<p>Thumb Screw, Knurled With Shoulder Head, Steel, Thread Size 10-32, Length 5/16 In, Head Diameter 0.500 In, Head Height 0.219 In, Shoulder Dia 0.375 In, Screw Shoulder Length 0.094 In, Class 2A, Rockwell Hardness B68-B71, Tensile Strength 57,000 PSI, Finish Black Oxide</p> <p><br /><b>Features</b></p> <ul> <li>Finish: black oxide</li> <li>Item: Thumb Screw</li> <li>Length: 5/16&quot;</li> <li>Material: steel</li> <li>Thread Size: 10-32</li> <li>Class: 2A</li> <li>Head Type: Knurled</li> <li>Tensile Strength: 57,000</li> <li>Rockwell Hardness: B68 to B71</li> <li>Shoulder Dia.: 3/8&quot;</li> <li>Head Dia.: 1/2&quot;</li> <li>Head Height: 7/32&quot;</li> <li>Shoulder Length: 3/32&quot;</li> <li>System of Measurement: Inch</li> </ul> <p></p>