Cite
MLA Citation
British Standards Institution,. 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.. London : British Standards Institution, 1994. http://access.bl.uk/ark:/81055/vdc_100104438126.0x000001