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:
TOLERANCES OF FORM AND POSITION:
- PROFILE: ISO M in accordance with NFL 05-220 or AICMA 0501A.
- TOLERANCES: in accordance with NFL 05-224 or AICMA 2011A.
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.