ASME B1.5 PDF

Description

This Standard provides for two general applications of Acme threads: namely, general purpose and centralizing.
Standard provides two general applications acme threads: namely, purpose centralizing. limits tolerances relate single-start threads may used, considered suitable, multiple-start threads. latter used provide relatively fast traversing motion necessary. three classes (2g, 3g, 4g) clearances diameters free movement. thread relies flanks maintain concentric operation. centralizing limited clearance major external internal bearing diameter maintains approximate alignment axis prevents wedging combination covered standard, end play backlash will result. unavoidable interchangeable products. objectionable, mechanical means provided eliminate condition. case, sufficient must left close running fit. addition limiting dimensions series pitches threads, tables tolerances, terms pitch diameter, wide choice given pitch. using formulas increments, special can determined class. data also allowances minor tolerances. appendices text following: (a) alternate threads; (b) (c) class 5g; (d) 5c 6c; (e) three-wire method measurement 29 deg screw (f) ball methods (g) go gage compensation, calculation flank angle, limit gaging setting rings, problem areas; (h) gages 5 in.; (i) determining size diameter/pitch combinations.