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ASTM A307

Scope

The ASTM A307 specification covers carbon steel bolts and studs ranging from 1/4″ through 4″ diameter. This is your everyday, run of the mill bolt specification often manufactured using A36 round bar. There are three grades A, B, and C* which denote tensile strength, configuration, and application. Refer to the Mechanical Properties Chart for the subtle strength differences within each grade.

A307 Grades

Grade AA307Headed bolts, threaded rods and bent bolts intended for general applications.
Grade BA307Heavy hex bolts and studs intended for flanged joints in piping systems with cast iron flanges.
Grade C*A307Nonheaded anchor bolts, either bent or straight, intended for structural anchorage purposes. The end of a grade C anchor bolt intended to project from the concrete will be painted green for identification purposes. Permanent marking is a supplemental requirement. *As of August 2007, grade C has been replaced by specification F1554 grade 36. We will continue to supply grade C, if required by the project.

A307 Mechanical Properties

Grade Tensile, ksi Yield, min, ksi Elong %, min
A60 min--18
B60 - 100--18
C*58 - 803623

A307 Chemical Properties

Element Grade A Grade B
Carbon, max0.29%0.29%
Manganese, max1.20%1.20%
Phosphorus, max0.04%0.04%
Sulfur, max0.15%0.05%

A307 Recommended Hardware

Nuts Washers
A307 Grades A & C* A307 Grade B
1/4 - 1-1/2 1-5/8 - 4 1/4 - 4
A563A HexA563A Heavy HexA563A Heavy HexF844

 

ASTM Specifications for Bolt Fasteners

A193
 - Alloy steel and stainless steel bolting materials for high temperature or high pressure service.
A307
  •  - Carbon steel bolts and studs, 60,000 psi tensile strength.
A320
  •  - Alloy steel and stainless steel bolting materials for low temperature service.
A325
  •  - Structural bolts, steel, heat treated, 120/105 ksi minimum tensile strength.
A354
  •  - Quenched and tempered alloy bolts, studs, and other externally threaded fasteners.
A449
  •  - Quenched and tempered steel bolts and studs for general use.
A453
  •  - High temperature Bolting with expansion co-efficient comparable to Austenitic Stainless Steel
A490
  •  - Structural bolts, alloy steel, heat treated, 150 ksi minimum tensile strength.
F568
 - Standard for metric bolts, screws and studs that are used in general engineering applications
F593
  •  - Stainless steel bolts, hex cap screws, and studs.
F1554
  •  - Anchor bolts designed to anchor structural supports to concrete foundations.

ASTM Specifications for Nuts

ASTM Specifications for Washers

F436
- Specification for Hardened Steel Washers , carbon steel, steel, washers, weathering steel, Hardened steel washers
F844
  • - Standard Specification for Washers, Steel, Plain (Flat), Unhardened for General Use
F959
  • - Standard Specification for Compressible-Washer-Type Direct Tension Indicators for Use with Structural Fasteners

 

Astm A307 Carbon steel bolts and studs Application Industries

Sunflex Metal Industries are engaged in manufacturing of robust quality of Astm A307 Carbon steel bolts and studs. These Astm A307 Carbon steel bolts and studs are widely used in the following industries:

Astm A307 Carbon steel bolts and studs Mining Industries
Astm A307 Carbon steel bolts and studs Transport Industries- Rail and Road
Astm A307 Carbon steel bolts and studs Construction Industries / Building Systems
Astm A307 Carbon steel bolts and studs Manufacturing Industries
Astm A307 Carbon steel bolts and studs Agriculture Industries
Astm A307 Carbon steel bolts and studs Energy Industries
Astm A307 Carbon steel bolts and studs Water Industries
Astm A307 Carbon steel bolts and studs Automotive Industries
Astm A307 Carbon steel bolts and studs Ship Building Industries
Astm A307 Carbon steel bolts and studs Nuclear Power Plant
Astm A307 Carbon steel bolts and studs Paper & Pulp Industries
Astm A307 Carbon steel bolts and studs Sugar Industries
Astm A307 Carbon steel bolts and studs Engineering Cement Industries
Astm A307 Carbon steel bolts and studs Petro-Chemical Industries
Astm A307 Carbon steel bolts and studs Food Industries
Astm A307 Carbon steel bolts and studs Oil & Gas Industries
Astm A307 Carbon steel bolts and studs Chemical & Pharmaceutical Industries

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