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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When required, they are covered by the applicable bolt specification. Number of Nuts in Lot and under to to 22 Over 22 Number of Specimens 1 2 3 5 The atmospheric corrosion resistance of these steels is substantially better than that of carbon steel with or without copper addition see a563. Heat analysis Product analysis Vanadium: When the dimensional style of the nut is not designated by the purchaser, hex nuts, Style 2, in conformance with ANSI B NOTE 10—If the overtapping diametral allowance is greater than the limit a56m3 in 7.

DC heat product 0.

However, if markings are located on the bearing surface, they shall be depressed. 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.

Additional tests of individual shipments of material are not ordinarily contemplated. Your comments will receive careful consideration at a meeting of the responsible technical committee, which you may attend.

See Guide G for methods of estimating corrosion resistance of low alloy steels. When properly exposed to the atmosphere, these steels can be used bare uncoated for many applications. aatm

ASTM AM – Free Download PDF

When individual marking is required, the mark shall be the grade letter symbol on one face of the nut. Heat analysis Product analysis Vanadium: Slotted hex nuts are not normally proof load tested. Materials and Manufacture 4.


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. Nuts With Other Coatings 7. 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. This section may also include descriptions of the changes or reasons for the changes, or both.

This standard a5663m been approved for use by agencies of the Department of Defense. Please fill this form, we will try to respond as soon as possible. A5663m 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 5a63m the nut thread to provide assembiability.

Individual heats of steel are not identified in the finished product.

Individual heats of steel are not identied in the nished product. Class 9 nuts marked on one of the wrenching ats shall have the numeral 9 underlined. NOTE 6—It is the intent of 4. The two identifications shall preferably be in different locations and, when on the same level, shall be separated by at least two spaces.

Individual reprints single or multiple copies of this standard may be obtained by contacting ASTM at the above address or at phonefaxor service astm. In addition, the manufacturer may add other distinguishing marks indicating that the z563m is atmospheric corrosion resistant and of a weathering type.

NOTE 7—The proof load of a nut is the axially applied load the nut must withstand without thread stripping or rupture. Link to Active This link will always route to the current Active version of the standard. 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 a563k below.


Selection of the class shall asm at the option of the manufacturer. Heat analysis Product analysis Manganese: However, if markings are located on the bearing surface or on one of the wrenching ats, they shall be depressed.

Heavy Hexagon Nuts ASTM AM

This abstract is a brief summary of the referenced standard. Historical Version s – view previous versions of standard. The manufacturer shall afford the inspector all reasonable facilities to satisfy him that the material is being furnished in accordance with this specication. When the dimensional style of nut is not designated by the purchaser, hex nuts, Style 2, in conformance with ANSI B Thank you for interesting in our services. When A zinc-coated inch series nuts are supplied, the zinc coating, overtapping, lubrication and rotational capacity testing shall be in accordance with Specification A Your comments are invited either for revision of this standard or for additional standards and should be addressed to ASTM International Headquarters.

Nickel or molybdenum may be used. Rejection should be reported to the producer or supplier promptly and in writing.

Heat analysis Product analysis Sulfur: Heat analysis Product analysis Chromium: Markings located on the top or bearing surface or on the top of the ange shall be positioned with the base of the numeral s oriented toward the nut periphery.

Packaging and Package Marking Note 3 — This specification is the metric companion of Specification A NOTE 3—An example of an ordering description follows: