Description
Brand: ARP
Manufacturer’s Part Number: 640-4000
Part Type: Bolts and Screws
Product Line: ARP Chromoly Bolts
Automotive Fittings Part Number: ARP-640-4000
UPC: 672036019792
Fastener Type: Bolt
Thread Size: 1/4 in.-20
Fastener Head Style: Flanged 12-point
Underhead Length (in.): 4.000 in.
Fastener Material: Chromoly
Fastener Color: Black
Fastener Grade: ARP Custom 450
Fastener Tensile Strength (psi): 180,000 psi
Wrench Diameter: 5/16 in.
Washers Included: Yes
Quantity: Sold as a set of 5.
Description:
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, head styles, and other options.
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