AS/NZS 1111:1996

1 - AS/NZS 1111:1996 ISO METRIC HEXAGON COMMERCIAL BOLTS AND SCREWS
4 - PREFACE
5 - CONTENTS
6 - 1 SCOPE
6 - 2 REFERENCED DOCUMENTS
7 - 3 DEFINITIONS
7 - 3.1 Commercial bolts and screws
7 - 3.2 Concentricity tolerance
7 - 3.3 Grip length
7 - 3.4 Nominal length
7 - 3.5 Screw
7 - 3.6 Symmetry tolerance
7 - 3.7 Thread length
7 - 3.8 Thread runout
7 - 3.8.1 Bolts and screws with rolled threads
7 - 3.8.2 Bolts and screws with cut threads
7 - 3.9 Transition diameter
7 - 3.10 Unthreaded shank length
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 - 5.2 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 Thread length
8 - 5.5.1 Hexagon bolts
8 - 5.5.2 Hexagon screws
15 - 5.6 Squareness, concentricity and symmetry of hexagon bolts and screws
15 - 5.6.1 Squareness of bearing face
15 - 5.6.2 Concentricity of shank to screw thread
15 - 5.6.3 Symmetry of head to shank
16 - 5.7 Chamfering and washer facing of hexagon bolts and screws
16 - 5.8 Shank
16 - 5.8.1 Diameter
16 - 5.8.2 Straightness
16 - 5.9 Underhead fillet
16 - 5.9.1 Bolts
16 - 5.9.2 Screws
16 - 5.10 Finish
16 - 5.10.1 General
16 - 5.10.2 Surface roughness
16 - 5.10.3 Surface finish
16 - 5.10.4 Coatings
16 - 6 MATERIALS AND MECHANICAL PROPERTIES FOR STEEL BOLTS AND SCREWS
16 - 7 TEST METHODS FOR STEEL COMMERCIAL BOLTS AND SCREWS
17 - 8 MARKING
17 - 9 DESIGNATION
18 - APPENDIX A - BASIS FOR DERIVATION OF TOLERANCES
19 - APPENDIX B - SHANK AND HEAD DIMENSIONS FOR HEXAGON BOLTS AND SCREWS OVER M64 THREAD SIZE
20 - APPENDIX C - NON-PREFERRED SIZES
22 - APPENDIX D - A SUGGESTED AUDIT SAMPLING PLAN FOR MECHANICAL PROPERTIES

Specifies the dimensional and marking requirements for commercial hexagon bolts and screws with ISO metric coarse pitch series threads in diameters from 5 mm to 64 mm inclusive, and the material requirements for steel bolts and screws of property class 4.6.

This Standard specifies the dimensional and marking requirements for commercial hexagon bolts and screws with ISO metric coarse pitch series threads in diameters from 5 mm to 64 mm inclusive, and the material requirements for steel bolts and screws of property class 4.6.NOTES:1 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 for bolts and screws with thread sizes over 64 mm is provided in Appendix A and Appendix B, respectively.2 The recommended classes of nut suitable for assembly with ISO metric hexagon commercial bolts and screws are property class 5 for normal, slotted and castle nuts, and property class 04 for thin nuts. These classes are in accordance with AS 1112.3 Precision bolts or screws of property classes 4.6 and 5.8 in accordance with AS/NZS 1110 may be supplied in lieu of commercial products.4 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 in Australia as AS 1111-1972.
Second edition 1980.
Jointly revised and designated AS/NZS 1111:1996.