Cite
HARVARD Citation
Institution,, B. (2023) BS EN 4073. Aerospace series. Screws, pan head, hexalobular recess, coarse tolerance shank, medium length thread in alloy steel, cadmium plated. Classification. 1 100 MPa (at ambient temperature) / 235 °C.. [Online]. London : British Standards Institution. Available from: http://access.bl.uk/ark:/81055/vdc_100186348499.0x000001