What size hole should I drill for a #8 screw?
Wood Screw Pilot Hole Sizes
| Screw Size | Hard Wood | Soft Wood |
|---|---|---|
| Tapered Bit | Straight Bit | |
| #7 | 5/32″ | 3/32″ |
| #8 | 11/64″ | 7/64″ |
| #9 | 3/16″ | 1/8″ |
What is the clearance hole drill size for #8 32 fasteners?
Tap and Clearance Drill Sizes
| Screw | O.D. | |
|---|---|---|
| 4-40 | 0.1120 | 0.1160 |
| 5-40 | 0.125 | 0.1360 |
| 6-32 | 0.1380 | 0.1440 |
| 8-32 | 0.1640 | 0.1695 |
What are #8 screws?
American Screw Sizes
| THREAD DIAMETER | ||
|---|---|---|
| Size | Nearest Fraction | Inch |
| #6 | 9/64 | 0.13 |
| #8 | 5/32 | 0.16 |
| #10 | 3/16 | 0.19 |
How big should my pilot hole be?
As a general rule, a pilot hole should be the same diameter as the neck of the screw. A common mistake woodworkers make is drilling the pilot hole too small, thinking that the screw will hold better in a tighter space. However, that’s not necessarily the case.
How big should a pilot hole be?
As a general rule, a pilot hole should be the same diameter as the neck of the screw. A common mistake woodworkers make is drilling the pilot hole too small, thinking that the screw will hold better in a tighter space.
How big should a clearance hole be?
CLEARANCE HOLE CHART
| Clearance Hole Chart for Inch Fasteners | ||
|---|---|---|
| Nominal Screw Size | Fit Class – Normal | |
| 5/16 | 11/32 | 0.354 |
| 3/8 | 13/32 | 0.416 |
| 7/16 | 15/32 | 0.479 |
What diameter is a No 8 wood screw?
Wood Screw Diameters
| Size | Major Thread Diameter* | |
|---|---|---|
| Decimal | Nearest Fractional Measurement | |
| #6 | .138″ | 9/64″ |
| #7 | .151″ | 5/32″ |
| #8 | .164″ | 5/32″ |
How do I know what size hole to drill for a screw?
As a general rule:
- If you are creating a pilot hole for a nail, the right drill bit is slightly smaller than the nail’s shank.
- If you are creating a pilot hole for a screw, the drill bit should be the same size as the body of the screw—not including the threads.
How do you know what size hole to drill?
“You want a drill bit that’s big enough to drill a hole in the wall, and easy to push the anchor in with your thumb,” Donahue explains. “You don’t want to have to force it in there. The drill bit should be the same size as the body of the anchor you’re using.”