Steel shot sizes are a standardized system for categorizing the size of steel pellets used for various applications, such as in shot blasting or shotgun ammunition. The size of a steel shot is determined by its diameter, measured in millimeters or inches. The larger the steel shot size, the heavier and more powerful it is.
Many different steel shot sizes are available, and they are typically designated by a number or letter code. For example, the most common steel shot sizes for shotgun ammunition are #7, #8, and #9, which have diameters of .10, .09, and .08 inches, respectively.
For shot blasting applications, steel shot sizes can range from tiny beads as small as .020 inches in diameter to larger shot sizes such as 1/4 inch or larger. The appropriate steel shot size for a given application depends on various factors, including the surface to be blasted, the desired finish, and the equipment being used.
Overall, the selection of steel shot size is an important consideration for achieving the desired results in a variety of industrial and sporting applications.
| SAE Size No | Size (In) | Size (MM) |
| S780 | 0.0787 | 2.00 |
| S660 | 0.0661 | 1.70 |
| S550 | 0.0555 | 1.40 |
| S460 | 0.0469 | 1.18 |
| S390 | 0.0394 | 1.00 |
| S330 | 0.0331 | 0.085 |
| S280 | 0.0278 | 0.710 |
| S230 | 0.0234 | 0.600 |
| S170 | 0.0165 | 0.425 |
| S110 | 0.0117 | 0.300 |
| S70 | 0.0070 | 0.180 |