BS 2A 230:1974
Current
The latest, up-to-date edition.
Specification for 100° countersunk head steel bolts [1100 MPa with Hi-torque speed drive recesses]
Hardcopy , PDF
English
24-06-1974
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Foreword
Specification
1 Scope
2 General requirements
3 Material and manufacture
4 Dimensions
5 Screw threads
6 Anti-corrosion treatment
7 Identification and marking
8 Gauging
Appendices
A Principles of flushness control and recommended
gauging practice
B Recess penetration gauge
C Driver tips
D Oversize bolts
E Table for the conversion of inches to millimetre
equivalents
Tables
1 Thread, head and recess dimensions
2 Bearing length L and overall length E
3 Dimensions of gauge block
4 Dimensions of sleeve and gauge pin
5 Dimensions of gauge points
6 Driver tip envelope dimensions
Figures
1 Bolt dimensions
2 Diagram showing maximum and minimum head conditions
3 Bolt dimensions
4 Method of measuring head protrusion
5 Protrusion gauge block
6 Recess penetration gauge
7 Gauge points
8 Driver tip envelope
Gives materials, dimensions finish and inspection requirements for cadmium plated steel bolts with countersunk heads and unified threads for aircraft use. Includes identification and marking, gauging, principles of flushness control and recommended gauging practice, recess penetration gauge, driver tips, oversize bolts and table for the conversion of inches to millimetre equivalents. Illustrates bolt dimensions, diagram showing maximum and minimum lead conditions, method of measuring head protrusion, protrusion gauge block, recess penetration gauge, gauge points and driver tip envelope.
| Committee |
ACE/12
|
| DevelopmentNote |
Supersedes 72/36929 DC (07/2005) Reviewed and confirmed by BSI, November 2012. (10/2012)
|
| DocumentType |
Standard
|
| Pages |
24
|
| PublisherName |
British Standards Institution
|
| Status |
Current
|
This British Standard specifies the materials, dimensions finish and inspection requirements for cadmium plated steel bolts with countersunk heads and Unified threads for aircraft use.
| BS A 232:1968 | Specification for 100° countersunk head steel bolts (160 000 lbf/in<sup>2</sup> (110 hbar) with Torq-set recesses) |
| BS A 232:1968 | Specification for 100° countersunk head steel bolts (160 000 lbf/in<sup>2</sup> (110 hbar) with Torq-set recesses) |
| BS 2S 149:1976 | Specification for 1.75% nickel-chromium-molybdenum steel bars for the manufacture of forged bolts and forged nuts |
| BS 2A 100:1968 | Specification for general requirements for bolts and nuts of tensile strength not exceeding 180000 lbf/in<sup>2</sup> (125 hbar) |
| BS 4084:1966 | Unified screw threads of \'unj\' basic profile |
| BS 350:2004 | Conversion factors for units |
| BS 2A173(1962) : 1962 | SPECIFICATION FOR 100 DEGREES COUNTERSUNK HEAD STEEL BOLTS (UNIFIED THREADS), CADMIUM PLATED, FOR AIRCRAFT |
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