AS/NZS 1110:1995

1 - AS/NZS 1110:1995 ISO METRIC PRECISION HEXAGON BOLTS AND SCREWS
4 - PREFACE
5 - CONTENTS
6 - 1 SCOPE
6 - 2 REFERENCED DOCUMENTS
7 - 3 DEFINITIONS
7 - 3.1 Concentricity tolerance
7 - 3.2 Grip length
7 - 3.3 Unthreaded shank length
7 - 3.4 Nominal length
7 - 3.5 Precision bolts and screws
7 - 3.6 Screw
7 - 3.7 Symmetry tolerance
7 - 3.8 Thread length
7 - 3.9 Thread runout
7 - 3.9.1 Bolts and screws with rolled threads
7 - 3.9.2 Bolts and screws with cut threads
7 - 3.10 Transition diameter
7 - 3.11 Shall
7 - 3.12 Should
7 - 3.13 May
7 - 4 METHOD OF MANUFACTURE
7 - 5 SHAPE, DIMENSIONS AND FINISH
7 - 5.1 Hexagon heads
7 - 5.1.1 General
7 - 5.1.2 Chamfer
7 - 5.1.3 Washer face
7 - 5.2 Length of hexagon bolts and screws
8 - 5.3 Ends of hexagon bolts and screws
8 - 5.4 Screw threads
8 - 5.4.1 General
8 - 5.4.2 Tolerances
8 - 5.5 Length of thread
8 - 5.5.1 Hexagon bolts
8 - 5.5.2 Hexagon screws
8 - 5.6 Squareness, concentricity and symmetry of hexagon bolts and screws
8 - 5.6.1 Squareness of bearing face
8 - 5.6.2 Concentricity of shank to screw thread
9 - 5.6.3 Symmetry of head to shank
9 - 5.7 Shank
9 - 5.7.1 Diameter
9 - 5.7.2 Straightness
9 - 5.8 Underhead fillet (see Figure 2)
9 - 5.8.1 Bolts
9 - 5.8.2 Screws
9 - 5.9 Finish
9 - 5.9.1 General
9 - 5.9.2 Surface roughness
9 - 5.9.3 Surface finish
9 - 5.9.4 Coatings
9 - 6 MATERIALS AND MECHANICAL PROPERTIES FOR STEEL BOLTS AND SCREWS
9 - 7 TEST METHODS FOR STEEL BOLTS AND SCREWS
10 - 8 MARKING
10 - 9 DESIGNATION
18 - APPENDIX A - BASIS FOR DERIVATION OF TOLERANCES
19 - APPENDIX B - SHANK AND HEAD DIMENSIONS FOR HEXAGON BOLTS AND SCREWS WITH THREADS LARGER THAN M36
20 - APPENDIX C - RECOMMENDED COMBINATIONS OF STEEL BOLTS AND SCREWS WITH ASSOCIATED NUTS
20 - C1 RECOMMENDED COMBINATIONS OF NORMAL, SLOTTED AND CASTLE NUTS WITH BOLTS AND SCREWS
20 - C2 THIN NUTS
22 - APPENDIX D - NON-PREFERRED SIZES
24 - APPENDIX E - A SUGGESTED AUDIT SAMPLING PLAN FOR MECHANICAL PROPERTIES

Specifies the dimensional and marking requirements for precision hexagon bolts and screws with ISO metric coarse pitch series threads in diameters from 1.6 mm to 36 mm inclusive, and the material requirements for steel bolts and screws of property classes 4.6, 5.8, 8.8, 9.8, 10.9, [underscore]10.9 and 12.9.

This Standard specifies the dimensional and marking requirements for precision hexagon bolts and screws with ISO metric coarse pitch series threads in diameters from 1.6 mm to 36 mm inclusive, and the material requirements for steel bolts and screws of property classes 4.6, 5.8, 8.8, 9.8, 10.9, 10.9 and 12.9.NOTES:The range of nominal sizes included in this Standard is considered adequate for most of the applications for which this series is likely to be employed, but for the convenience of users requiring larger sizes, further information in relation to the derivation of tolerances and head dimensions is provided in Appendix A and Appendix B respectively. Nuts for use with bolts to this Standard are specified in AS 1112. For information on recommended property classes of nuts to be associated with each property class of precision hexagon bolts and screws, see Appendix C.Inclusion of the property class given in this Standard does not necessarily imply that such types are stock items. The purchaser should refer to the manufacturer's listings for stock availability.If bolts with other than coarse pitch series threads are required, these are subject to agreement between the manufacturer and the purchaser, and the thread series should be selected from AS 1721.The purchaser, when ordering, or enquiring about, bolts or screws complying with this Standard should provide the supplier with all relevant details. The complete designation required is given in Clause 9.

First published as AS 1110-1972.
Second edition 1980.
Third edition 1984.
Revised and designated as AS/NZS 1110:1995.