(200PCS ) FABORY 1/2"-13 Top Lock Zinc Grade C Steel Right Hand IFI-100/107 $49 Item Lock Nut Nut Style Top Lock System of Measurement Inch Basic Material Steel Fastener Finish Zinc Yellow Fastener Thread Direction Right Hand Fastener Thread Type UNC (Coarse) Dia./Thread Size 1/2"-13 Material Grade Grade C Width Across Flats 3/4 in Nut Standards IFI-100/107 Conical Top Lock Locknuts, also known as stover locknuts, have specially deformed threads that create 2 to 3 locking zones, to give this reusable, prevailing torque locknut extra holding power and help prevent rotation or loosening. The steel construction withstands higher temperatures than nylon locknuts. REALLY GOOD QUALITY. All items listed are identified as either new or used and the new may be older surplus. We list all items to the best of our ability and aim to provide the customer with as much information as possible. THIS IS A SUPER GOOD PRICE. ABAY ELECTRONICS GROUP is not liable for any products sold, the customer is responsible for proper testing, installation and use of equipment purchased. No warranties are expressed or implied.The sale of this item may be subject to regulation by the U.S. Food and Drug Administration and state and local regulatory agencies. If so, do not bid on this item unless you are an authorized purchaser. If the item is subject to FDA regulation, I will verify your status as an authorized purchaser of this item before shipping of the item. Domestic Shipping . We ship using UPS and FedEx to provide en-route package tracking.