| Material: | High Strength Steel |
|---|---|
| Type: | Round Head |
| Connection: | Common Bolt |
| Head Style: | Round |
| Standard: | DIN, ANSI, JIS, GOST |
| Grade: | 8.8 |
| Customization: |
|---|
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Audited Supplier We are a professional manufacturer of ASTM A325 Bolt,Din933 ASTM A325 hex bolts
Specification ASTM A325 for High Strength Structural Bolts was withdrawn in May 2016, and replaced by ASTM F3125. Today, A325 is a grade of ASTM F3125 Bolts.
ASTM F3125: Standard Specification for High Strength Structural Bolts and Assemblies, Steel and Alloy Steel, Heat Treated, Inch Dimensions 120 ksi and 150 ksi Minimum Tensile Strength.
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
| TYPE 1 | Medium carbon, carbon boron, or medium carbon alloy steel. |
| TYPE 2 | Withdrawn November 1991. |
| TYPE 3 | Weathering steel. |
| T | Fully threaded A325. (Restricted to 4 times the diameter in length) |
| M | Metric A325. |
Connection Types
Mechanical Properties
| Size | Tensile, ksi | Yield, ksi | Elong. %, min | RA %, min |
| 1/2 - 1 | 120 min | 92 min | 14 | 35 |
| 1-1/8 - 1-1/2 | 105 min | 81 min | 14 | 35 |
Recommended Nuts and Washers
| Nuts | Washers | |||
| Type 1 | Type 3 | Type 1 | Type 3 | |
| Plain | Galvanized | Plain | ||
| A563C, C3, D, DH, DH3 | A563DH | A563C3, DH3 | F436-1 | F436-3 |
| Note: Nuts conforming to A194 Grade 2H are a suitable substitute for use with A325 heavy hex structural bolts. The ASTM A563 Nut | ||||
| Heat Analysis | 120ksi, % | 150ksi, % |
|---|---|---|
| Carbon | 0.30 - 0.52 | 0.30 - 0.48* |
| Manganese | 0.60 min | 0.60 min |
| Phosphorus | 0.035 max | 0.035 max |
| Sulfur | 0.040 max | 0.040 max |
| Silicon | 0.15 - 0.30 | - |
| Boron | 0.003 max | 0.003 max |
| Copper | - | - |
| Nickel | - | - |
| Chromium | - | - |
| Molybdenum | - | - |
| *Carbon 0.35-0.53% for 1-1/2” A490/150ksi bolts | ||
ASTM F3125 Marking Requirements & Matching Components
| 120ksi, Type 1 | 120ksi, Type 3 | 150ksi, Type 1 | 150ksi, Type 3 | |
| Marking | A325 | A325 | A490 | A490 |
| Nut, Plain | A563 DH | A563 DH3 | A563 DH | A563 DH3 |
| Nut, Coated | A563 DH | A563 DH3 | A563 DH | A563 DH3 |
| Washer | F436-1 | F436-3 | F436-1 | F436-3 |
| A194 2H nuts are an acceptable substitute for A563 DH nuts | ||||
| Suitable plain finish nut alternatives can be found in the full F3125 text | ||||
| Supplementary requirements S1 and S2 have special marking requirements. | ||||
How to order our A325 hex bolts?
Size:1/2-13
Length:1 1/2
Grade/Spec:ASTM A325 Type 1
Plating/Finish:Plain
Qty:300 pcs
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