MATERIAL: Alloy steel 25CD4 or 35CD4 or equivalent, heat treated for 44 HRC.max.
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: - PROFILE: ISO M in accordance with NFL 05-220 or AICMA 0501A.
- TOLERANCES: in accordance with NFL 05-224 or AICMA 2011A.
TOLERANCES OF FORM AND POSITION: In accordance with ISO 8788.
MARKING: - SD in accordance with NF L 22-036 on the area indicated on the drawing.
QUALIFICATION AND ACCEPTANCE CONDITIONS: NFL 22-500 or AICMA 2053.
OPTION : Metal cap : Add code B after the type of the nut (ex. : 6GMB109M).
Contact Howmet for the diameter/type in manufacturing.