screw bolt (skroʻbolt)

A square or cylindrical piece of iron, with a knob or flat head at one end and a screw at the other. It is adapted to pa through holes made for its reception in two or more pieces of timber, metal, etc., to fasten them together by means of a nut screwed on the end that is opposite to the knob or head. See cuts under bolt and screw. screw-box (skrö'boks), n. A device for cutting the external threads on wooden screws, simi- lar in construction and operation to the screw- plate. screw-burner (skröʻbėr nėr), n. In lamps: (a) wick. (b) A burner which is attached by a screw-thread to the socket of the lamp-top. E. H. Knight. screwl (skrö), v. [Formerly also scrue ; = D. schroeven MLG. schruven = G. schrauben = Icel. skrúfa = Sw. skrufva = Dan. skrue , screw; from the noun.] I. trans. 1. To turn, move, A burner having a screw to raise and lower the tighten, fasten, pre , or make firm by a screw, or by giving a turn to a screw; apply a screw to, for the purpose of turning, moving, tightening, fastening, or pre ing: as, to screw up a screw-caliper (skröʻkali-pèr), п.. A caliper bracket; to screw a lock on a door; to screw a pre . in which the adjustment of the points is made by a screw. E. H. Knight. in the form of a collar with an internal screw thread at each end, for joining the ends of two vertical rods or chains and giving them any desired degree of tension; a screw-socket for uniting pipes or rods.