ISO 4042 pdf download

ISO 4042 pdf download.Fasteners — Electroplated coatings 1 Scope This International Standard specifies dimensional requirements for electroplated fasteners of steel or copper alloy. It specifies coating thicknesses and gives recommendations for hydrogen embrittlement relief for fasteners with high tensile strength or hardness and for surface-hardened fasteners. This International Standard primarily concerns the electroplating of threaded fasteners, but it may also be applied to other threaded parts. For the applicability to screws that cut or form their own mating threads, see clause 8. The specifications given in this International Standard may also be applied to non-threaded parts such as washers and pins. 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 965-1 :1 999, ISO general purpose metric screw threads — Tolerances — Part 1 : Principles and basic data. ISO 965-2:1 999, ISO general purpose metric screw threads — Tolerances — Part 2: Limits of sizes for general purpose bolt and nut threads — Medium quality . ISO 965-3:1 999, ISO general purpose metric screw threads — Tolerances — Part 3: Deviations for constructional threads . ISO 1 456:1 988, Metallic coatings — Electrodeposited coatings of nickel plus chromium and of copper plus nickel plus chromium. ISO 1 458:1 988, Metallic coating — Electrodeposited coatings of nickel . ISO 1 502:1 996, ISO general purpose metric screw threads — Gauges and gauging . 3 Terms and definitions For the purposes of this International Standard, the definitions given in ISO 2064 (in particular, the definitions of significant surface, measuring area, local thickness and minimum local thickness) and ISO 3269 together with the following, apply. 3.1 batch quantity of identical fasteners from the same manufacturing lot processed together at one time 3.2 production run those batches of parts processed continuously without any changes in coating techniques or constituents 3.3 batch average thickness calculated average thickness of a coating if it was uniformly distributed over the surface of the parts of the...