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ASTM A194/A194M - 26

Standard Specification for Carbon Steel, Alloy Steel, and Stainless Steel Nuts for Bolts for High Pressure or High Temperature Service, or Both

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Edition date: 2026-02-01
In Force
Available languages: English
Summary:

This specification covers a variety of carbon, alloy, and martensitic and austenitic stainless steel nuts. These nuts are intended for high-pressure or high-temperature service, or both. 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. Each alloy shall conform to the chemical composition requirements prescribed. Hardness tests, proof of load tests, and cone proof load tests shall be made to all nuts to meet the requirements specified.
Keywords: bolting; chemical analysis; coated; marking on bolting components; nuts; plated;
Scope:

1.1 This specification covers a variety of carbon, alloy, and martensitic stainless steel nuts in the size range 1/4 through 4 in. and metric M12 through M100 nominal. It also covers austenitic stainless steel nuts in the size range 1/4 in. and M12 nominal and above. These nuts are intended for high-pressure or high-temperature service, or both. Grade substitutions without the purchaser's permission are not allowed.

1.2 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.

1.3 Supplementary requirements of an optional nature are provided. These shall apply only when specified in the inquiry, contract, and order.

1.4 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.

1.5 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.

1.6 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
ICS: 21.060.20-Nuts
CTN: A01.22 - A01.22

Otras Relaciones

Es referenciada por B994/B994M - 22

Es referenciada por F1476 - 07(2024)

Es referenciada por A320/A320M - 26

Es referenciada por F1718 - 01(2024)

Es referenciada por F432 - 19

Es referenciada por A193/A193M - 25

Es referenciada por F1155 - 10(2024)

Es referenciada por F1565 - 00(2024)

Es referenciada por F2716 - 08(2020)

Es referenciada por F998 - 12(2022)

Es referenciada por A563/A563M - 24

Es referenciada por F3394/F3394M - 23

Es referenciada por F1370 - 92(2024)

Es referenciada por F1554 - 20

Es referenciada por F2798 - 09(2023)

Es referenciada por F2437/F2437M - 17(2023)

Es referenciada por F1510 - 21

Es referenciada por A962/A962M - 25a

Es referenciada por F1508 - 96(2021)

Es referenciada por F3125/F3125M - 25a

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