ISO 4147:1997
Aerospace — Nuts, hexagonal, slotted (castellated), normal height, normal across flats, with MJ threads, classifications: 600 MPa (at ambient temperature)/120 degrees C, 600 MPa (at ambient temperature)/235 degrees C, 900 MPa (at ambient temperature)/425 degrees C, 1 100 MPa (at ambient temperature)/235 degrees C, 1 100 MPa (at ambient temperature)/315 degrees C, 1 100 MPa (at ambient temperature)/650 degrees C, 1 210 MPa (at ambient temperature)/730 degrees C, 1 250 MPa (at ambient temperature)/235 degrees C and 1 550 MPa (at ambient temperature)/600 degrees C — Dimensions
ISO 3223:1989
Aerospace — Nuts, anchor, self-locking, fixed, two-lug, with counterbore, with MJ threads, coated or uncoated, classification 1 100 MPa/ 235 degrees C, 1 100 MPa/315 degrees C or 1 100 MPa/425 degrees C — Dimensions
