| Finished Bore | 1.250 in - 1 1/4 in |
| O.D. | 3.978 in |
| Set Screw Size | 5/16-18 UNC |
| Martin No. | 60BS15 |
| No. of Teeth | 15 |
| Keyway Size | 1/4 X 1/8 in |
| No. of Screws | 2 |
| Keyway | w/Keyway & Set Screw |
| Inch/Metric | Inch |
| Sprocket Style | B |
| Hub O.D. | 2.875 in |
| Length Through Bore | 1.25 in |
| Chain No. | 60 |
| Set Screw Location | (1) Over Keyway and (1) At 90° |
| Hub Dia. | 2 5/8 in |
| Width Across Teeth | 0.459 in |
| Outside Dia. [Min] | 3.9780 in |
| Outside Dia. | 3.9780 in |
| Pitch Diameter | 3.607 in |
| Pitch Dia. | 3.607 in |
| Caliper Diameter | 3.1185 in |
| Hub Projection | 0.8 in |
| Hub Length Thru | 0.791 in |
| Bore Type | Finished Bore |
| Pitch Diameter [Min] | 3.607 in |
| No. of Strands Across | 1 |
| Single Strand Tooth Thickness | 0.459 in |
| Chain Pitch | 0.750 in |
| Material | Steel |
| Hardened Teeth | Without Hardened Teeth |
| Weight | 1.7 LB |