ASTM F2403-05

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
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Designation: F 2403 – 05
Standard Specification for
Inch Series Machine Screws, Carbon Steel, 60 000 psi
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Tensile Strength
This standard is issued under the fixed designation F 2403; 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.
1. Scope Screws and Metallic Drive Screws
B18.18.2M Inspection and Quality Assurance for High-
1.1 This specification covers the requirements for non-heat
Volume Machine Assembly Fasteners
treated carbon steel machine screws with nominal diameters of
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2.3 Industrial Fasteners Institute:
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No. 0000 through ⁄4 in. having a minimum ultimate tensile
IFI–138 Straightness Gaging Method and Straightness Lim-
strength of 60 000 psi.
its for Machine, Tapping, and Thread Rolling Screws
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2. Referenced Documents
2.4 ISO Standards:
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ISO 3269:2000 Fasteners–Acceptance Inspection
2.1 ASTM Standards:
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2.5 National Aerospace Standards:
A 751 Test Methods, Practices, and Terminology for
NASM 1312-8 Fastener Test Methods, Method 8, Tensile
Chemical Analysis of Steel Products
Strength
D 3951 Practice for Commercial Packaging
F 606 Test Methods for Determining the Mechanical Prop-
3. Ordering Information
erties of Externally and Internally Threaded Fasteners,
3.1 Orders for machine screws under this specification shall
Washers, and Rivets
include the following (see Note 1):
F 788/F 788M Specification for Surface Discontinuities of
3.1.1 ASTM specification number and date of issue,
Bolts, Screws, and Studs, Inch and Metric Series
3.1.2 Quantity (number of pieces),
F 1470 GuideforFastenerSamplingforSpecifiedMechani-
3.1.3 Head style and drive (ASME B18.6.3),
cal Properties and Performance Inspection
3.1.4 Size (nominal diameter, threads per inch and length)
F 1941 Specification for Electrodeposited Coatings on
(see 7.3), and
Threaded Fasteners (Unified Inch Screw Threads (UN/
3.1.5 Stress relieve anneal, if required (see 4.2).
UNR))
3.1.6 Finish—Specify protective finish type, if required. If
F 2282 Specification for Quality Assurance Requirements
required, specify applicable coating specification, thickness,
for Carbon and Alloy Steel Wire, Rods, and Bars for
and type.
Mechanical Fasteners
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3.1.7 Certification, if required (Section 11).
2.2 ASME Standards:
3.1.8 Supplementary requirements, if required.
B1.1 Unified Screw Threads
3.1.9 Other special requirements, if required.
B1.3M Screw Thread Gauging Systems Dimensional Ac-
3.1.10 Part Identifying Numbering (PIN) System
ceptability Inch and Metric Screw Threads—UN UNR
(optional)—Part Identifying Number will be determined in
UNJMMJ
accordance with ASME B18.24, if required.
B18.6.3 Machine Screws and Machine Screw Nuts
B18.24 Part Identifying Number (PIN) Code System Stan-
NOTE 1—A typical order description follows: ASTM F XXXX – XX,
dard for B18 Externally Threaded Fastener Products
5000 pieces; Machine Screws: Type I Cross Recessed Flat Countersunk
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Head; ⁄4 20 3 3 UNC-2A; Certifications Required.
B18.6.4 Thread Forming and Thread Cutting Tapping
4. Materials and Manufacture
4.1 Materials:
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This specification is under the jurisdiction of ASTM Committee F16 on
FastenersandisthedirectresponsibilityofSubcommitteeF16.06onSmallFastener
Products.
Current edition approved Oct. 1, 2005. Published November 2005.
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For referenced ASTM standards, visit the ASTM website, www.astm.org, or Available from Industrial Fasteners Institute (IFI), 1717 East 9th Street, Suite
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM 1105, Cleveland, OH 44114-2879.
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Standards volume information, refer to the standard’s Document Summary page on Available fromAmerican National Standards Institute (ANSI), 25 W. 43rd St.,
the ASTM website. 4th Floor, New York, NY 10036.
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Available from American Society of Mechanical Engineers (ASME), ASME AvailablefromU.S.GovernmentPrintingOfficeSuperintendentofDocuments,
International Headquarters, Three Park Ave., New York, NY 10016-5990. 732 N. Capitol St., NW, Mail Stop: SDE, Washington, DC 20401.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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F2403–05
TABLE 2 Tensile Load Requirements For Machine Screws
4.1.1 Steel for machine screws shall be made by the
open-hearth, basic-oxygen, or electric-furnace process. Nominal Size or
A
Basic Major Diameter Stress Area, Tensile Strength,
4.1.2 Unless otherwise specified, Specification F 2282 shall
2
of Thread and in. lb, min
be used for procurement control of the material used to
Threads per in.
manufacture machine screws, except chemical compositi
...