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Show a AUTO LESSON NO. 11-2. Bolts and Nuts. j Tii ere arc rob;il!y :i thousand or j more Imli-j find nnt.-i on tlic automobile. ! it thec bolls or t!io.-e nuts become loose they will not do thr-.t for which! Jiey have been furnished. Yot this ; reason a nut or bolt must never he ui i in wit lion t some t huup ht iei ven : them must not be used uuder certain conditions. The most commonly used looking device de-vice (opuinr because it is simple iind cheap), is the spring loek-w;ish shown of I'iure . It is also called a "split-washer.' "split-washer.' This, as e;m be seen, is a split washer, made of tempered st?cl, the split ends or' which have been ben' so that they point in opposite direction. The washer, lettered A. is simply i i y ipif WMjf) I I Vrjo. j |