Downloaded from https://www.everyspec.com MIL-sTD-1312B % -l~~F1-’” . .. /, / .. /. \ ____ -c —--- @ .093 *.010 x L UND E R C U T T O ROO T O F T HR EA D S NOTES: 1. Unless otherwise specified, tolerances ~.030, Angles ~2° . 2. Surface texture: 125 micloinches, in accordance with ANSI 1346.1. 3. Material: AISI 4340, H-n, maraging, or 17-4PH. 4. Dimensions marked with an asterisk are optional. 5. Heat treat: 35 HRC minimum. 6. Unless otherwise specified, dimensions in inches. FIGURE 7. HOlding fixture, fatigue 250 , 000 pound capacity. 25