C40AC5
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Hex heads with three markings are grade 5 fasteners. This grade is made from medium quality carbon steel. These are commonly used in automotive applications. Grade 5 cap screws are hardened. During manufacturing, they are heated in order to strengthen the outside of the screw.
Since 1975, we've been serving thousands of customers across the U.S. and with over 5,000 different part numbers from more than 75 manufactures we're confident we have the parts you need. All parts are ready for immediate delivery.
K&N carries a full line of electrical terminals from 22 ga. thru 4/0, wire, cable, fuses, fasteners, cable ties, storage bins, brass parts, chemicals, abrasives and numerous other shop supplies.
If you need it, we're pretty sure we have it.
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