<p>Water Hard, Drill Rod, Steel Material, Fractional Size 5/16 In., Decimal Equivalent 0.3125 In., Dia. Tolerance +/-.0005 In., Finish 15 RMS Max, Length 36 In., Length Tolerance +.125 In./-.000 In., Hardness Scale 241 BHN Max, Grade W1, Standards UNS T72301, SAE J437, ASTM A-686-92, FEDERAL QQT-580 REV C</p> <p><br /><b>Features</b></p> <ul> <li>Decimal Equivalent: 0.3125&quot;</li> <li>Finish: 15 RMS Max</li> <li>Item: Water Hard, Drill Rod</li> <li>Length: 36&quot;</li> <li>Material: steel</li> <li>Grade: W1</li> <li>Standards: UNS T72301, SAE J437, ASTM A-686-92, FEDERAL QQT-580 REV C</li> <li>Length Tolerance: +.125&quot;/-.000&quot;</li> <li>Dia. Tolerance: +/-.0005&quot;</li> <li>Hardness Scale: 241 BHN Max</li> <li>Fractional Size: 5/16&quot;</li> </ul> <p></p>