Carbon Steel Fasteners Nut Bolts Manufacturer in India
ASTM A193 Grade B7 Bolts and ASTM A194 2H hex nuts exporter in India
| Carbon Steel Fasteners: |
ASTM A193 Grade B7 / ASTM A194 2H Standard Specification for Carbon Steel Bolts, Studs, and Threaded Rod 60000 PSI Tensile StrengthHot Deep Galvanized, Bloodied Etc. |
| Alloy Steel Fasteners: |
| Bare Condition, Galvanized, Phosphetised, Cadium Plated |
1. Scope
1.1 This specification2 covers the chemical and mechanical requirements of two grades of carbon steel bolts and studs in sizes1/4 in. through 4 in. The fasteners are designated by “Grade” denoting tensile strength and intended use, as follows:
Grade |
Description |
|---|---|
Grade A |
Bolts, studs, and threaded rod having a minimum tensile strength of 60 ksi and intended for general applications, |
Grade B |
Bolts, studs, and threaded strength of 60 to 100 ksi and intended for flanged joints in piping systems with cast iron flanges, and |
Grade C |
Replaced by Specification F1554 Gr.36 |
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 A563. Unless otherwise specified, the grade and style of nut for each grade of fastener, of all surface finishes, shall be as follows:
Fastener Grade and Size |
Nut Grade and Style A |
|---|---|
A 1/4 to 11/2 in. |
A, hex |
A over 11/2 to 4 in. |
A, heavy hex |
B, 1/4 to 4 in. |
A, heavy hex |
1.4 The values stated in inch-pound units are to be regarded as standard. No other units of measurement are included in this 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 F1789 unless otherwise defined herein.
2. Referenced Documents (purchase separately)
ASTM Standards
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 Standards
B 1.1 Unified Screw Threads Available from American National Standards Institute (ANSI), 25 W. 43rd St., 4th Floor, New York, NY 10036, https://www.ansi.org. B 18.2.1 Square and Hex Bolts and Screws B 18.24 Part Identifying Number (PIN) Code System Available from American Society of Mechanical Engineers (ASME), ASME International Headquarters, Three Park Ave., New York, NY 10016-5990, https://www.asme.org. B18.31.3 Threaded Rods (Inch Series)Keywords
Bolts - Bolts, Screws And Studs - Carbon Steel - Chemical Composition - Steel - Studs - Tensile Strength
ICS Code
ICS Number Code 21.060.10 (Bolts, screws, studs)
UNSPSC Code
UNSPSC Code 31161600(Bolts); 31163300(Studs)
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