1. BS EN 4012. Aerospace series. Nuts, bihexagonal, self-locking, in heat resisting nickel base alloy NI-PH2601 (Inconel 718), MoS2 coated. Classification: 1 550 MPa (at ambient temperature) / 425 °C. (29th June 2023) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (9 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗