Aerospace - Nuts, hexagonal, plain, normal height, normal across flats, with MJ threads, classifications: 600 MPa (at ambient temperature)/120 掳C, 600 MPa (at ambient temperature)/235 掳C, 900 MPa (at ambient temperature)/425 掳C, 1 100 MPa (at ambient temperature)/235 掳C, 1 100 MPa (at ambient temperature)/315 掳C, 1 100 MPa (at ambient temperature)/650 掳C, 1 210 MPa (at ambient temperature)/730 掳C, 1 250 MPa (at ambient temperature)/235 掳C and 1 550 MPa (at ambient temperature)/600 掳C - Dimensions - Third Edition