Check the listing for details. Connect Copper Flashed Nut Flanged & Self Locking M8 x 1.25 x 10mm Hex 5pc 30742. Condition: New. Listed at 23.45 USD. A 5-piece pack of M8 x 1.25 pitch x 10mm Hex self-locking flanged nuts for use with exhaust manifold studs. The slight oval shape to these nuts provides anti-vibration properties and allows them to act as a self-locking nut, with it's full metal construction making it suitable for use on high temperature components. The flanged base allows for the pressure to be distributed over a greater contact area, with the copper flashing providing an anti-seize coating which helps to eliminate seizure on the manifold studs. The simplest and safest way for our customers to pay for items is through PayPal. This is the primary option on eBay and is the quickest way to complete postage. We do also accept credit and debit cards and you can find our details via the Business Details section on eBay to compl.