دانلود استاندارد ASTM A194

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Standard Specification forCarbon and Alloy Steel Nuts for Bolts for High Pressure or High Temperature Service, or Both1

۱٫۱ This specification2 covers a variety of carbon, alloy, and
martensitic stainless steel nuts in the size range 1⁄۴ through 4 in.
and metric M6 through M100 nominal. It also covers austenitic
stainless steel nuts in the size range 1⁄۴ in. and M6 nominal and
above. These nuts are intended for high-pressure or hightemperature
service, or both. Grade substitutions without the
purchaser’s permission are not allowed

۱٫۲ Bars from which the nuts are made shall be hot-wrought.
The material may be further processed by centerless grinding
or by cold drawing. Austenitic stainless steel may be solution
annealed or annealed and strain-hardened. When annealed and
strain hardened austenitic stainless steel is ordered in accordance
with Supplementary Requirement S1, the purchaser
should take special care to ensure that 8.2.2, Supplementary
Requirement S1, and Appendix X1 are thoroughly understood.
۱٫۳ Supplementary requirements of an optional nature are
provided. These shall apply only when specified in the inquiry,
contract, and order.
۱٫۴ This specification is expressed in both inch-pound units
and in SI units. However, unless the order specifies the
applicable“ M” specification designation (SI units), the material
shall be furnished to inch-pound units.

۱٫۵ The values stated in either inch-pound units or SI units
are to be regarded separately as standard. The values stated in
each system may not be exact equivalents; therefore, each
system shall be used independently of the other. Combining
values from the two systems may result in non-conformance
with the standard. Within the text, the SI units are shown in
brackets.

۲٫ Referenced Documents
۲٫۱ ASTM Standards:3
A153/A153M Specification for Zinc Coating (Hot-Dip) on
Iron and Steel Hardware
A276 Specification for Stainless Steel Bars and Shapes
A320/A320M Specification for Alloy-Steel and Stainless
Steel Bolting for Low-Temperature Service
A370 Test Methods and Definitions for Mechanical Testing
of Steel Products
A962/A962M Specification for Common Requirements for
Bolting Intended for Use at Any Temperature from Cryogenic
to the Creep Range
B633 Specification for Electrodeposited Coatings of Zinc on
Iron and Steel
B695 Specification for Coatings of Zinc Mechanically Deposited
on Iron and Steel
B696 Specification for Coatings of Cadmium Mechanically
Deposited
B766 Specification for Electrodeposited Coatings of Cadmium
E112 Test Methods for Determining Average Grain Size
E566 Practice for Electromagnetic (Eddy Current) Sorting of
Ferrous Metals

F606 Test Methods for Determining the Mechanical Properties
of Externally and Internally Threaded Fasteners,
Washers, Direct Tension Indicators, and Rivets
F1940 Test Method for Process Control Verification to
Prevent Hydrogen Embrittlement in Plated or Coated
Fasteners
F1941 Specification for Electrodeposited Coatings on
Threaded Fasteners (Unified Inch Screw Threads (UN/
UNR))
F2329 Specification for Zinc Coating, Hot-Dip, Requirements
for Application to Carbon and Alloy Steel Bolts,Screws, Washers, Nuts, and Special Threaded Fasteners
۲٫۲ ASME Standards:4
B 1.1 Unified Screw Threads
B 1.2 Gages and Gaging for Unified Inch Screw Threads
B 1.13M Metric Screw Threads
B 18.2.2 Square and Hex Nuts
B 18.2.4.6M Metric Heavy Hex Nuts
۲٫۳ ISO Standards:5
۴۰۳۳ Hexagon High Nuts (Style 2) – Product A and B

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