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Lag Screw
A screw designed for fastening to wood in heavy duty applications. They have coarse threads, a hex head, and a gimlet point.
Other Names: Lag Bolt
Dimensions
ASME B18.2.1
| Dia. | Thread | Hex | Head Height | Drill Bit |
|---|---|---|---|---|
| 10 | 11 | 9/32 | 1/8 | 7/64 |
| 1/4 | 10 | 7/16 | 11/64 | 7/32 |
| 5/16 | 9 | 1/2 | 7/32 | 1/4 |
| 3/8 | 7 | 9/16 | 1/4 | 15/64 |
| 1/2 | 6 | 3/4 | 11/32 | 5/16 |
| 5/8 | 5 | 15/16 | 27/64 | 13/32 |
| 3/4 | 4.5 | 1 1/8 | 1/2 | 1/2 |
| 7/8 | 4 | 1 5/16 | 37/64 | 39/64 |