BS/EN 4138-2016 pdf download.Aerospace series Screws, pan head, offset cruciform recess, coarse tolerance normal shank, medium length thread, in alloy steel, cadmium plated Classification: 1100 MPa (at ambient temperature) / 235 °C.
This BS/EN 4138 specifies the characteristics of screws, pan head, offset cruciform recess, coarse tolerance normal shank, medium length thread, in alloy steel, cadmium plated.
Classification: 1 100 MPa1) / 235 oc2)
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 2133, Aerospace series — Cadmium plating of steels with specified tensile strength ≤ 1 450 MPa,
copper, copper alloys and nickel alloys
EN 2137, Steel FE-PL7S — 1100 MPa ≤ Rm ≤ 1250 MPa — Bars De ≤ 100mm — Aerospace series
EN 2424, Aerospace series — Marking of aerospace products
EN 2442, Steel FE-PL71 1 —1100 MPa ≤ Rm ≤ 1300 MPa — Bars and wires — De ≤25 mm3)
EN 3514, Steel FE-PL 711 — Hardened and tempered — 1100 MPa s Rm ≤ 1300 MPa — Bar and wire for bolts — De ≤ 25 mm
EN 9100, Quality Management Systems — Requirements forAviation, Space and Defense Organizations
EN 9133, Aerospace series — Quality management systems — Qualification procedure for aerospace standard parts
ISO 3353-1, Aerospace — Lead and runout threads — Part 1: Rolled external threads Iso 5855-2, Aerospace — Mi threads — Part 2: Limit dimensions for bolts and nuts
ISO 7689,Aerospace — Bolts, with MJ threads:, made of alloy steel, strength class 1 100 MPa — Procurement specification
I SO 7913, Aerospace — Bolts and screws, metric — Tolerances ofform and position
Iso i 4275, Aerospace — Drives, internal, offcet cruciform, ribbed — Metric series
ISO 14276, Aerospace — Drives, internal, ofiset cruciform — Metric series
TR 3775, Aerospace series — Bolts and pins — Materials
3 Required characteristics
3.1 Configuration — Dimensions — Masses
See Figure 1 and Table 1.
Dimensions and tolerances are expressed in millimetres and apply after surface treatment.
3.2 Tolerances of form and position
ISO 7913.
3.3 Materials
EN 2137 and EN 2442
TR 3775: alloy steeL classification 1100 MPa.
6 Technical specification
6.1 General
ISO 7689, except for clauses.
6.2 Approval of manufacturers
EN 9100.
6.3 Qualification of screws
EN 9133.BS/EN 4138-2016 pdf download.