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BS 7794:1995

BS 7794:1995

Current

Current

The latest, up-to-date edition.

Specification for square-drive sockets, driving squares and accessories for power-driven socket wrenches

Available format(s)

Hardcopy , PDF

Language(s)

English

Published date

11-15-1995

Publisher

British Standards Institution

Committees responsible
Foreword
SPECIFICATION
1 Scope
2 References
3 Definitions
4 Materials
5 Hardness
6 Design and manufacture
7 Finish
8 Dimensions and tolerances
9 Designation and marking
Annexes
A (normative) Power-driven square-drive sockets and
   accessories for the Unified inch series of bolts, nuts
   and machine screws
B (normative) Power-driven square-drive sockets and
   accessories for BSW, BSF and BA bolts, nuts and
   machine screws (obsolescent)
C (informative) Notes on safe usage of power-driven
   sockets and accessories
D (informative) Retaining devices
Tables
1 Male driving squares
2 Female driving squares
3 Hexagon sockets with 6.3 mm square drive
4 Hexagon sockets with 10 mm square drive
5 Hexagon sockets with 12.5 mm square drive
6 Hexagon sockets with 20 mm square drive
7 Hexagon sockets with 25 mm square drive
8 Hexagon sockets with 40 mm square drive
9 Power-square drive converters
10 Power square-drive extensions
11 Power square-drive universal joints
A.1 Hexagon sockets with a quarter inch (6.3 mm) square
     drive: Unified (inch) hexagons
A.2 Hexagon sockets with three eighths of an inch (10 mm)
     square drive: Unified (inch) hexagons
A.3 Hexagon sockets with a half inch (12.5 mm) square
     drive: Unified (inch) hexagons
A.4 Hexagon sockets with three quarters of an inch
     (20 mm) square drive: Unified (inch) hexagons
A.5 Hexagon sockets with 1 in (25 mm) square drive:
     Unified (inch) hexagons
A.6 Hexagon sockets with one and a half inch (40 mm)
     square drive: Unified (inch) hexagons
B.1 Hexagon sockets with a quarter of an inch (6.3 mm)
     square drive: BSF, BSW and large Whitworth hexagons
B.2 Hexagon sockets with a quarter of an inch (6.3 mm)
     square drive: BA hexagons
B.3 Hexagon sockets with three eighths of an inch (10mm)
     square drive: BSF, BSW and large Whitworth hexagons
B.4 hexagon sockets with half an inch (12.5 mm) square
     drive: BSF, BSW and large Whitworth hexagons
B.5 Hexagon sockets with three quarters of an inch
     (20 mm) square drive: BSF, BSW and large Whitworth
     hexagons
B.6 Hexagon sockets with 1 inch (25 mm) square drive:
     BSF, BSW and large Whitworth hexagons
Figures
1 Male driving squares
2 Female driving squares
3 Hexagon sockets with 6.3 mm square drive
4 Hexagon sockets with 10 mm square drive
5 Hexagon sockets with 12.5 mm square drive
6 Hexagon sockets with 20 mm square drive
7 Hexagon sockets with 25 mm square drive
8 Hexagon sockets with 40 mm square drive
9 Power square-drive converters
10 Power square-drive extensions
11 Power square-drive universal joints
A.1 Hexagon sockets with a quarter of an inch (6.3 mm)
     square drive: Unified (inch) hexagons
A.2 Hexagon sockets with three eighths of an inch
     (10 mm) square drive: Unified (inch) hexagons
A.3 Hexagon sockets with half an inch (12.5 mm) square
     drive: Unified (inch) hexagons
A.4 Hexagon sockets with a three quarters of an inch
     (20 mm) square drive: Unified (inch) hexagons
A.5 Hexagon sockets with 1 in (25 mm) square drive:
     Unified (inch) hexagons
A.6 Hexagon sockets with one and a half inch (40 mm)
     square drive: Unified (inch) hexagons
B.1 Hexagon sockets with a quarter of an inch (6.3 mm)
     square drive: BSF, BSW and large Whitworth hexagons
B.2 Hexagon sockets with a quarter of an inch (6.3 mm)
     square drive: BA hexagons
B.3 Hexagon sockets with three eigths of an inch
     (10 mm) square drive: BSF, BSW and large Whitworth
     hexagons
B.4 Hexagon sockets with a half inch (12.5 mm) square
     drive: BSF, BSW and large Whitworth hexagons
B.5 Hexagon sockets with a three quarters of an inch
     (20 mm) square drive: BSF, BSW and large Whitworth
     hexagons
B.6 Hexagon sockets with 1 in (25 mm) square drive:BSF,
     BSW and large Whitworth hexagons
D.1 Retaining devices
List of references

Specifies design and dimensional requirements for some components of power-driven socket wrenches.

This British Standard specifies design and dimensional requirements for the following components of power-driven socket wrenches: square-drive sockets for metric bolts, nuts and machine screws specified in: BS 3692 : 1967, BS 4183 : 1967, BS 4190 : 1967, BS 4395 : Parts 1 and 2 : 1969, BS 4929 : 1973; driving squares; accessories: square-drive converters, extensions and universal joints. The dimensional requirements for comparable sockets for the inch series of bolts, nuts and machine screws are specified in annexes A and B. Annex C gives notes on the safe usage of power-driven sockets and accessories, and annex D describes two types of retaining device.

Committee
MTE/15
DevelopmentNote
Supersedes 93/706844 DC (10/2005) Reviewed and confirmed by BSI, January 2011. (12/2010)
DocumentType
Standard
Pages
36
PublisherName
British Standards Institution
Status
Current
Supersedes

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 4395-1:1969 Specification for high strength friction grip bolts and associated nuts and washers for structural engineering General grade
BS 1083:1965 Specification for precision hexagon bolts, screws and nuts (B.S.W. & B.S.F. threads)
BS 1769:1951 Specification. Unified black hexagon bolts, screws, nuts (UNC & UNF threads). Heavy series
BS 4929-1:1973 Specification for steel hexagon prevailing-torque type nuts Metric series
BS 4190:1967 Specification for ISO metric black hexagon bolts, screws and nuts
BS 4183:1967 Specification for machine screws and machine screw nuts. Metric series
BS 4395-2:1969 Specification for high strength friction grip bolts and associated nuts and washers for structural engineering Higher grade bolts and nuts and general grade washers
BS 571(1953) : LATEST FLASKS FOR THE DETERMINATION OF DISTILLATION RANGE

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PDF - English
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