<p>Oil Hard, Drill Rod, Steel Material, Fractional Size 21/64 In., Decimal Equivalent 0.3281 In., Dia. Tolerance +/-.0005 In., Finish 15 RMS Max, Length 36 In., Length Tolerance +.125 In./-.000 In., Hardness Scale 241 BHN Max, Grade O1, Standards UNS T31501, SAE J437, ASTM A-681-94, FEDERAL QQT-570 REV C</p> <p><br /><b>Features</b></p> <ul> <li>Decimal Equivalent: 0.3281&quot;</li> <li>Finish: 15 RMS Max</li> <li>Item: Oil Hard, Drill Rod</li> <li>Length: 36&quot;</li> <li>Material: steel</li> <li>Grade: O1</li> <li>Standards: UNS T31501, SAE J437, ASTM A-681-94, FEDERAL QQT-570 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: 21/64&quot;</li> </ul> <p></p>