Special Features:

Steel, spec data, sae, 1112; zinc dichromate finish; casehardened; dim. Data, 1.06 in. Lg over-all, 0.43 in across hex flats, 0.18 in. Lg hex, 0.88 in. From valve end to nearest hex shoulder; thd type hose connector, thd data, no. 10-32, nf, rh, class 2 fit, 0.44 in. Lg; valve seat end data, 0.271 in. Min 0.281 in. Max largest od of taper, 0.120 in. Lg taper, 0.280 in. Lg excl thd portion, 0.230 in. From center of inlet hole to valve end, 1/16 in. Diameter inlet hole, external thd data, 3/8-24, unf or nf, rh, class 2a thd or class 2 fit, 0.470 in. Lg; drain hole data, 0.147 in. Dia, 0.880 in. Lg

Properties:

A metallic, threaded, screw-shaped item used in hydraulic brake cylinders, hydraulic power units, missile launching hydraulic systems, and the like, for the purpose of providing a means of releasing air form and/or flushing a hydraulic system. It may be furnished with or without a dust cap. Excludes spring loaded or automatic type air pressure relief valves, and bolt, fluid passage.