1. Drills and reamers. Specification for the dimensions of countersinks and counterbores Part 5, (29th July 1983) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (16 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
2. Drills and reamers. Counterbores with parallel shanks and solid pilots Part 7, (15th July 1992) 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) ↗