ASTM F2403

This specification covers the requirements for non-heat treated carbon steel machine screws. Steel for the machine screws shall be made by open-hearth, basic-oxygen, or electric-furnace process and the screws shall be manufactured by cold forming, thread rolling, and stress-relieve annealing. Heat and product analysis shall be performed to determine the chemical composition of the specimen conforming to the requirements for carbon, phosphorus, and sulfur. Specimens shall be subjected to mechanical tests to verify conformance to the mechanical property requirements such as tensile strength, Rockwell hardness, and ductility.

This abstract is a brief summary of the referenced standard. It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for its use and application. ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date.

1. Scope

1.1 This specification covers the requirements for non-heat treated carbon steel machine screws with nominal diameters of No. 0000 through ¾ in. having a minimum ultimate tensile strength of 60 000 psi.

1.2 The values stated in inch-pound units are to be regarded as standard. No other units of measurement are included in this standard.

2. Referenced Documents

National Aerospace Standards
NASM1312-8 Fastener Test Methods, Method 8, Tensile Strength
ASTM Standards
A751 Test Methods, Practices, and Terminology for Chemical Analysis of Steel Products
F1470 Practice for Fastener Sampling for Specified Mechanical Properties and Performance Inspection
F1941 Specification for Electrodeposited Coatings on Threaded Fasteners (Unified Inch Screw Threads (UN/UNR))
F2282 Specification for Quality Assurance Requirements for Carbon and Alloy Steel Wire, Rods, and Bars for Mechanical Fasteners
F606 Test Methods for Determining the Mechanical Properties of Externally and Internally Threaded Fasteners, Washers, Direct Tension Indicators, and Rivets
F788/F788M Specification for Surface Discontinuities of Bolts, Screws, and Studs, Inch and Metric Series
ASME Standards
B18.18.2M Inspection and Quality Assurance for High-Volume Machine Assembly Fasteners
ISO Standards
ISO3269:2000 Fasteners-Acceptance Inspection
Industrial Fasteners Institute
IFI–138 Straightness Gaging Method and Straightness Limits for Machine, Tapping, and Thread Rolling Screws

Index Terms

carbon steel; machine screws, Carbon steel; Inch series; Machine screws; Tensile strength ICS Number Code 21.060.10 (Bolts, screws, studs)

Citing ASTM Standards

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