B1894
Nut, Aircraft Propeller hub
General Characteristics Item Description: Steel, spec data, sae, 4130, 4135 or 4140, no type designator; cadmium plated finish; shaft no. 40; thd data, 2 5/16 /2.312/ IN-12 nom size designation, nonstandard, class 4B thd or class 4 fit, 0.750 in. lg; dim. data, 2.344 in. id unthreaded portion, 2.900 in. od at hub end, 2.740 in. od at forward end, 1.920 in. H O/a, 0.4375 in. dia wrenching holes
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