221. Circular flanges for pipes, valves and fittings (Class designated). Steel, cast iron and copper alloy flanges. Specification for steel flanges Part 3.1, (30th June 1989) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (58 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
222. Water well casing. Specification for thermoplastics tubes for casing and slotted casing Part 2, (30th September 1988) 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) ↗
223. Respiratory protective devices: threads for facepieces. Specification for centre thread connection Part 2, (28th September 1990) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (10 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
224. Specification for propeller shaft ends and bosses for inboard-engined pleasure craft. (29th June 1990) 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) ↗
225. Respiratory protective devices: threads for facepieces. Specification for standard thread connection Part 1, (28th September 1990) 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) ↗
226. Implants for osteosynthesis. Skeletal pins and wires. Specification for general requirements Part 6.1, (31st August 1990) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (10 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
227. Insulator and conductor fittings for overhead power lines. Specification for a range of fittings Part 2, (30th April 1990) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (88 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
228. Cross recessed machine screws. Specification for pan head screws of product grade A Part 1, (28th June 1991) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (10 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
229. Specification for nominal lengths of bolts, screws and studs and thread lengths for general purpose bolts. (30th November 1990) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (8 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
230. Specification for interface dimensions of flat face 'O'-ring seal hydraulic couplings. (30th April 1991) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (10 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗