Grommet and Eyelet Sizing Chart
Sizes for grommets are generally listed as a the measurement of the inside diameter (the hole). In the chart below we have provided exact measurements for inside diameter/outside diameter/depth. For size 12, we carry both size #12 and size #12L, both have same inside diameter but 12L is wider overall. We now carry size #15 grommets. See table below for dimensions.
| Size | Outside Diameter (in millimeters) | Inside Diameter (in millimeters) | Depth (in millimeters) |
| #00000 (1/16") | 3.5mm | 1.5mm | 4mm |
| #0000 (1/8") | 8.5mm | 3.2mm | 7mm |
| #000 (5/32") | 7.5mm | 4mm | 5mm |
| #00 (3/16") | 9mm | 4.5mm | 5mm |
| #0 (1/4") | 11.5mm | 6mm | 5.5mm |
| #1 (5/16") | 17.5mm | 7mm | 6mm |
| #2 (3/8") | 19mm | 9mm | 7mm |
| #3 (7/16") | 22mm | 12mm | 7mm |
| #4 (1/2") | 28mm | 15mm | 9mm |
| #5 (5/8") | 32mm | 17mm | 9mm |
| #6 (3/4") | 34mm | 18mm | 10mm |
| #8 (1-1/8") | 50mm | 30mm | 8mm |
| #10 (1-7/16") | 48mm | 35mm | 7mm |
| #12 (1-9/16") | 61.5mm | 41.5mm | 11mm |
| #12L | 72mm | 41.5mm | 9.5mm |
| #12 (SQR) | 62mm | 41.5mm | 11mm |
| #15 (2") | 75mm (3") | 50 mm (2") | 11mm |
