<p>Lock Nut, Nut Style Round Knurled Thumb Nut, System of Measurement Inch, Steel, Fastener Finish Black Oxide, Fastener Thread Direction Right Hand, Fastener Thread Type UNC, Dia./Thread Size 1/2 In.-13, Width Across Flats 1-1/4 In., Nut Height 7/16 In., Flange Dia. 1.000 In.</p> <p><br /><b>Features</b></p> <ul> <li>Item: Lock Nut</li> <li>Flange Dia.: 1.000&quot;</li> <li>System of Measurement: Inch</li> <li>Basic Material: Steel</li> <li>Dia./Thread Size: 1/2&quot;-13</li> <li>Fastener Finish: Black Oxide</li> <li>Fastener Thread Direction: Right Hand</li> <li>Width Across Flats: 1-1/4&quot;</li> <li>Nut Style: Round Knurled Thumb Nut</li> </ul> <p></p>