#10-32 UNF Thread Specifications
Complete dimensions for #10-32 UNF (Unified National Fine) thread per ASME B1.1. TPI: 32, Pitch: 0.03125" (0.794 mm).
Thread Dimensions
| Designation | #10-32 UNF |
| Threads Per Inch (TPI) | 32 |
| Pitch | 0.03125" (0.794 mm) |
| Major Diameter | 0.19" (4.826 mm) |
| Pitch Diameter | 0.1697" (4.31 mm) |
| Minor Diameter (External) | 0.1517" (3.852 mm) |
| Minor Diameter (Internal) | 0.1562" (3.967 mm) |
| Thread Depth | 0.01691" (0.43 mm) |
| Tensile Stress Area | 0.01999 in² (12.9 mm²) |
Tap Drill Size
Recommended tap drill: 5/32" (0.1562" / 3.97 mm)
Calculated minor diameter (internal): 0.1562" (3.97 mm)
Proof Loads by SAE Grade
| Grade | Proof Stress (psi) | Tensile Strength (psi) | Proof Load (lbf) | Tensile Load (lbf) |
|---|---|---|---|---|
| Grade 2 | 55,000 | 74,000 | 1,099 | 1,479 |
| Grade 5 | 85,000 | 120,000 | 1,699 | 2,399 |
| Grade 8 | 120,000 | 150,000 | 2,399 | 2,998 |
Same Size, Different Series
Common Applications
- Electronics
- Instrument screws
- Precision assemblies
- Avionics