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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For the convenience of the user, Committee F16 has highlighted those changes that impact the use of this standard. NOTE 4—Purchasers are cautioned that different classes of nuts have different nut thickness see 7.
The atmospheric corrosion resistance of these steels is substantially better than that of carbon steel with or without copper addition see 6. See Guide G for methods of estimating corrosion resistance of low alloy steels.
Rejection should be reported to the producer or supplier promptly and in writing. Committee F16 has identified the location of selected changes to this standard since the last issue A—07 that may impact the astn of this satm.
Additional tests of individual shipments of material are not ordinarily contemplated. No other units of measurement are included in this standard.
ASTM AM – 07() Standard Specification for Carbon and Alloy Steel Nuts (Metric)
Nuts With Other Coatings 7. Hex jam nuts are not normally proof load tested. NOTE 2—A complete metric companion to Specification A has been developed—AM; therefore, no metric equivalents are presented in this specification.
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 or coating of insufficient thickness to necessitate overtapping the asym thread to provide assembiability. When this heat treatment is used, there shall be particular attention to the requirements in 6.
Heat analysis Product analysis Nickel: When properly exposed to the atmosphere, these steels can be used bare axtm for many applications. The major and minor diameters shall also be increased by the allowance to provide the corresponding minimum and maximum major and minor diameters.
A number in parentheses indicates the year of last reapproval. In case of dissatisfaction with the results of the test, the producer or supplier may make claim for zstm rehearing.
The atmospheric corrosion resistance of these steels is substantially better than that of carbon steel with a63m without copper addition see 5.
Materials and Manufacture 4. Heat analysis Product analysis Chromium: G Recommended nut class and style. 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 one bearing face or both bearing faces, as required, or 3 such other specific lubricant placement criteria as are agreed to between the purchaser and the user. Slotted hex nuts are not normally proof load a56m3.
Note 1 — Throughout this specification, the term class means property class.
Historical Version s – view previous versions of standard. Nominal Nut Size, in. This section may also include astmm of the changes or reasons for the changes, or both. Heat analysis Product analysis Chromium: Work Item s – proposed revisions of this standard.
ASTM AM 碳合金钢螺母_百度文库
Materials and Manufacture 4. 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.
With the written approval of the purchaser, the supplier may substitute as follows: Purchasers are cautioned to consider the dimensional requirements of the application when selecting the most appropriate nut.
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.
NOTE 6—It is the intent of 4. Current edition approved Oct. Heat analysis Product analysis Sulfur: However, if markings are located on q563m bearing surface, they shall be depressed. 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. If you feel that your comments have not received a fair hearing you should make your views known a56m3 the ASTM Committee on Standards, at the address shown below.
When the dimensional style of nut is not designated by the purchaser, hex nuts, Style 1, in conformance with ANSI B Dimensional suitability of the nut for the intended application should be considered before approving substitution of a a63m class. Your comments are invited either for revision of this standard or for additional standards and should be addressed to ASTM International Headquarters. ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentioned in this standard.
When asmt exposed to the atmosphere, these steels can be used bare uncoated for many applications.