ASTM F835M-03

Standard Specification for Alloy Steel Socket Button and Flat Countersunk Head Cap Screws [Metric]

SCOPE
1.1 This specification covers the requirements for quenched and tempered alloy steel hexagon socket button (SBHCS) and flat countersunk (SFHCS) head cap screws M3 through M20 thread sizes having material properties of ISO 898/1 Property Class 12.9.  
1.2 Fasteners meeting this specification are intended for shear type applications and have tensile requirements equivalent to ISO 898/1 Property Class 10.9.
1.3 The hazard statement pertains only to the test method section, Section 11 of this specification. This standard does not purport to address all of the safety problems, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

General Information

• Status: Historical
• Publication Date: 09-May-2003
• ICS: 21.060.10 - Bolts, screws, studs
• Technical Committee: F16 - Fasteners
• Drafting Committee: F16.02 - Steel Bolts, Studs and Nuts

Relations

• Replaces: ASTM F835M-00 - Standard Specification for Alloy Steel Socket Button and Flat Countersunk Head Cap Screws [Metric]
• Effective Date: 10-May-2003
• Replaced By: ASTM F835M-04 - Standard Specification for Alloy Steel Socket Button and Flat Countersunk Head Cap Screws [Metric]
• Effective Date: 01-Aug-2004
• Referred By: ASTM F2328M-17(2022) - Standard Test Method for Determining Decarburization and Carburization in Hardened and Tempered Threaded Steel Bolts, Screws, Studs, and Nuts (Metric)
• Effective Date: 10-May-2003

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation: F 835M – 03
METRIC
Standard Specification for
Alloy Steel Socket Button and Flat Countersunk Head Cap
1
Screws [Metric]
This standard is issued under the fixed designation F 835M; 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 * Properties of Externally and Internally Threaded Fasteners,
5
Washers, and Rivets [Metric]
1.1 This specification covers the requirements for quenched
F 788/F 788M Specification for Surface Discontinuities of
and tempered alloy steel hexagon socket button (SBHCS) and
5
Bolts, Screws, and Studs, Inch and Metric Series
flat countersunk (SFHCS) head cap screws M3 through M20
2.2 ANSI/ASME Standards:
thread sizes having material properties of ISO 898/1 Property
6
B18.3.4M Hexagon Socket Button Head Cap Screws
Class 12.9.
B18.3.5M Hexagon Socket Flat Countersunk Head Cap
1.2 Fasteners meeting this specification are intended for
6
Screws
shear type applications and have tensile requirements equiva-
7
B18.24.1 Part Identifying Number (PIN) Code System
lent to ISO 898/1 Property Class 10.9.
2.3 ISO Standard:
1.3 The hazard statement pertains only to the test method
898/1 Mechanical Properties of Fasteners, Bolts, Screws
section, Section 11 of this specification. This standard does not
6
and Studs
purport to address all of the safety problems, if any, associated
with its use. It is the responsibility of the user of this standard
3. Ordering Information
to establish appropriate safety and health practices and
3.1 Orders for material under this specification shall in-
determine the applicability of regulatory limitations prior to
clude:
use.
3.1.1 Quantity (number of screws).
2. Referenced Documents 3.1.2 Dimensions, including nominal thread designation,
thread pitch and nominal screw length (millimetres). A stan-
2.1 ASTM Standards:
dard part number may be used for this definition.
A 751 Test Methods, Practices, and Terminology for
2
3.1.3 Name of the screw: SBHCS or SFHCS.
Chemical Analysis of Steel Products
3 3.1.4 Coating, if required. If a protective finish other than
D 3951 Practice for Commercial Packaging
4
black oxide is required, it must be specified on the order or
E 3 Practice for Preparation of Metallographic Specimens
product standard.
E 18 Test Methods for Rockwell Hardness and Rockwell
4
3.1.5 Lot testing, if required (see 10.3).
Superficial Hardness of Metallic Materials
4 3.1.6 Certification, if required (see 14.1).
E 112 Test Methods for Determining Average Grain Size
3.1.7 ASTM designation and year of issue, and
E 384 Test Method for Microindentation Hardness of Ma-
4
3.1.8 Any special requirements.
terials
3.1.9 For establishment of a part identifying system, see
F 606M Test Methods for Determining the Mechanical
ASME B18.24.1.
3.2 Example—1000 pieces M6 3 1 3 25 SBHCS lot tensile
test, ASTM F 835M – XX.
1
This specification is under the jurisdiction of ASTM Committee F16 on
Fasteners and is the direct responsibility of Subcommittee F 16.02 on Steel Bolts,
Nuts, Rivets, and Washers.
5
Current edition approved May 10, 2003. Published June 2003. Originally Annual Book of ASTM Standards, Vol 01.08.
6
approved in 1983. Last previous edition approved in 2000 as F 835M – 00. Available from American National Standards Institute (ANSI), 25 W. 43rd St.,
2
Annual Book of ASTM Standards, Vol 01.03. 4th Floor, New York, NY 10036.
3 7
Annual Book of ASTM Standards, Vol 15.09. Available from American Society of Mechanical Engineers (ASME), ASME
4
Annual Book of ASTM Standards, Vol 03.01. International Headquarters, Three Park Ave., New York, NY 10016-5990.
*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.
1

---------------------- Page: 1 ----------------------
F835M–03
A
TABLE 2 Chemical Requirements
4. Materials and Manufacture
4.1 The screws shall be fabricated from alloy steel made to
Composition, %
Element
fine grain practice. In the event of controversy over grain size,
Heat Analysis Product Analysis
referee tests on finished screws conducted in accordance with
Carbon 0.30 to 0.48 0.28 to 0.50
Test Methods E 112 shall prevail.
Phosphorus, max 0.035 0.040
4.2 Screws shall be cold upset or extruded, or both. Sulfur, max 0.040 0.045
A
4.3 Screws shall be roll threaded.
See for alloy requirements.
4.4 Screws shall be heat treated by quenching in oil from
above the transformation temperature and then tempering by
TABLE 3 Minimum Ultimate Tensile Loads
re
...