<p>Socket Flat Head Cap Screw, System of Measurement Inch, Flat, Basic Material Steel, Material Grade Alloy Steel, 5/16 In.-18, Length 2-1/2 In., Fastener Finish Plain, Fastener Thread Type UNC, Drive Type Hex Socket, Drive Size 3/16 In., Thread Style Partially Threaded, Thread Direction Right Hand, Thread Length 1-1/8 In., Head Height 5/16 In., Thread Dia. 5/16 In., Package Quantity 25</p> <p><br /><b>Features</b></p> <ul> <li>Item: Socket Flat Head Cap Screw</li> <li>Length: 2-1/2&quot;</li> <li>Temp. Range: - 58 Degrees F to 302 Degrees F</li> <li>Drive Size: 3/16&quot;</li> <li>Drive Type: Hex Socket</li> <li>Thread Length: 1-1/8&quot;</li> <li>Thread Style: Partially Threaded</li> <li>Rockwell Hardness: C37 to C44</li> <li>Thread Direction: Right Hand</li> <li>Head Dia.: 7/16&quot;</li> <li>Head Height: 5/16&quot;</li> <li>Min. Tensile Strength: 135,000 psi</li> <li>System of Measurement: Inch</li> <li>Basic Material: Steel</li> <li>Thread Dia.: 5/16&quot;</li> <li>Dia./Thread Size: 5/16&quot;-18</li> <li>Vented Hole Size: Not Vented</li> <li>Material Grade: Alloy Steel</li> <li>Fastener Finish: Plain</li> <li>Fastener Thread Type: UNC</li> <li>Screw Industry Standards: ASME B18.3</li> <li>Screw Style: Socket Head Cap Screw</li> <li>Screw Head Type: Flat</li> </ul> <p></p>