DISCO Automotive Hardware ¥ OEM: N/A ¥ 12131PK ¥ S/Steel Nylon Insert Lock Nuts ¥ 5/16-18 (USS)1/2" Hx Size 18-8 ¥ Package Quantity: 25 Bag ¥ PACKAGING: All of our items are packaged in quantities listed by each of the items (individually or in bags). When ordering packaged items, please order by quantity of bags, not by number of pieces. Example: 1 bag #146PK is 100 pieces; do not order 100 bags of 146PK unless you desire 10000 pieces. Due to COVID, please allow 10 business days to ship from the manufacturer. SHOP ALL HERE.