCREW ASSEMBLY or BOLT (as modified).
Commercial and Government Entity Code (Supplier Data)
Reference Numbers (Part Numbers)