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
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
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