21. Aerospace series. Spiral drive recesses for threaded fasteners. Geometrical definition and technical requirements. (14th November 2019) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (18 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
22. Aerospace series. Steel X12CrNiMoV12-3 (1.4938). Air melted and consumable electrode remelted. Hardened and tempered. Bars. De ≤ 150 mm. 900 MPa ≤ Rm ≤ 1 100 MPa. (18th May 2021) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (12 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
23. Aerospace series. Surface treatments. Test method for measurement of electrical contact resistance. (20th January 2020) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (12 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
24. BS EN 2002-001. Aerospace series. Metallic materials. Test methods. Part 001. Tensile testing at ambient temperature (28th January 2021) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (31 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
25. BS EN 4860. Aerospace series. Environmental testing. Test Xb: Abrasion of markings, letterings, surfaces and materials caused by rubbing of fingertips and hands. (16th January 2020) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (21 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
26. BS EN 4881. Aerospace series. Micro-arc oxidation of aluminium and aluminium alloys. (20th May 2021) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (26 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
27. BS ISO 16840-11. Wheelchair seating. Part 11. The determination of dissipation characteristics of sensible perspiration into seat cushions (11th August 2021) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (14 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
28. BS ISO 16840-12. Wheelchair seating. Part 12. Envelopment and immersion characterization of seat cushions using a dual semispherical indenter (22nd February 2021) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (22 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
29. BS ISO 20975-1. Fibre-reinforced plastic composites. Determination of laminate of through-thickness properties. Part 1. Direct tension and compression tests (8th March 2022) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (27 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
30. BS ISO 3934. Rubber, vulcanized and thermoplastic. Preformed gaskets used in buildings. Classification, specifications and test methods. (25th May 2020) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (25 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗