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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The atmospheric corrosion resistance of these steels is substantially better than that of carbon steel with or without copper addition see 5.

Heat analysis Product analysis Silicon: Classes 8S3 and 10S3 nuts have atmospheric corrosion resistance and weathering characteristics comparable to those of the steels. Such nuts shall be a63m oversize to have internal threads with maximum and minimum limits that exceed the maximum and minimum limits specied for metric coarse internal threads with Grade 6H tolerances by the following diametral allowances: We need your help to maintenance this website.

It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for its use zstm application.


Heat analysis Product analysis Manganese: NOTE 9—If the over-tapping diametral allowance is greater than the limit specied in 7.

Heavy Hexagon Nuts ASTM AM

In addition, the manufacturer may add other distinguishing marks indicating that the nut is atmospheric corrosion resistant and of a weathering type. C, to Specification F Current edition approved Oct. Heat analysis Product analysis Titanium: Heat analysis Product analysis Nickel: 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. Your comments are invited either for revision of this standard or for additional standards and should be addressed to ASTM International Headquarters.

Specification F, or otherwise hot-dip coated, shall be tapped oversize by a diametral amount a56m to permit assembly on the coated bolt thread, unless other requirements are specified in the inquiry or purchase order.

Please fill this form, we will try to respond as soon as possible. See Guide G for methods of estimating corrosion resistance of low alloy steels.

Selection of the class shall be at the option of the manufacturer. Note 1 — Throughout this specification, the term class means property class.



Heat analysis Product analysis Manganese: With the written approval of the purchaser, the supplier may substitute as follows: Threads of nuts tapped prior to zinc coating 4.

Originally approved in A, B, D, DH Originally approved in Class 9 nuts marked on one of the wrenching ats shall have the numeral 9 underlined.

When this heat treatment is used, particular attention shall be paid to the requirements in 6. The atmospheric corrosion resistance of these steels is substantially better than that of carbon steel with or without copper addition see 6.

This section may also include descriptions of the changes or reasons for the changes, or both. Materials and Manufacture 4. A superscript epsilon e indicates an editorial change since the last revision or reapproval.

We need your help! Heat analysis Product analysis Chromium: Number of Tests 9. However, if markings are located on the bearing surface or on one of the wrenching ats, they shall a563mm depressed.