Cite
HARVARD Citation
Institution,, B. (2023) BS EN 2939. Aerospace series. Screws, 100° countersunk head, offset cruciform recess, threaded to head, in heat resisting steel FE-PA92HT (A286). Classification. 900 MPa (at ambient temperature)/650 °C.. [Online]. London : British Standards Institution. Available from: http://access.bl.uk/ark:/81055/vdc_100179584161.0x000001