ARP 1/4"-20 x 3.250 12pt black oxide bolts (640-3250) U-Bolts ARP Chromoly Bolts 746-2250

ARP Chromoly Bolts 746-2250

7mm Valve Head Diameter 32mm Valve Type Exhaust Valve Stem Diameter 6

All March kits are developed with superior styling in mind

25 in (921 mm)

ARP 1/4"-20 x 3.250 12pt black oxide bolts (640-3250) U-Bolts ARP Chromoly Bolts 746-2250ARP 1 4" 20 x 3. 250 12pt black oxide bolts (640 3250) ARP Chromoly Bolts 640 3250 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,