Hot forged Black surface ASTM A325M A325 structural heavy hex bolt
Heavy hex bolts have larger and thicker heads than regular or standard hex bolts, and are commonly used in a wide variety of applications. These building fasteners are available in different sizes, both lengths and diameters, although all come with a hex head.
Some types are threaded all the way up the shaft, while others have a smooth shoulder area. All are designed to be used with hex nuts for a secure fit in construction projects, for repairs, and in automotive applications.
SIZE: 1/4" - 1.1//2", M6 -M36. And 600mm Max length.
STANDARD: ASME B18.2.6
THREAD: ASME B1.1 , UNC, UNF, CLASS 2A
FINISHED: Plain, Zinc Plated(Clear/Blue/Yellow/Black), Black oxide, Nickel, Dacromet, H.D.G.
| A325 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| TYPE 2 | Withdrawn November 1991.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. |
| A325 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 |
| A325 Type 1 Chemical Properties |
| 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 | - | - |
| A325 Type 3 Chemical Properties |
| Heat Analysis | 120ksi, % Comp A | 120ksi, % Comp B | 120ksi, % Index | 150ksi, % Index |
| Carbon | 0.33 – 0.40 | 0.38 – 0.48 | 0.30 – 0.52 | 0.30 – 0.53 |
| Manganese | 0.90 – 1.20 | 0.70 – 0.90 | 0.60 min | 0.60 min |
| Phosphorus | 0.035 max | 0.035 max | 0.035 max | 0.035 max |
| Sulfur | 0.040 max | 0.040 max | 0.040 max | 0.040 max |
| Silicon | 0.15 – 0.30 | 0.30 – 0.50 | | |
| Copper | 0.25 – 0.45 | 0.20 – 0.40 | 0.20 – 0.60 | 0.20 – 0.60 |
| Nickel | 0.25 – 0.45 | 0.50 – 0.80 | 0.20 min | 0.20 min |
| Chromium | 0.45 – 0.65 | 0.50 – 0.80 | 0.20 min | 0.20 min |
| Molybdenum | | 0.06 max | 0.10 min | 0.10 min |
| A325 RECOMMENDED HARDWARE |
| Type | Finish | Nut | Washer |
| Type 1 | plain | A563 Grade C, C3, D, DH, DH3 | F436 Type 1 |
| galvanized | A563 Grade DH | F436 Type 1 |
| Type 3 | plain | A563 Grade C3, DH3 | F436 Type 3 |
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Hot Forged Black Structural Heavy Hex Bolts ASTM A325M A325 Images
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