October 16, 2020

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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Heat analysis Product analysis Molybdenum: Zinc-coated nuts are nuts intended for use with externally threaded fasteners which are hot-dip zinc-coated, mechanically zinc-coated, or have a plating or coating of sufficient thickness to necessitate overtapping the nut thread to provide assemblability.

Heat analysis Product analysis Vanadium: Thank you for interesting in our services. Class 9 nuts in nominal thread diameters M42 and larger shall conform to dimensions for heavy hex nuts given in ANSI B In addition, the manufacturer may add other distinguishing marks indicating that the nut is atmospheric corrosion resistant astj of a weathering type. A, B, D, DH Hex nuts made to the requirements of DH3 shall be marked with the symbol HX3 on one face.

Others are not suitable. NOTE 1—Throughout this specication, the term class means property class.

Please help us to share our service with your friends. Heat analysis Product analysis Titanium: B Non-zinc-coated nuts are nuts intended for use with aastm 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.

Heat analysis Product analysis Chromium: Size px x x x x I Suitable nut class and style. Nuts With Other Coatings 7. When individual marking is required, the mark shall be the grade letter symbol on one face of the nut.


Details of these supplementary requirements shall be agreed upon in writing between the manufacturer and purchaser. Your comments will receive careful consideration asrm a meeting of the responsible technical committee, which you may attend.

The manufacturer shall afford the inspector all reasonable facilities to satisfy him that the material is being furnished in accordance with this specification. With the written approval of the purchaser, the supplier may substitute as follows: Number of Nuts in Lot and under to to 22 Over 22 Number of Specimens 1 2 3 5 ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentioned in this standard.

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 nut thread to provide assembiability.

Users of this 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. Heat analysis Product analysis Copper: Class 05 nuts are made of carbon or alloy steel conforming to the chemical composition requirements specied for Class 10 nuts in Table 1, and are heat treated as specied in 4. Current edition approved Oct. Class 9 nuts marked on one of the wrenching ats shall have the numeral 9 underlined.

ASTM AM – Free Download PDF

Individual reprints single or multiple copies of this standard may be obtained by contacting ASTM at the above address or at phonefaxor service astm. We are a non-profit group that run this website to asm documents. The atmospheric corrosion resistance of these steels is substantially better than that of carbon steel with or without copper addition see 5. 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.


Purchasers are cautioned to consider the dimensional requirements of the application when selecting the most appropriate nut. When the dimensional style of nut is not designated by the purchaser, a563mm nuts, Style 2, in conformance with ANSI B 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.


Historical Version s – view previous versions ast standard. Heat analysis Product analysis Chromium: NOTE 5—Examples of ordering descriptions are: Selection of the class shall be at the option of the manufacturer.

If you feel that your comments have not received a fair hearing you should make your views known to the ASTM Committee on Standards, at the address shown below. Link to Active This link will always route to the current Active version of the standard. This abstract is a brief summary of the referenced standard. Originally approved in ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date.

Materials shall be tested and the individual grades shall conform to specified values of material such as hardness and proof load, chemical, and mechanical requirements. This specification covers chemical and mechanical requirements for eight property classes of hex and hex-flange carbon and alloy steel nuts for general structural and mechanical uses on bolts, studs, and other externally threaded parts.

NOTE 10—If the overtapping diametral allowance is greater than the limit specied in 7.