Item:Oil Hard, Drill Rod; Material:Steel; Fractional Size:13/64 In; Decimal Equivalent:0.2031 In; Dia. Tolerance:+/-0.0005 In; Finish:15 Rms Max; Length:36 In; Length Tolerance:+0.125 In/-0.000 In; Hardness Scale:275 Bhn Max; Grade:O1; Standards:Uns T31501, Sae J437, Astm A-681-94, Federal Qqt-570 Rev C;