BS 3692:2001

Committees responsible
Foreword
1 Scope
2 Normative references
3 Finishes
4 General dimensions
5 Length of bolts and screws
6 Ends of bolts and screws
7 Screw threads
8 Length of thread on bolts and screws
9 Angularity and eccentricity of bolts, screws and nuts
10 Chamfering, washer facing and countersinking
11 Strength grade designation system for steel bolts and screws
12 Material and manufacture of steel bolts and screws
13 Mechanical properties of steel bolts and screws
14 Strength grade designation system for steel nuts
15 Material and manufacture of steel nuts
16 Mechanical properties of steel nuts (excluding thin nuts)
17 Drilled bolts with split pin holes
18 Marking and identification
19 Inspection and testing
20 Complete designation for the purpose of an enquiry or order
Annex A (normative) Recommended gauge for checking
        squareness of thread to face of nut
Annex B (normative) Chemical composition of steel nuts
Annex C (normative) testing of mechanical properties of
        steel nuts
Annex D (informative) Association of bolt and screw lengths
        and diameters
Annex E (informative) Basis for the derivation of tolerances
Annex F (informative) Manufacturer's recommended range of
        sizes
Bibliography
Figure 1 to 12
Figure A.1 to E.17
Table 1 to 10
Table B.1 to F.2

Gives the general dimensions and tolerances of precision hexagon bolts, screws and nuts with ISO metric threads in diameters from 1.6 mm to 68 mm inclusive.