BS EN 3368-2008 pdf download.Aerospace series Aerospace design standard Holes for locating pins.
This BS EN 3368 provides particulars of hole sizes and associated fitting conditions to suit locating pins EN 3150 and EN 3151 series.
2 NormatIve references
The following referenced documents are indispensable for the application 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.
EN 3150, Aerospace series — Pins, shoulder, headless, in heat resisting nickel base alloy Nl-P100HT (Inconel 718)
EN 3151, Aerospace series — Dowels, plain, in heat resisting nickel base alloy Nl-PIOOHT (Inconel 718)
3 Locating pins
Table 1 gives the nominal locating pin diameters, their tolerance grade and tolerance sizes.
4 Hole sizes, positional tolerances and chamfer sizes
4.1 Refer to Figure 1 for typical callout.
4.2 Hole sizes shall be in accordance with Clause 1. Table 2 and Clause b, Table o.
4.3 Positional tolerances for holes shall be in accordance with Clause 7, Table 2, Clause 9, Table 4 and
Clause 10, Table 5.
4.4 Chamfers shall be in accordance with Figure 3.
5 Counterbore sizes
Counterbores shall be in accordance with Table 6 and Figure 4.
Counterbores are only applicable when using locating pins EN 3150 series.BS EN 3368-2008 pdf download.