BS 2470:1973
Withdrawn
A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.
Specification for hexagon socket screws and wrench keys. Inch series
Hardcopy , PDF
26-02-2021
English
15-06-1973
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Cooperating organizations
Foreword
Specification
1. General
1.1 Scope
2. Hexagon socket screws
2.1 Material
2.2 Finish
2.3 Dimensions
2.4 Head diameter
2.5 Length of socket screws
2.6 Tolerance on length
2.7 Ends of socket screws
2.8 Screw threads
2.9 Radius under head
2.10 Length of thread
2.11 Concentricity and straightness
2.12 Dimensions of hexagon sockets
3. Hexagon wrench keys and bits
3.1 Material
3.2 Finish
3.3 Dimensions
3.4 Ends of keys
3.5 Torque test
3.6 Application
Appendices
A. Mechanical properties of finished alloy steel
hexagon socket screws and wrench keys
B. Dimensioning of countersunk head screws
C. Terminal length increments for socket screws
Tables
1. Option 1 for thread length and grip lengths of cap
screws having UNC, UNF, BSW, BSF and BA threads
2A. Dimensions of hexagon socket head cap screws, ISO
inch (Unified) threads
2B. Dimensions of hexagon socket head cap screws, BSW
and BSF threads
2C. Dimensions of hexagon socket head cap screws, BA
threads
3. Dimensions of hexagon socket countersunk head screws
with ISO inch (Unified) threads
4. Dimensions of hexagon socket button head screws
with ISO inch (Unified) threads
5. Hexagon socket head shoulder screws (stripper bolts)
with ISO inch (Unified) and BSW/BSF threads
6A. Dimensions of hexagon socket set screws with ISO
inch (Unified) threads
6B. Dimensions of hexagon socket screws with BSW and BSF
threads
6C. Dimensions of hexagon socket set screws with BA
threads
6D. Dimensions of hexagon socket set screws with G(BSPF)
threads
7. Dimensions of hexagon sockets
8. Dimensions of hexagon wrench keys
9. Applicability of hexagon wrench keys to various
socket screw types and sizes
Figures
1. Alternative types of cup point and socket permissible
with hexagon socket set screws with ISO inch
(Unified), BA, BSW and BSF and G(BSPF) threads
Specifies dimensions, tolerances and general requirements for cap screws, countersunk-head screws, button-head screws and shoulder screws (stripper bolts) and set screws, also their mechanical properties and nominal length increments. Dimensions and requirements for wrench keys are also given.
| Committee |
FME/9
|
| DevelopmentNote |
Supersedes 68/23846 DC. (06/2005) Reviewed and confirmed by BSI, January 2012. (12/2011)
|
| DocumentType |
Standard
|
| Pages |
36
|
| PublisherName |
British Standards Institution
|
| Status |
Withdrawn
|
| Supersedes |
| Standards | Relationship |
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