BS ISO 8404:2021 pdf download – Tools for moulding — Angle pins
This document specifies the basic dimensions, in millimetres, of headed angle pins (type A), straight angle pins (type B), angle pins mounted with external thread (type C) and angle pins mounted with hexagon socket head cap screw (type D), intended for use in diecasting dies and tools for moulding.
It also specifies the material hardness and designation of the angle pins (types A, B, C and D).
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 2768-1, General tolerances — Part 1: Tolerances for linear and angular dimensions without individual tolerance indications
ISO 4957, Tool steels
3 Terms and definitions
No terms and definitions are listed in this document.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at
— IEC Electropedia: available at
4 Dimensions
4.1 Type A — Headed angle pins
The dimensions of headed angle pins shall be in accordance with the indications of Figure 2 and Table 1.
5 Material and hardness
Angle pins shall be made from tool steel in accordance with ISO 4957. The hardness values shall be as follows:
— shaft: (62 ± 2) HRC;
— head (type A): (45 ± 5) HRC.
NOTE Rockwell C hardness (HRC) is defined in ISO 6508 (all parts).
6 Designation
Angle pins for diecasting dies and tools for moulding in accordance with this document shall be designated by the following:
a) “Angle pin”;
b) a reference of this document, i.e. ISO 8404;
c) the type of angle pin (type A or B or C or D);
d) its diameter D 1 , in millimetres;
e) its length L 1 , in millimetres.BS ISO 8404 pdf download.