BS EN 3726-2004 pdf download.Nuts, self-locking, clip, in heat resisting steel FE-PA2601 (A286), MoS₂ coated Classification: 1 100 MPa (at ambient temperature) / 425 °C.
This standard specifies the characteristics of self-locking clip nuts in FE-PA2601. MoS2 coated, for aerospace applications.
Classification: 1100 MPa 1)1425°C 2)
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.
ISO 5855-2, Aerospace — MJ threads — Part 2: Limit dimensions fox bolts and nuts
EN 2424, Aerospace series – Marking of aerospace products
EN 2491, Aerospace series — Molybdenum disulphide dry lubricants — Coating methods
EN 3638, Aerospace series – Heat resisting alby FE-PA2601 (X6NiCrTiMoV26-15) – Consumable electrode remelted — Solution and precipitation treated — Sheet, strip and plate — 0,5 mm ≤a ≤ 10 mm 3)
EN 3639, Aerospace series — Heat resisting alloy FE-PA2601 – Softened and cold worked – Wire kx forged fasteners – D ≤ 15mm – 900 MPa ≤Rm ≤ 1100 MPa 3)
EN 3752, Aerospace series — Nuts, self-locking. MJ threads, in heat resisting steel FE-PA2601 (A 286), MoS2 coated — ClassifIcation: 1100 MPa (at ambient temperature) /425 °C — Technical specification
3 Required characteristics
3.1 Configuration — Dimensions — Tolerances — Masses
The configuration of the clip nut in this standard, see Figure 1, is given as an example only. Forms not stated are at the manufacturer’s option. Only the maximum overall dimensions given in the Table 1 and the interchangeability requirements are imposed. The minimum dimensions are limited by the requirements of the technical specification.
Dimensions and tolerances are in millimetres. They apply before MoS2 coating.
3.2 Materials
Nut element: EN 3638 or EN 3639
Marking
EN 2424 , style F , as indicated on Figure 1
Technical specification
EN 3752.BS EN 3726-2004 pdf download.