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Part number: 641-1000
Product Details
ARP 641-1000 Differentials & Ring & Pinions
Products specifications
Fastener Finish Black oxide
Fastener Head Style 12-Point
Fastener Material Chromemoly
Fastener Yield Strength (psi) 170,000 psi
Material Black Oxide
Quantity Sold as a set of 5.
Size 5/16-18 x 1
Thread Size 5/16-18 in.
Underhead Length (in) 1.000 in.
Washers Included Yes
Wrench Diameter 3/8 in.
Wrenching 3/8
Standard 12Point Bolt
5Pieces

Now you can use premium quality ARP stainless steel or chrome moly fasteners to install most anything on a car, boat or trailer. The specially alloyed ARP 300 stainless steel and heat-treated 8740 chrome moly bolts (black oxide finish) are nominally rated at 180,000 psi tensile strength to provide a substantial extra margin of safety over Grade 8 hardware.

Whats more, you cant beat the gorgeous looks of ARPs specially polished stainless steel fasteners, and their ability to resist rust. Theyre truly maintenance free!

You can get 5-packs (washers included) of any diameter bolt from 1/4 to 1/2 or M6 to M12 in lengths ranging from 1/2 to 6, with ARP12-point heads. Matching nuts are also available

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