BS 869:1978
Current
The latest, up-to-date edition.
Specification for toolmakers\' flats and high precision surface plates
Hardcopy , PDF
English
31-01-1978
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Foreword
Cooperating organizations
Specification
1. Scope
2. References
3. Material
4. Features of design and recommended sizes
5. Finish
6. Accuracy
7. Cases for flats
8. Covers for plates
9. Preservation and packing
10. Marking
Appendix
A. Compositions of some typical steels and cast
irons and notes on the appropriate methods of heat
treatment
Tables
1. Dimensions of flats and plates
2. Tolerances
Figure
1. Toolmakers' flat showing recess in base and groove
round periphery
Circular hardened steel or granite toolmakers\' flats up to 200 mm diameter and circular cast iron or granite high precision surface plates 250 and 400 mm diameter. Material, general design, finish, accuracy, cases, packing and marking. Composition of typical steels, cast irons and heat treatment.
| Committee |
TPR/1
|
| DevelopmentNote |
Supersedes 72/33731 DC and BS 869(1939) (10/2005) Reviewed and confirmed by BSI, February 2012. (01/2012)
|
| DocumentType |
Standard
|
| Pages |
10
|
| PublisherName |
British Standards Institution
|
| Status |
Current
|
This British Standard is applicable to circular hardened steel toolmakers’ flats having a maximum diameter of 200 mm, and to cast iron or granite high precision surface plates having a maximum diameter of 400 mm.
| BS 1133-6(1966) : 1966 | PACKAGING CODE - TEMPORARY PROTECTION OF METAL SURFACES AGAINST CORROSION (DURING TRANSPORT AND STORAGE) |
| BS 427-1:1961 | Method for Vickers hardness test Testing of metals |
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