A307

WINDO METAL offers an extensive collection of ASTM A307 Grade A Fasteners, which has excellent mechanical properties at sub – zero temperatures. Important properties of ASTM A307 Carbon Steel Fasteners include corrosion resistance, inherent resistance to macro – fouling, good tensile strength, excellent ductility when annealed, and thermal conductivity. In addition, ASTM A307 Grade A Bolt also gives excellent service in flowing sea water even at high velocity, but in stagnant or very low – velocity sea water severe local attack may occur under fouling organisms or other deposits.

ASTM A307 Grade A Specifications
Grade A : Hex Headed Bolts, studs and threaded rods or any other bolting having a minimum tensile strength of 60 ksi, intended for general purpose applications.
Grade B : Hex Headed Bolts, studs, and threaded rods or any other bolting having a tensile strength of 60 to 100 ksi and intended for flanged joints in piping systems.

WINDO ASTM A307 Grade PDF Download >>WINDO ASTM A325M  Grade PDF Download

We also offer these ASTM A307 Grade A Stud Bolts in customized sizes and shapes to our esteemed patrons. For high – quality cylinder locks and locking systems, cylinder cores are made from wear – resistant these ASTM A307 Grade A Bolts. Small additions of aluminium and titanium form ASTM A307 Carbon Steel Studs with the same corrosion resistance but with much greater strength due to gamma prime formation on aging. These ASTM A307 Carbon Steel Bolts has expansion characteristics amenable for heat exchangers and condensers, good thermal conductivity and ductility at cryogenic temperatures and beneficial antimicrobial touch surface properties. Compared to steel, ASME SA307 Grade A Fasteners is very difficult to machine as it work-hardens very quickly. These ASTM A307 Grade A Stud offers exceptional resistance to hydrofluoric acid in all concentrations up to the boiling point.

ASTM A307 Grade A Specification for medium strength carbon steel bolts, studs, threaded rods & similar externally fasteners with min 60 ksi tensile strength.
ASTM A307 Grade A is a standard material specification for medium strength carbon steel fasteners specially bolts, studs and threaded rods for general purpose applications. Grade A is a heat treated carbon steel bolting material with minimum tensile requirement of 60 ksi and hardness range from 121 to 241 BHN. ASTM A307 specification covers requirements for chemical composition, mechanical properties, hardness, heat-treatment and recommended nuts-washers for Grade A Bolts.

Chemical Composition
Element Grade A
Carbon 0.29
Manganese, max 1.20
Phosphorus, max 0.04
Sulfur, max 0.15

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Full Threaded Grade 8.8s ASTM A325 A490 Bolts

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ASTM Heavy Hex Bolt and Nut

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Hexagonal Structural ASTM Heavy Hex Bolt

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Black Heavy Hex Bolt

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1/2-13 X 1 A307B Heavy Hex Head Bolt Galvanized

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