ARP Individual Head Bolt/Stud Nut

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ARP replacement nuts for head bolts and studs. Nuts are available in 7/16"-20, 11mm x 1.25mm and 12mm x 1.25mm. Sold individually as needed, price is for one nut. Please confirm yo ur sizes before purchase. Black oxide 8740 chromoly nuts with 9/16 12-point socket.Includes:(1) Nut Part Number: Thread Size: Known Fitments: 300-8374 7/16"-20 EJ20/EJ25 Head Studs APN12-1 11mm x 1.25mm 4G63 7-Bolt Head Studs AUN12-1 12mm x 1.25mm 4G63 6-Bolt Head Studs4G63 Main Studs 301-8318 12mm x 1.25mm (BIG 5/8 12pt) Duramax 6.6L Kits(from 230-4201 and 230-4202) Discounts:We are sorry, discounts are not available for ARP products. See more ARP Products Show more