BS A 324:1998

This standard BS A 324:1998 Nuts, bihexagonal, self-locking, MJ threads, classifications: 1100 MPa (at ambient temperature)/425°C, 1100 MPa (at ambient temperature)/650°C, 1210 MPa (at ambient temperature)/425°C, 1210 MPa (at ambient temperature)/730°C, 1550 MPa (at ambient temperature)/235°C, 1550 MPa (at ambient temperature)/425°C and 1550 MPa (at ambient temperature)/600°C. Dimensions is classified in these ICS categories:

• 49.030.30 Nuts

This International Standard specifies the dimensions of bihexagonal nuts with counterbore and MJ threads and a self-locking feature achieved by forming the upper portion out-of-round, for classifications: 1 100 MPa ¹⁾/425 °C ²⁾, 1 100 MPa ¹⁾/650 °C ²⁾, 1 210 MPa ¹⁾/425 °C ²⁾, 1 210 MPa ¹⁾/730 °C ²⁾, 1 550 MPa ¹⁾/235 °C ²⁾, 1 550 MPa ¹⁾/425 °C ²⁾ and 1 550 MPa ¹⁾/600 °C ²⁾.

This International Standard is only applicable for the compilation of aerospace product standards.

Specifies the dimensions of bihexagonal nuts with counterbore and MJ threads and a self-locking feature achieved by forming the upper portions out of round.