SUPERSEDED (see Active link, below)
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1.1 This specification covers the chemical and mechanical requirements of three grades of carbon steel bolts and studs in sizes ¼ in. through 4 in. The fasteners are designated by “Grade” denoting tensile strength and intended use, as follows:
|Grade A||Bolts and studs having a minimum tensile strength of 60 ksi and intended for general applications,|
|Grade B||Bolts and studs having a tensile strength of 60 to 100 ksi and intended for flanged joints in piping systems with cast iron flanges, and|
|Grade C||Replaced by Specification F 1554|
1.1.1 The term studs includes stud stock, sometimes referred to as threaded rod.
1.2 This specification does not cover requirements for machine screws, thread cutting/forming screws, mechanical expansion anchors or similar externally threaded fasteners.
1.3 Suitable nuts are covered in Specification A 563 A Nuts of other grades and styles having specified proof load stresses (Specification A 563
Fastener Grade and Size
Nut Grade and StyleA
A ¼ to 1½in. A, hex A over 11/2 to 4 in. A, heavy hex B, ¼ to 4 in. A, heavy hex
A Nuts of other grades and styles having specified proof load stresses (Specification A 563
1.4 The values stated in inch-pound units are to be regarded as the standard.
1.5 Supplementary Requirement S1 of an optional nature is provided, which describes additional restrictions to be applied when bolts are to be welded. It shall apply only when specified in the inquiry, order, and contract.
1.6 Terms used in this specification are defined in Terminology F 1789
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
A563 Specification for Carbon and Alloy Steel Nuts
A706/A706M Specification for Low-Alloy Steel Deformed and Plain Bars for Concrete Reinforcement
A751 Test Methods, Practices, and Terminology for Chemical Analysis of Steel Products
B695 Specification for Coatings of Zinc Mechanically Deposited on Iron and Steel
F606 Test Methods for Determining the Mechanical Properties of Externally and Internally Threaded Fasteners, Washers, Direct Tension Indicators, and Rivets
F1470 Practice for Fastener Sampling for Specified Mechanical Properties and Performance Inspection
F1554 Specification for Anchor Bolts, Steel, 36, 55, and 105-ksi Yield Strength
F1789 Terminology for F16 Mechanical Fasteners
F2329 Specification for Zinc Coating, Hot-Dip, Requirements for Application to Carbon and Alloy Steel Bolts, Screws, Washers, Nuts, and Special Threaded Fasteners
ASME StandardsB18.31.3 Threaded Rods (Inch Series)
ICS Number Code 21.060.10 (Bolts, screws, studs)
UNSPSC Code 31161600(Bolts); 31163300(Studs)