Builder's hardware; a manual for architects, builders and house furnishers . are the same as ordinary wood-screws, but thehead is square, like a nut, and without any cross-cut, so thatthe screw can be turned up with a wrench. The precedingtable gives the prices of a few of the sizes, as per the lists ofthe American Screw Hand-rail screws or joint-bolts are usually made in two ways, either with one endcut with a wood-screwthread, and the otherprovided with a ma-chine - screw threadand loose nut, or witha machine- screwthread and nut oneach end. One nutis generally coggedso it ca
Builder's hardware; a manual for architects, builders and house furnishers . are the same as ordinary wood-screws, but thehead is square, like a nut, and without any cross-cut, so thatthe screw can be turned up with a wrench. The precedingtable gives the prices of a few of the sizes, as per the lists ofthe American Screw Hand-rail screws or joint-bolts are usually made in two ways, either with one endcut with a wood-screwthread, and the otherprovided with a ma-chine - screw threadand loose nut, or witha machine- screwthread and nut oneach end. One nutis generally coggedso it can be turnedup easily by a pock-Fig. 19. joint-boits. et wrench. Joint-bolts are of two diameters, either j\ or f-inch, and the stand-ard lengths are from four to six inches, though some manu-facturers produce joint-bolts as long as fifteen inches. Joint-bolts with two nuts are sometimes made with T7^-inch diameterwith a swelled centre. Figure 19 shows the various formsof joint-bolts, and the following table gives the prices per gross. TABLE OF JOINT-BOLTS. Discount: 75%.. Diam. 5 163 ¥ 16 Length, 4 inches. Length, 4-J inches. Length, 5 inches. Length, 5J inches. Length, 6 inches. Onenut. Twonuts. Swelid centre Onenut. Two nuts. Swelidcentre. Onenut. Two nuts. Swelidcentre. One nut. Twonuts. Swelidcentre. One nut. Twonuts. Swelidcentre. $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ SCREWS. 29 Screw-eyes are too well-known to require illustration. Theyare made of steel, iron or brass wire, with a gimlet-pointedthread cut on the shank. Iron screw-eyes are made plain,bright, bronzed or nickel-plated. The diameters of wire usedvary from wire guage 0, to 14, the lengths of the eyes beingfrom \\ to 2-§- inches. The list price in iron of the largestsizes is $ per gross. The smallest size cost 95 cents pergross. Brass screw-eyes cost about twice as much as prices are with a heavy dis
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Keywords: ., bookcentury1800, bookdecade1890, bookidbuildershard, bookyear1890
