Note: it is a requirment of ASTM AM & ASTM FM standard theat the bolt nut & washer should be assembled and supplied by one manufacturer who shall . ASTM Standards: A Specification for Zinc Coating (Hot-Dip) on Iron and. Steel Hardware2. A M Specification for High-Strength Bolts for Struc-. ASTM AM 碳合金钢螺母 – ASTM American Society for Testing and Materials(美国材料与试验协会)成立于年,是美国最老.
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Please help us to share our service with your friends. A number in parentheses indicates the year asfm last reapproval. The atmospheric corrosion resistance of these steels is substantially better than that of carbon steel with or without copper addition see 5. When properly exposed to the atmosphere, these steels can be used a563j uncoated for many applications. NOTE 2—A complete metric companion to Specification A has been developed—AM; therefore, no metric equivalents are presented in this specification.
Current edition approved April 1, Originally approved in Last previous edition approved in as A — 07a. NOTE 3—An example of an ordering description follows: Materials and Manufacture 4. When this heat treatment is used, there shall be particular attention to the requirements in 6. See Guide G for methods of estimating the atmospheric corrosion resistance of low alloy steels. DC heat product 0. B Acid bessemer steel only.
Heat analysis Product analysis Manganese: Heat analysis Product analysis Phosphorus: Heat analysis Product analysis Sulfur: Heat analysis Product analysis Silicon: Heat analysis Product analysis Copper: Heat analysis Product analysis Nickel: Heat analysis Product analysis Chromium: Heat analysis Product analysis Vanadium: Heat analysis Product analysis Molybdenum: Heat analysis Asym analysis Titanium: C3 nuts may be made of any of the above listed material classes.
Selection of the class shall be at the option of the manufacturer. Nickel or molybdenum may be used. When required, they are covered asgm the applicable bolt specification.
Plain Uncoated Nuts 7. The major and minor diameters shall also be increased by the allowance to provide the corresponding minimum and maximum major and minor diameters. Nuts With Other Coatings 7. B Non-zinc-coated nuts are nuts intended for use with externally threaded fasteners which have a plain nonplated or noncoated finish or have a plating or coating of insufficient thickness to necessitate overtapping the nut thread to provide assemblability.
ASTM AM 碳合金钢螺母_百度文库
Zinc-coated nuts are nuts intended for use with externally threaded fasteners which are hot-dip zinc-coated, mechanically zinc-coated, or awtm a plating or coating of sufficient thickness to necessitate overtapping the nut thread to provide assemblability. When A zinc-coated inch series nuts are supplied, the zinc coating, overtapping, lubrication and rotational 5a63m testing shall be in accordance with Specification A Specification F, or otherwise hot-dip coated, shall be tapped oversize by a diametral amount sufficient to permit assembly on the coated bolt thread, unless other requirements are specified in the inquiry or purchase order.
Number of Tests 9.
Additional tests of individual shipments of material are not ordinarily contemplated. Individual heats of steel are not identified in the finished product.
Nominal Nut Size, in. A min max 0. Number of Nuts in Lot Number of Specimens and under to 8 8 to 22 Over 22 1 2 3 5 9. The manufacturer shall afford the inspector all reasonable facilities to satisfy him that the material asmt being furnished in accordance with this specification. Rejection and Rehearing Rejection should be reported to the producer or supplier a563j and in writing.
In case of dissatisfaction with the results of the test, the producer or supplier may make claim for a rehearing. When individual marking is required, the mark shall a653m the grade letter symbol on one face of the nut. In addition, the manufacturer may add other distinguishing marks indicating that the nut is atmospheric corrosion resistant and of a weathering type.
However, if markings are located on the bearing surface, they shall be depressed. The two identifications shall preferably be in different locations and, when on the same level, shall be separated by at least two spaces. Packaging and Package Marking Hex nuts made to the requirements of DH3 shall be marked with the symbol HX3 on one ast. Supplementary Lubricant Requirements for Nuts S3.
The lubricant shall be applied to specified surfaces on the nuts, such as 1 principally only those portions which are threaded, or 2 on threaded portions and either only astj bearing atm or both bearing faces, as required, or 3 such other specific lubricant placement criteria as are agreed to between the purchaser and the user. Details of these supplementary requirements shall be agreed upon in writing between the manufacturer and purchaser. This supplementary requirement shall in no way negate any requirement of the specification itself.
ASTM AM – 07() Standard Specification for Carbon and Alloy Steel Nuts (Metric)
A, B, D, DH For smaller quantities A Gr. Others are not suitable. E Non-zinc-coated nuts are nuts intended for use with externally threaded fasteners, which have a plain nonplated or noncoated finish or a have a plating aztm coating of insufficient thickness to necessitate overtapping the nut thread to provide assembiability.
Zinc-coated nuts are nuts intended for use with externally threaded fasteners which are not hot-dip zinc-coated, mechanically zinc-coated, or have a plating or coating of sufficient thickness to necessitate overtapping the nut thread to provide assembiability. Such nuts are suitable. Committee F16 has identified the location of selected changes to this standard since the last issue A—07 that may impact the use of this standard. Committee F16 has identified the location of selected changes made to this standard since the last issue, A—04a, that may impact the use of this standard.
C, to Specification F Users of astn standard are expressly advised that determination of the validity of any such patent rights, and the risk of infringement of such rights, are entirely their own responsibility. This standard is subject to revision at any time by the responsible a563 committee and must be reviewed every five years and if not revised, either reapproved or withdrawn. Your comments are invited either for revision of this standard or for additional standards aetm should be addressed to ASTM International Headquarters.
Your comments will receive careful consideration at a meeting of the responsible technical committee, which you may attend. If you feel that your comments have not received astmm fair hearing you should make your views known to the ASTM Committee on Standards, at the address shown below.
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