Thread prep
5/16-18 Tap Drill
Tap drill and clearance reference for 5/16-18.
75% thread engagementUNC standard
Tap drillF
Decimal0.257 in / 6.53 mm
| Fit type | Clearance hole |
|---|---|
| Close fit | 0.323 in |
| Normal fit | 0.332 in |
| Loose fit | 0.344 in |
Thread prep
Tap drill and clearance reference for 5/16-18.
| Fit type | Clearance hole |
|---|---|
| Close fit | 0.323 in |
| Normal fit | 0.332 in |
| Loose fit | 0.344 in |