ARP 5/16"-18 x 4.000 12pt black oxide bolts (641-4000) Gauges & Dashes All stud lengths are measured

All stud lengths are measured from the base of the knurl to the end of the stud

- IMPROVED Builtin Nitrous Control supports wet/dry nitrous

Part Number: AR203-6001

UPC: 00793348067872

and affordability

ARP 5/16"-18 x 4.000 12pt black oxide bolts (641-4000) Gauges & Dashes All stud lengths are measuredARP 5 16" 18 x 4. 000 12pt black oxide bolts (641 4000) ARP Chromoly Bolts 641 4000 Now you can use premium quality ARP chromoly bolts to install most anything on a car, boat, or trailer. These specially heat treated 8740 chromoly fasteners feature a black oxide finish. They're nominally rated at 180,000 psi tensile strength to provide a substantial extra margin of safety over Grade 8 hardware. The bolts are available in a wide range of thread sizes,