ASTMF788-2002.pdfVIP

Designation: F 788/F 788M – 02 Standard Specification for Surface Discontinuities of Bolts, Screws, and Studs, Inch and Metric Series1 This standard is issued under the fixed designation F 788/F 788M; the number immediately following the designation indicates the year of original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A superscript epsilon () indicates an editorial change since the last revision or reapproval. This standard has been approved for use by agencies of the Department of Defense. 1. Scope* 2. Referenced Documents 1.1 This specification establishes allowable limits for the 2.1 ASTM Standards: various types of surface discontinuities that may occur during E 340 Test Method for Macroetching Metals and Alloys2 the manufacture and processing of bolts, screws, and studs, F 1470 Standard Guide for Fastener Sampling for Specified including heat-treated machine screws, tapping screws, and Mechanical Properties and Performance Inspection3 sems (the washers of screw-washer assemblies are excluded). F 1789 Standard Terminology for F16 Mechanical Fasten- This specification covers metric series products with nominal ers3 diameters of 4 mm and larger and with specified minimum 2.2 ISO Standard:4 tensile strengths of 800 MPa and greater; and inch series ISO 6157/I Fasteners, Surface Discontinuities on Bolts, products with nominal diameters of No. 5 (0.1250 in.) and Screws and Studs larger and with s