BS 2558:1954
Current
The latest, up-to-date edition.
Specification for tubular box spanners
Hardcopy , PDF
English
31-12-1954
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Foreword
Specification
1. Scope
2. Material for spanners
3. Material for tommy bars
4. Heat treatment and hardness for Grade A spanners
5. Tommy bar holes
6. Designation and marking
7. Finish
8. Performance test
a. Grade A and Grade B spanners
b. Tommy bars
9. General dimensions
10. Tolerances
a. Tube wall
b. Formed ends of spanners
11. Tommy bars
Tables
1. Maximum dimensions across flats of hexagons
2. Dimensions for tubular box spanners for Unified
hexagon sizes (BS 1768 and BS 2708, Normal Series
and BS 1769, Heavy series)
2A. Dimensions of tubular box spanners for Unified
hexagon sizes (Normal Series) to BS 1768 and BS 2708
3. Dimensions of tubular box spanners for Unified
machine screw and machine screw nut hexagons
(BS 1981)
4. Dimensions of tubular box spanners for BS hexagons
(BS 916 and BS 1083) and Whitworth large hexagons
5. Dimensions of tubular box spanners for BS hexagons
(BS 57)
6. Dimensions of tubular box spanners for metric
hexagons
Steels for spanners and tommy bars; hardness figures, performance test. Two grades of spanner. Dimensions: unified precision hexagons, normal series, in BS 1768; Unified black hexagons, heavy series, in BS 1769; Unified machine screw hexagons in BS 1981; precision hexagons B.S.W. and B.S.F. in BS 1083; black hexagons in BS 916; B.A. hexagons in BS 57; Whitworth large hexagons (originally in BS 190, now obsolete); metric hexagons.
| Committee |
MTE/15
|
| DevelopmentNote |
Reviewed and confirmed by BSI, January 2011. (12/2010)
|
| DocumentType |
Standard
|
| Pages |
32
|
| PublisherName |
British Standards Institution
|
| Status |
Current
|
This British Standard relates to tubular box spanners suitable for the following hexagon standards or ranges:
BS 1768, Unified precision hexagon bolts, screws, nuts (UNC and UNF threads) and plain washers. Normal series.
BS 1769, Unified black hexagon bolts, screws, nuts (UNC and UNF) and plain washers. Heavy series.
BS 1981, Unified machine screws and machine screw nuts.
BS 1083, Precision hexagon bolts, screws, nuts (BSW and BSF threads) and plain washers.
BS 916, Black bolts and nuts. Hexagon and square, BSW and BSF.
BS 57, B.A. screws, bolts, nuts and plain washers.
Whitworth large hexagons (originally specified in BS 190, now obsolete).
Metric hexagons.
NOTE The spanners specified are also suitable for all the bolt sizes given in BS A1021) and for all the bolt head and most of the nut sizes used by the petroleum industry and specified in BS 17502).
The specification includes clauses for material, heat treatment, marking, tests and dimensional details together with requirements for the tommy bars by which the spanners are operated.
| Standards | Relationship |
| ISO 2236:1991 | Similar to |
| UNE-EN 15947-5:2023 | Identical |
| DEFSTAN 51-11(PT28)/2(1993) : 1993 | HAND TOOLS, GENERAL PURPOSE - PART 28: (A): MISCELLANEOUS ITEMS (B): HAND TOOLS FOR USE IN HAZARDOUS OR CRITICAL CONDITIONS |
| BS 2558:Supplement No. 1:1968 | Metric sizes |
| BS 1750(1961) : LATEST | BOLTING FOR THE PETROLEUM INDUSTRY |
| BS 2558:Supplement No. 1:1968 | Metric sizes |
| BS 916:1953 | Specification for black bolts, screws and nuts, hexagon and square, with B.S.W. threads, and partly machined bolts, screws and nuts, hexagon and square, with B.S.W. or B.S.F. threads |
| BS 57:1951 | Specification. B.A. screws bolts and nuts |
| BS 1769:1951 | Specification. Unified black hexagon bolts, screws, nuts (UNC & UNF threads). Heavy series |
| BS 2708(1956) : LATEST | UNIFIED BLACK SQUARE AND HEXAGON BOLTS, SCREWS AND NUTS (UNC AND UNF THREADS) - NORMAL SERIES |
| BS 1768:1951 | Bolts screws nuts (unc & unf threads) normal series |
| BS 970:1955 | Wrought steels (bars billets and forgings |
| BS 192:1954 | Open-ended spanners (not including B.A. sizes) |
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