American Unified Thread Specifications
3/4 - 10 - UNC - 2A
- 3/4 — Nominal diameter in inches
- 10 — Threads per inch
- UNC — Thread series:
- UNC = Unified Coarse
- UNF = Unified Fine
- 2 — Class of fit (optional)
- A — Thread type (optional):
- A = External
- B = Internal