ASME B18-6-9:2010 pdf download

ASME B18-6-9:2010 pdf download.Wing Nuts (Inch Series)
1 INTRODUCTION
1.1 Scope This Standard covers complete general and dimen- sional data for nine various types and styles of wing nuts. Thumb screws and wing screws, recognized as American National Standard, are included in ASME B18.6.8. The inclusion of dimensional data in this Standard is not intended to imply that all the products described are stock production sizes. Purchasers should consult with suppliers concerning availability of products. 1.2 Comparison With ISO Standards There are no ISO standards at this time. 1.3 Dimensions All dimensions are in inch units. When specifying normal sizes, decimal zeros in the fourth place shall be omitted. 1.4 Terminology For definitions of terms, other than those defined below, relating to fasteners or components thereof used in this Standard, see ASME B18.12. wing nuts: a nut having wings designed for manual turn- ing without driver or wrench. The wing nuts covered by this Standard are classified, first, by type, on the basis of the method of manufacture; and second, by style, on the basis of design characteristics. They consist of the following:Type A: cold forged or cold formed solid nuts having wings of moderate height. In some sizes, they are pro- duced in regular, light, and heavy series to best suit the requirements of specific applications. Dimensions are given in Table 1. Type B: hot forged solid nuts available in two wing styles: Style 1, having wings of moderate height; and Style 2, having high wings. Dimensions are given in Table 2 and Table 3, respectively. Type C: die cast solid nuts and are available in three wing styles: Style 1, having wings of moderate height; Style 2, having low wings; and Style 3, having high wings. In some sizes, the Style 1 nuts are produced in regular and heavy series to best suit the requirements of specific applications. Dimensions are given in Tables 4, 5, and 6 for the respective styles. Type D: stamped sheet metal nuts and are available in three styles: Style 1, having wings of moderate height; Style 2, having low wings; and Style 3, having wings of moderate height and a larger bearing surface. In some sizes, Style 2 and Style 3 nuts are produced in regular, light, and heavy series to best suit the requirements of specific applications. Dimensions are given in Tables 7, 8, and 9 for the respective styles.
2 GENERAL DATA
2.1 Design Exceptforbearing surfaces, the details ofcontourshall be optional with the manufacturer, provided the speci- fied overall dimensions are maintained. 2.2 Bearing Surface The bearing surface of all types of wing nuts shall be at right angles to the axis of the threaded hole within a tolerance of 3 deg. The bearing surface shall be free from burrs, fins, and protruding surface irregularities. 2.3 Options Options, where specified, shall be at the discretion of the manufacturer, unless otherwise agreed upon by the manufacturer and the user. 2.4 Threads Threads shall be in conformance with ASME B1.1, Class 2B, for all types of wing nuts except Type D, which shall be Class 2B with a modified minor diameter. Because ofthe method ofmanufacture, the minordiame- ter of the thread in Type D nuts may be larger than the Class 2B maximum size, but in no case shall the minor diameter exceed the minimum pitch diameter size. Thread acceptability shall be determined using ASME B1.3, System 21.2.5 Material The materials applicable to the various wing nut types shall be as specified in the following paragraphs. 2.5.1 Types A, B, and D. Types A, B, and D wing nuts shall be supplied in carbon steel, brass aluminum, or other materials as agreed upon by the supplier and purchaser. 2.5.2 Type C. Type C wing nuts shall be made from a die cast zinc alloy such as UNS designation Z33520, Z35531, Z35541, or an alloy having similar properties. 2.6 Finish Unless otherwise specified, wing nuts shall be sup- plied with a plain (unplated or uncoated) finish.