MATERIAL: Alloy steel 25CD4 or 30CD4 in accordance with TR 3791, heat treated for 40-43 HRC.
SURFACE TREATMENT: Cadmium plate 5µm mini in accordance with EN 2133 + dry film lubricant in accordance with EN 2491
CLASSIFICATION: 900 Mpa (at ambient temperature) / 235°C.
THREAD: MJ in accordance with ISO 5855-2
TOLERANCES OF FORM AND POSITION: In accordance with ISO 8788.
MARKING: MJ in accordance with EN 2424 – Category F, on the area indicated on the drawing.
QUALIFICATION AND ACCEPTANCE CONDITIONS: NFL 22500.
Contact Alcoa for the diameter/type in manufacturing.