Detailed Product Description
Dia.: 1/2""-1 1/2"";
Length:1 1/4""-8"";
Surface treatment: Plain ,Black oxygenation, HDG
Scope
The ASTM A325 specification covers high strength heavy hex structural
bolts from ½” diameter through 1-1/2” diameter. These bolts are intended
for use in structural connections and therefore have shorter thread
lengths than standard hex bolts. Refer to the Structural Bolts page of
our site for thread lengths and other related dimensions.
This specification is applicable to heavy hex structural bolts only.
For bolts of other configurations and thread lengths with similar
mechanical properties, see Specification A 449.
Bolts for general applications, including anchor bolts, are covered by
Specification A 449. Also refer to Specification A 449 for quenched and
tempered steel bolts and studs with diameters greater than 1-1/2"" but
with similar mechanical properties.
Types
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TYPE 1
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Medium carbon, carbon boron, or medium carbon alloy steel.
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TYPE 2
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Withdrawn November 1991.
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TYPE 3
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Weathering steel.
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T
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Fully threaded A325. (Restricted to 4 times the diameter in length)
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M
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Metric A325.
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Connection Types
Mechanical Properties
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Size
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Tensile, ksi
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Yield, ksi
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Elong. %, min
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RA %, min
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1/2 - 1
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120 min
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92 min
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14
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35
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1-1/8 - 1-1/2
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105 min
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81 min
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14
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35
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Recommended Nuts and Washers
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Nuts
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Washers
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Type 1
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Type 3
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Type 1
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Type 3
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Plain
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Galvanized
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Plain
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A563C, C3, D, DH, DH3
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A563DH
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A563C3, DH3
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F436-1
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F436-3
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Note: Nuts conforming to A194 Grade 2H are a suitable substitute
for use with A325 heavy hex structural bolts. The ASTM A563 Nut
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