ISO 4753 pdf download.Fasteners — Ends of parts with external ISO metric thread
1 Scope
This International Standard specifies the form and dimensions of ends of parts with external ISO metric screw thread (e.g., bolt and screw ends) recommended for use. They apply to standardized or non-standardized threaded parts if they are specified at the time of order. For each end type a symbol is specified and it is recommended to use these symbols when specifying one of the ends for threaded fasteners.
2 Normative references
The following normative documents contain provisions which, through reference in this text, constitute provisions of this International Standard. For dated references, subsequent amendments to, or revisions of, any of these publications do not apply. However, parties to agreements based on this International Standard are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest edition of the normative document referred to applies. Members of ISO and IEC maintain registers of currently valid International Standards. ISO 225:1 983, Fasteners — Bolts, screws, studs and nuts — Symbols and designations of dimensions. ISO 4027:1 993, Hexagon socket set screws with cone point.
3 Dimensions
See Figures 1 and 2 and Tables 1 to 4. Symbols and designations of dimensions are specified in ISO 225.