SQUARE DRIVE RECESS (ROBERTSON DRIVE) SCREWS

Table 1 Dimensions and Recommended Driver Size for Square Socket Drives Nominal Screw Size M T Driver Size F Recess Square Recess Depth Gauge Penetration Max Min Max Min Max Min 3 0.0860 0.0710 0.0696 0.073 0.063 0 0.038 0.032 …

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