5930-01-654-3850

A cylindrical item which may have wrenching and/or driving facilities and/or shoulders. It is designed to be inserted in a drilled, tapped or a pretapped hole, or molded or pressed into soft material to reduce the size of a tapped hole; to provide threads; to add strength, and/or to prevent stripping. It is one of the following: (1) a one-piece, flanged or unflanged, internally threaded item which may have external threads, and/or serrations around the periphery of the collar, designed to engage a serrated lock ring which is not included with the item; (2) a one-piece precision coiled wire; (3) a two-piece item consisting of an internally threaded cylinder and a mating externally threaded part; or (4) a one-piece internally threaded item whose outside diameter is tapered and/or knurled and/or with fin(s). The internal thread of the item may have a locking feature. Excludes:items having a sleeve on on its under portion which can be clinched or crimped. Excludes:bushing,machine thread; nut,plain,knurled; nut,plain,round; nut,plain,clinch and nut,self-locking,clinch. See also nut,plain,plate

pressure actuated switch is designed for detection of a waterflow condition in automatic fire sprinkler systems such as wet systems with alarm check valves or dry pipe systems; 3.78 w x 3.20 d x 4.22 inch h; two knockouts provided for 1/2 inch conduit, individual switch compartments and ground screws suitable for dissimilar voltages; die-cast enclosure cover with textured red powdercoat finish, single cover screw and rain lip, base die-cast; nylon 1/2 inch npt male pressure connection; 4-8 psi adjustment; 2 psi typical differential; 300 psi max system pressure; switch contacts:two spdt (form c), 10.1 amps at 125/250 vac, 2 amps at 30 vdc; -40 to 140 degree f (-40 to 60 degree c) special features