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1、AS/NZS 1427/Amdt 1/1997-06-05 STANDARDS AUSTRALIA/STANDARDS NEW ZEALAND Amendment No. 1 to AS/NZS 1427:1996 ISO metric machine screws CORRECTION The 1996 edition of AS/NZS 1427 is amended as follows; the amendments should be inserted in the appropriate place. SUMMARY: This Amendment applies to Figur
2、es 2 and 3. Published on 5 June 1997. AMDT No. JUNE 1997 Page 8Figure 2 Delete existing Figure 2 and insert the following: ISBN 0 7337 1100 6 AMDT No. 1 JUNE 1997 millimetres Thread Nom. pitch GeneralSlotted heads Cross-recess heads Type Z (Pozidriv)Type H (Phillips) Head dia.Head height Fillet radi
3、us Thread runout Height of raised portion Head radius Slot widthSlot depthPenetration Recess dia. Driver point No. Penetration Recess dia. Drive point No. (p)(k)(r)(a)(f)(r1)(n)(t)(m)(m) Max.Min.Max.Min.(max.)(max.)(nom.)(nom.)Max.Min.Max.Min.Max.Min.(nom.)Max.Min.(nom.) M1.6 M2 M2.5 0.35 0.4 0.45 3
4、.0 3.8 4.7 2.7 3.5 4.4 1.0 1.20 1.50 0.80 1.02 1.30 0.4 0.5 0.6 0.7 0.8 0.9 0.4 0.5 0.6 3.0 4.0 5.0 0.60 0.70 0.80 0.46 0.56 0.66 0.80 1.00 1.2 0.64 0.80 1.00 1.4 1.75 1.15 1.5 2.2 2.8 0 1 1.5 1.85 1.2 1.5 2.0 3.0 0 1 M3 (M3.5) M4 0.5 0.6 0.7 5.5 7.3 8.4 5.2 6.94 8.04 1.65 2.35 2.7 1.43 1.69 1.94 0.
5、8 0.9 1.0 1.0 1.2 1.4 0.7 0.8 1.0 6.0 8.5 9.5 1.00 1.20 1.51 0.86 1.06 1.26 1.45 1.70 1.90 1.20 1.40 1.60 2.08 2.7 3.1 1.83 2.25 2.65 3.1 4.6 5.0 1 2 2 2.2 2.75 3.2 1.8 2.25 2.7 3.4 4.8 5.2 1 2 2 M5 M6 M8 0.8 1.0 1.25 9.3 11.3 15.8 8.94 10.87 15.37 2.7 3.3 4.65 2.20 2.66 3.58 1.3 1.5 2.0 1.6 2.0 2.5
6、 1.2 1.4 2.0 9.5 12.0 16.5 1.51 1.91 2.31 1.26 1.66 2.06 2.40 2.80 3.70 2.00 2.40 3.20 3.35 3.85 5.2 2.9 3.4 4.75 5.3 7.1 9.5 2 3 4 3.4 4.0 5.25 2.9 3.5 4.75 5.4 7.3 9.6 2 3 4 M101.518.317.785.004.502.53.02.319.52.812.564.403.86.055.610.346.05.510.44 * See ISO 7721. Size in parentheses is non-prefer
7、red. FIGURE 2DIMENSIONS OF RAISED COUNTERSUNK HEAD SCREWS AMDT No. 1 JUNE 1997 millimetres Thread* Nom. pitch GeneralSlotted heads Cross-recess heads Head radius Type Z (Pozidriv)Type H (Phillips) Head dia. Fillet radius Thread runout Head height Head radius Slot width Bottom of slot to bearing face
8、 Slot depth Head height Penetration Recess dia. Driver point No. Penetration Recess dia. Driver point No. (p)(r)(a)(k)(rf)(n)(w)(t)(k)(rf)(m)(m) Max.Min.Max.Min.(max.)Max.Min.(nom.)Max.Min.(min.)min.Max.Min.(nom.)Max.Min.(nom.)Max.Min.(nom.) M1.6 M2 M2.5 0.35 0.4 0.45 3.2 4.0 5.0 2.9 3.7 4.7 0.3 0.3
9、 0.3 0.1 0.1 0.1 0.7 0.8 0.9 1.0 1.30 1.5 0.86 1.16 1.36 0.5 0.6 0.8 0.60 0.70 0.80 0.40 0.50 0.66 0.3 0.9 0.5 0.35 0.5 0.6 1.30 1.60 2.1 1.16 1.46 1.96 2.5 3.2 4.0 0.90 1.42 1.5 0.65 1.17 1.25 1.6 2.1 2.6 0 0 1 0.95 1.20 1.55 0.7 0.9 1.15 1.7 1.9 2.7 0 0 1 M3 (M3.5) M4 0.5 0.6 0.7 5.6 7.0 8.0 5.3 6
10、.64 7.64 0.3 0.3 0.35 0.1 0.1 0.2 1.0 1.2 1.4 1.8 2.1 2.4 1.66 1.96 2.26 0.9 1.0 1.2 1.00 1.20 1.51 0.86 1.06 1.26 0.7 0.8 1.0 0.7 0.8 1.0 2.4 2.6 3.1 2.26 2.46 2.92 5.0 6.0 6.5 1.75 1.93 2.34 1.5 1.48 1.89 2.9 3.9 4.3 1 2 2 1.8 1.9 2.4 1.4 1.4 1.9 3.0 3.9 4.4 1 2 2 M5 M6 M8 0.8 1.0 1.25 9.5 12.0 16
11、.0 9.14 11.57 15.57 0.35 0.4 0.6 0.2 0.25 0.4 1.6 2.0 2.5 3.0 3.6 4.8 2.86 3.3 4.5 1.5 1.8 2.4 1.51 1.91 2.31 1.26 1.66 2.06 1.2 1.4 1.9 1.2 1.4 1.9 3.7 4.6 6.0 3.52 4.30 5.70 8.0 9.10 13.0 2.74 3.46 4.5 2.29 3.03 4.05 4.7 6.7 8.8 2 3 4 2.9 3.6 4.6 2.4 3.1 4.0 4.9 6.9 9.0 2 3 4 M101.520.019.480.60.4
12、3.06.05.73.02.812.562.42.47.57.1416.05.695.249.945.85.210.14 * Size in parentheses is non-preferred. FIGURE 3DIMENSIONS OF PAN HEAD SCREWS Thi s page has been l ef t i nt ent i onal l y bl ank. AS/NZS 1427:1996 Australian/New Zealand Standard ISO metric machine screws AS/NZS 1427:1996 This Joint Aus
13、tralian/New Zealand Standard was prepared by Joint Technical Committee ME/29, Fasteners. It was approvedon behalfof the Council of Standards Australia on 4 March 1996 and on behalf of the Council of Standards New Zealand on 18 March 1996. It was published on 5 September 1996. The following interests
14、 are represented on Committee ME/29: Australian Chamber of Commerce and Industry Bureau of Steel Manufacturers of Australia Electricity Supply Association of Australia Fasteners Institute of Australia Federal Chamber of Automotive Industries Metal Building Products Manufacturers Association Metal Tr
15、ades Industry Association of Australia New Zealand Joinery Manufacturers Federation New Zealand Manufacturers Federation Transpower New Zealand Review of Standards. To keep abreast of progress in industry, Joint Australian/ New Zealand Standards are subject to periodic review and are kept up to date
16、 by the issue of amendments or new editions as necessary. It is important therefore that Standards users ensure that they are in possession of the latest edition, and any amendments thereto. Full details of all Joint Standards and related publications will be found in the Standards Australia and Sta
17、ndards New Zealand Catalogue of Publications; this information is supplemented each month by the magazines The Australian Standard and Standards New Zealand, which subscribing members receive, and which give details of new publications, new editions and amendments, and of withdrawn Standards. Sugges
18、tions for improvements to Joint Standards, addressed to the head office of either Standards Australia or Standards New Zealand, are welcomed. Notification of any inaccuracy or ambiguity found in a Joint Australian/New Zealand Standard should be made without delay in order that the matter may be inve
19、stigated and appropriate action taken. This Standard was issued in draft form for comment as DR 95218. AS/NZS 1427:1996 Australian/New Zealand Standard ISO metric machine screws PUBLISHED JOINTLY BY: STANDARDS AUSTRALIA 1 The Crescent, Homebush NSW 2140 Australia STANDARDS NEW ZEALAND Level 10, Stan
20、dards House, 155 The Terrace, Wellington 6001 New Zealand ISBN 0 7337 0472 7 AS /NZS 1427:19962 PREFACE This Standard was prepared by the Joint Standards Australia/Standards New Zealand Committee ME/29 on Fasteners to supersede AS 14271974, ISO metric machine screws and in part, NZS/BS 4183:1967, Sp
21、ecification for machine screws and machine screw nuts. Metric series. Major technical changes incorporated in this edition relate to the mechanical properties and testing requirements in order to align with relevant ISO requirements. Other changes include the following: (a)Updating the list of refer
22、ence documents. (b)Deletion of material requirements for brass and aluminium alloy machine screws. (c)Revision of the identification marking requirements. (d)Revision of dimensions to align with ISO requirements. (e)Editorial changes in accordance with current policy. All head types and proportions
23、given in this Standard are in accordance with International Standards, with the exception of mushroom and hexagon washer heads, for which no internationalrecommendationsor draft recommendationsexist. These types of head configuration are widely used in Australian industries in light metal fabricatio
24、n, and were previously covered in specifications for imperial machine screws. For indented hexagon heads, the across flats dimensions are those for the normal size hexagon as given in AS/NZS 1110 and AS/NZS 1111. However, because of the mode of production, the head heights have been increased to com
25、pensate for the lack of fill on the corners. The hexagon washer heads are based on the next smaller sized hexagon rather than the normal series specified in AS/NZS 1110 and AS/NZS 1111. This also, is to accommodate the method of production and is in line with current manufacturing methods. The head
26、heights have similarly been increased to overcome the problem of fill on the hexagon corners. This Standard is based on the following International Standards: ISO 1207:1992Slotted cheese head screwsProduct grade A ISO 1580:1994Slotted pan head screwsProduct grade A ISO 2009:1994Slotted countersunk f
27、lat head screws (common head style)Product grade A ISO 2010:1994Countersunkslottedraisedheadscrews(commonhead style)Product grade A ISO 7045:1994Pan head screws with type H or type Z cross recess Product grade A ISO 7046.1:1994Countersunk flat head screws (common head style) with type H or type Z cr
28、oss recess Product grade A, Part 1: Steel of property class 4.8 ISO 7047:1994Countersunk raised head screws (common head style) with type H or type Z cross recessProduct grade A The term informative has been used in this Standard to define the application of the appendix to which it applies. An info
29、rmative appendix is only for information and guidance. 3AS /NZS 1427:1996 CONTENTS Page 1SCOPE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4 2REFERENCED DOCUMENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4 3DEFINI
30、TIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5 4METHOD OF MANUFACTURE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5 5SHAPE, DIMENSIONS AND FINISH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5 6MATERIALS AND M
31、ECHANICAL PROPERTIES FOR STEEL MACHINE SCREWS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16 7TEST METHODS FOR STEEL MACHINE SCREWS . . . . . . . . . . . . . . . . . . .16 8MARKING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
32、. . . 17 9DESIGNATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 APPENDICES APILOT POINT ENDS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 BA SUGGESTED AUDIT SAMPLING PLAN FOR MECHANICAL PROPERTIES . . . . . .
33、. . . . . . . . . . . . . . . . . . . . . . . . . . . .25 Originated in Australia as AS 1427 1974. Originated in New Zealand as part of NZS/BS 4183:1967. Jointly revised, amalgamated and designated AS/NZS 1427:1996. Incorporating: Amdt 11997 CopyrightSTANDARDS AUSTRALIA/STANDARDS NEW ZEALAND Users o
34、f Standards are reminded that copyright subsists in all Standards Australia and Standards New Zealand publications and software. Exceptwhere theCopyrightActallowsandexceptwhereprovidedforbelow nopublicationsorsoftwareproducedby Standards Australia or Standards New Zealand may be reproduced, stored i
35、n a retrieval system in any form or transmitted by any means without prior permission in writing from Standards Australia or Standards New Zealand. Permission may be conditional on an appropriate royalty payment. Australian requests for permission and information on commercial software royalties sho
36、uld be directed to the head office of Standards Australia. New Zealand requests should be directed to Standards New Zealand. Up to 10 percent of the technical content pages of a Standard may be copied for use exclusively in-house by purchasers of the Standard without payment of a royalty or advice t
37、o Standards Australia or Standards New Zealand. Inclusion of copyright material in computer software programs is also permitted without royalty payment provided such programs are used exclusively in-house by the creators of the programs. Care should be taken to ensure that material used is from the
38、current edition of the Standard and that it is updated whenever the Standard is amended or revised. The number and date of the Standard should therefore be clearly identified. The use of material in print form or in computer software programs to be used commercially, with or without payment, or in c
39、ommercial contracts is subject to the payment of a royalty. This policy may be varied by Standards Australia or Standards New Zealand at any time. AS /NZS 1427:19964 STANDARDS AUSTRALIA/STANDARDS NEW ZEALAND Australian/New Zealand Standard ISO metric machine screws 1SCOPEThis Standardspecifies thedi
40、mensionaland marking requirementsfor machine screws with ISO metric coarse pitch series threads with head styles and threads as given in Table 1, and the material requirements for steel machine screws of property class 4.8. TABLE1 METRIC MACHINE SCREWS Head styleDriveThread range Figure No. Counters
41、unkSlot Cross- recess M1.6 to M20 M2to M10 1 Raised countersunk Slot Cross- recess M1.6 to M10 M2to M10 2 PanSlot Cross- recess M1.6 to M10 M1.6 to M10 3 CheeseSlotM2.5 to M104 MushroomSlotM3to M85 HexagonHexagonM3to M106 Hexagon washerHexagonM3to M107 2REFERENCED DOCUMENTSThe following documents ar
42、e referred to in this Standard: AS 1275Metric screw threads for fasteners 1654ISO system of limits and fits 1654.2Tables of standard tolerance grades and limit deviations for holes and shafts 1897Electroplated coatings on threaded components (metric coarse series) AS/NZS 4291Mechanical properties of
43、 fasteners 4291.1Part 1: Bolts, screws and studs HB18Guidelines for third-party certification and accreditation HB18.22Guide 22: Informationonmanufacturersdeclarationofconformitywith standards or other technical specifications. COPYRIGHT 5AS /NZS 1427:1996 ISO 4757Cross recesses for screws 6157Faste
44、nersSurface discontinuities 6157.1Part 1: Bolts, screws and studs for general requirements 7721Countersunk head screwsHead configuration and gauging NZS ISO 286ISO system of limits and fits ISO 286.2 Part 2:Tables of standard tolerance grades and limit deviations for holes and shafts 3DEFINITIONSFor
45、 the purpose of this Standard, the definitions below apply. 3.1Concentricity tolerancethe allowable deviation of the head with respect to the screw thread. 3.2Mayindicates existence of an option. 3.3Nominal length (l)the distance from the appropriate position on the head as follows, to the extreme e
46、nd of the screw: (a)For countersunk head screws . . . . . . .from the upper surface of the head. (b)For raised countersunk head screws. .fromtheuppersurfaceofthehead excluding the raised portion. (c)For screws with other heads . . . . . . . .from the underside of the head. 3.4Symmetry tolerancethe a
47、llowable deviation of the location of the driving feature with respect to the screw thread. 3.5Transition diameterthe diameter of a circle found at the transition between the fillet radius and the bearing surface of the head other than a countersunk or raised countersunk head. 3.6Shallindicates that
48、 a statement is mandatory. 3.7Shouldindicates a recommendation. 4METHOD OF MANUFACTUREMachine screws shall be (a)hot or cold forged with or without secondary machining; or (b)machined from bar stock. 5SHAPE, DIMENSIONS AND FINISH 5.1Heads of screws 5.1.1GeneralThe geometry and dimensions of machine
49、screw heads shall be as shown in Figures 1 to 7 and ISO 7721 as appropriate. Where the screws are to be hot-dip galvanized, the dimensions shown in Figures 1 to 7 shall apply before galvanizing. 5.1.2Hexagon headsThe across flats dimension of hexagon heads shall be measured at the point of maximum material, and the taper of the sides of the hexagon (the angle between one side and the axis) shall be not greater than two degrees. All edges and corners of the hexagon surfaces may be slightly rounded. For heads formed with an integral washer,