ASTM A194/A194M-03

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

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 M6 through M100 nominal. It also covers austenitic stainless steel nuts in the size range 1/4 in. and M6 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 7.2.2, Supplementary Requirement S1, and Appendix X1 are thoroughly understood.
1.3 Supplementary requirements (S1 through S6) 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. Within the text, the SI units are shown in brackets. The values stated in each system are not exact equivalents; therefore, each system must be used independently of the other. Combining values from the two systems may result in noncomformance with the specification.

General Information

• Status: Historical
• Publication Date: 09-Jan-2003
• ICS: 21.060.20 - Nuts
• Technical Committee: A01 - Steel, Stainless Steel and Related Alloys
• Drafting Committee: A01.22 - Steel Forgings and Wrought Fittings for Piping Applications and Bolting Materials for Piping and Special Purpose Applications

Relations

• Replaces: ASTM A194/A194M-01a - Standard Specification for Carbon and Alloy Steel Nuts for Bolts for High-Pressure or High-Temperature Service, or Both
• Effective Date: 10-Jan-2003
• Replaced By: ASTM A194/A194M-03b - Standard Specification for Carbon and Alloy Steel Nuts for Bolts for High Pressure or High Temperature Service, or Both
• Effective Date: 28-Oct-2003
• Referred By: ASTM F998-12(2022) - Standard Specification for Centrifugal Pump, Shipboard Use
• Effective Date: 10-Jan-2003
• Referred By: ASTM F1155-10(2019) - Standard Practice for Selection and Application of Piping System Materials
• Effective Date: 10-Jan-2003
• Referred By: ASTM F3125/F3125M-22 - Standard Specification for High Strength Structural Bolts and Assemblies, Steel and Alloy Steel, Heat Treated, Inch Dimensions 120 ksi and 150 ksi Minimum Tensile Strength, and Metric Dimensions 830 MPa and 1040 MPa Minimum Tensile Strength
• Effective Date: 10-Jan-2003
• Referred By: ASTM F2798-09(2023) - Standard Specification for Sealless Lube Oil Pump with Oil Through Motor for Marine Applications
• Effective Date: 10-Jan-2003
• Referred By: ASTM F1510-21 - Standard Specification for Rotary Positive Displacement Pumps, Ships Use
• Effective Date: 10-Jan-2003
• Referred By: ASTM F1718-01(2019) - Standard Specification for Rotary Positive Displacement Distillate Fuel Pumps
• Effective Date: 10-Jan-2003
• Referred By: ASTM F1565-00(2019) - Standard Specification for Pressure-Reducing Valves for Steam Service
• Effective Date: 10-Jan-2003
• Referred By: ASTM F1370-92(2019)e1 - Standard Specification for Pressure-Reducing Valves for Water Systems, Shipboard
• Effective Date: 10-Jan-2003
• Referred By: ASTM F1508-96(2021) - Standard Specification for Angle Style, Pressure Relief Valves for Steam, Gas, and Liquid Services
• Effective Date: 10-Jan-2003
• Referred By: ASTM A320/A320M-22a - Standard Specification for Alloy-Steel and Stainless Steel Bolting for Low-Temperature Service
• Effective Date: 10-Jan-2003
• Referred By: ASTM F3394/F3394M-20 - Standard Specification for Hardened Steel Backup and Reaction Washers Inch and Metric Dimensions<rangeref></rangeref >
• Effective Date: 10-Jan-2003
• Referred By: ASTM F2437/F2437M-17 - Standard Specification for Carbon and Alloy Steel Compressible-Washer-Type Direct Tension Indicators for Use with Cap Screws, Bolts, Anchors, and Studs
• Effective Date: 10-Jan-2003
• Referred By: ASTM A563/A563M-21ae1 - Standard Specification for Carbon and Alloy Steel Nuts (Inch and Metric)
• Effective Date: 10-Jan-2003

Standards Content (Sample)

NOTICE: This standard has either been superceded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
Endorsed by
Designation: A 194/A 194M – 03
Manufacturers Standardization Society
of the Valve and Fittings Industry
Used in USNRC-RDT Standards
Standard Specification for
Carbon and Alloy Steel Nuts for Bolts for High Pressure or
1
High Temperature Service, or Both
This standard is issued under the fixed designation A 194/A 194M; the number immediately following the designation indicates the year
of original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval.
A superscript epsilon (e) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the Department of Defense.
1. Scope * A 153/A 153M Specification for Zinc Coating (Hot-Dip) on
3
2
Iron and Steel Hardware
1.1 This specification covers a variety of carbon, alloy, and
4
1 A 276 Specification for Stainless Steel Bars and Shapes
martensitic stainless steel nuts in the size range ⁄4 through 4 in.
A 320/A 320M Specification for Alloy-Steel Bolting Ma-
and metric M6 through M100 nominal. It also covers austenitic
5
terials for Low-Temperature Service
1
stainless steel nuts in the size range ⁄4 in. and M6 nominal and
A 370 Test Methods and Definitions for Mechanical Testing
above. These nuts are intended for high-pressure or high-
4
of Steel Products
temperature service, or both. Grade substitutions without the
A 962/A 962M Specification for Common Requirements
purchaser’s permission are not allowed.
for Steel Fasteners or Fastener Materials, or Both, Intended
1.2 Bars from which the nuts are made shall be hot-wrought.
for Use at Any Temperature from Cryogenic to the Creep
The material may be further processed by centerless grinding
5
Range
or by cold drawing. Austenitic stainless steel may be solution
B 633 Specification for Electrodeposited Coatings of Zinc
annealed or annealed and strain-hardened. When annealed and
6
on Iron and Steel
strain hardened austenitic stainless steel is ordered in accor-
B 695 Specification for Coatings of Zinc Mechanically
dance with Supplementary Requirement S1, the purchaser
6
Deposited on Iron and Steel
should take special care to ensure that 7.2.2, Supplementary
B 696 Specification for Coatings of Cadmium Mechanically
Requirement S1, and Appendix X1 are thoroughly understood.
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Deposited
1.3 Supplementary requirements (S1 through S6) of an
B 766 Specification for Electrodeposited Coatings of Cad-
optional nature are provided. These shall apply only when
6
mium
specified in the inquiry, contract, and order.
7
E 112 Test Methods for Determining Average Grain Size
1.4 This specification is expressed in both inch-pound units
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2.2 American National Standards:
and in SI units. However, unless the order specifies the
B 1.1 Unified Screw Threads
applicable“ M” specification designation (SI units), the mate-
B 1.13M Metric Screw Threads
rial shall be furnished to inch-pound units.
B 18.2.2 Square and Hex Nuts
1.5 The values stated in either inch-pound units or SI units
B 18.2.4.6M Metric Heavy Hex Nuts
are to be regarded separately as standard. Within the text, the
SI units are shown in brackets. The values stated in each
3. Terminology
system are not exact equivalents; therefore, each system must
3.1 Definitions of Terms Specific to This Standard:
be used independently of the other. Combining values from the
3.1.1 Austenitic Grades—All grades with a prefix of “8” or
two systems may result in noncomformance with the specifi-
“9”.
cation.
3.1.2 Ferritic Grades—Grades 1, 2, 2H, 2HM, 3, 4, 6, 6F, 7,
2. Referenced Documents 7M, and 16.
3.1.3 Lot:
2.1 ASTM Standards:
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This specification is under the jurisdiction of ASTM Committee A01 on Steel,
3
Stainless Steel, and Related Alloys and is the direct responsibility of Subcommittee Annual Book of ASTM Standards, Vol 01.06.
4
A01.22 on Steel Forgings and Wrought Fittings for Piping Applications and Bolting Annual Book of ASTM Standards, Vol 01.03.
5
Materials for Piping and Special Purpose Applications. Annual Book of ASTM Standards, Vol 01.01.
6
Current edition approved Jan. 10, 2003. Published April 2003. Originally Annual Book of ASTM Standards, Vol 02.05.
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approved in 1936. Last previous edition approved in 2001 as A 194/A 194M-01a. Annual Book of ASTM Standards, Vol 03.01.
2 8
For ASME Boiler and Pressure Vessel Code applications see related Specifi- Available from American National Standards Institute, 25 W. 43rd St., 4th
cation SA-194 in Section II of that code. Floor, New York, NY 10036.
*A Summary of Changes section appears at the end of this standard.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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