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 Manganese: B For Classes 10 and 12, a sulfur content of 0.

Packaging and Package Marking Your comments will receive careful a563j at a meeting of the responsible technical committee, which you may attend.

NOTE 2— Proof loads are computed by multiplying proof load stress Table 3 by thread stress area and dividing by Nuts With Other Coatings 7.

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 a5663m. 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.

This shall be the only hardness requirement for nuts that are proof load tested. 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. Nickel or molybdenum may be used. Such nuts shall be tapped oversize to have internal threads with maximum and minimum limits that exceed the maximum and a536m limits specied for metric coarse internal threads with Grade 6H tolerances by the following diametral allowances: Rejection should be reported to the producer or supplier promptly and in writing.


Heavy Hexagon Nuts ASTM AM

The atmospheric corrosion resistance of these steels is substantially better than that of carbon steel with or without copper addition see 5. A number in parentheses indicates the year of last reapproval.

Note 1 — Throughout this specification, the term class means property class.

Heat analysis Product analysis Copper: Selection of steel analysis shall be the option of the manufacturer. In case of dissatisfaction with the results of the test, the producer or supplier may make claim for a rehearing. 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 Classes 8S3 and 10S3 nuts have atmospheric corrosion resistance and weathering characteristics comparable to those of the steels.

ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentioned in this standard. Note 3 — This specification is the metric companion of Specification A NOTE 7—The proof load of a nut is the axially applied load the nut must withstand without thread stripping or rupture.


Current edition approved Oct. Heat analysis Product analysis Silicon: When the dimensional style of nut is not designated by the purchaser, hex nuts, Style 1, in conformance with ANSI B Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard. Threads of nuts tapped prior to zinc coating 4.


C, to Specification F NOTE 3—An example of an ordering description follows: Others are not suitable. NOTE 10—If the atm diametral allowance is greater than the limit specied in 7.

Heat analysis Product analysis Phosphorus: When properly exposed to the atmosphere, these steels can be used bare uncoated for many applications. This section may also include descriptions of the changes or reasons for the changes, or both. We need your help to maintenance this website.