ASTM A307 Bolts comply with national standards for fasteners and ideal for high-temperature, high-pressure or other special-purpose environments and application. ASTM A307 is standard bolts made of either carbon steel or steel alloy. This ASTM A307 Fasteners specification does not cover the requirements of external threaded fasteners. They widely use with a fastener which has equivalent standard or grade. ASTM A307 Bolts are available in a variety of materials, grades, size, design, finishing and many other specifications. ASTM A307 available in three grades, all of them have unique characteristics and features. Various A307 grades are suitable for different applications and projects. This American standard ASTM A307 can use to support structures and industrial equipment.
We also offer ASTM A307 specification American fasteners including carbon steel bolts, studs and threaded rods. For custom ASTM A307 bolts, we strictly follow the client’s specification. We satisfied our customer with our services and high-quality product. Below you can see the common ASTM A307 grades.
| Grade | Description |
|---|---|
| A | Headed bolts, threaded rods and bent bolts intended for general applications |
| B | Heavy hex bolts and studs intended for flanged joints in piping systems with cast iron flanges |
| C | Replaced by Specification F1554 Gr.36 |
| Bolt Grade | Nuts | Washers |
|---|---|---|
| Grade A | A 563A Hex | F844 |
| Grade A | A 563A Heavy Hex | F844 |
| Grade B | A 563A Heavy Hex | F844 |