ISO 1302-2002 pdf download.Geometrical Product Specifications (GPS) – Indication of surface texture in technical product documentation.
ISO 1302 specifies the rules for the indication of surface texture in technical product documentation (e.g. drawings, specifications, contracts, reports) by means of graphical symbols and textual indications.
It is applicable to the indication of requirements for surfaces by means of
a) profile parameters, according to ISO 4287, related to the
R-profile (roughness parameters),
W-profile (waviness parameters), and
— P-profile (structural parameters),
b) motif parameters, according to ISO 12085, related to the
— roughness motif, and
— waviness motif,
c) parameters related to the material ratio curve according to ISO 13565-2 and ISO 13565-3.
NOTE For the indication of requirements fOr surface imperfections (pores, scratches etc.), which cannot be specified using surface texture parameters, reference is made to ISO 8785, which covers surface imperfections.
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 1291: 1). Technical drawings — Indication of dimensions and tolerances — Part 1: General principles
ISO 1101: 2), Geometrical Product Specifications (GPS) — Geometrical tolerancing — Tolerancing of fomi, orientation, location and run-out
3 Terms and definitions
For the purposes of this International Standard, the terms and definitions given in ISO 3274, ISO 4287, ISO 4288,ISO 10209-1, ISO 11562, ISO 12085, ISO 13565-2, ISO 13565-3, ISO 14660-1 and the ollowing apply.
3.1 basic graphical symbol (surface texture)graphical symbol indicating that a requirement for surface texture exists See Figure 1.
3.2 expanded graphical symbol (surface texture) expanded basic graphical symbol indicating that material is either to be removed or not removed in order to obtain the specified surface texture See Figures 2 and 3.
3.3 complete graphical symbol (surface texture) basic or expanded graphical symbol expanded in order to facilitate the addition of complementary surface texture requirements See Figure 4.
3.4 surface (texture) parameter parameter expressing a micro-geometrical property of a surface
NOTE  See annex E for examples of surface texture parameter designations.
3.5 (surface) parameter symbol symbol indicating the type of surface texture parameter
4 Graphical symbols for the Indication of surface texture
4.1 General
Requirements for surface texture are indicated on technical product documentation by several variants of graphical symbols, each having its own significant meaning. The graphical symbols specified in 4.2 and 4.3 shall be supplemented with complementary surface texture requirements in the form of numerical values, graphical symbols and text (see also clauses 5, 6, 7 and 8). Attention is drawn to the fact that, in particular instances, the graphical symbols may be used alone to convey a special meaning on the technical drawing (see dause 11).
4.2 Basic graphical symbol
The basic graphical symbol shall consist of two straight lines of unequal length inclined at approximately 600 to the line representing the considered surface, as shown in Figure 1. The basic graphical symbol in Figure 1 should not be used alone (without complementary information). Its use shall be to provide collective indications as shown in Figures 23 and 26,
If the basic graphical symbol is used with complementary, supplemental information (see clause 5), then no further decision is required as to whether removal of material is necessary for obtaining the specified surface (see 4.3.1) or whether removal of material is not permitted for obtaining the specified surface (see 4.3.2).ISO 1302 pdf download.