Pocket hole screw size chart
Pocket-hole screw length for every common material thickness, ½" through 1½", with the coarse/fine thread rule. Inches and millimetres.
| Material thickness | Pocket screw length |
|---|---|
| ½"12 mm | ¾"19 mm |
| ⅝"16 mm | 1"25 mm |
| ¾"19 mm | 1¼"32 mm |
| ⅞"22 mm | 1½"38 mm |
| 1"25 mm | 1½"38 mm |
| 1⅛"29 mm | 1½"38 mm |
| 1¼"32 mm | 2"51 mm |
| 1⅜"35 mm | 2"51 mm |
| 1½"38 mm | 2½"64 mm |
Thread: Softwood / Plywood — coarse · Hardwood / MDF — fine. Match the thread to the material the screw drives into. Use the actual thickness of your stock, not the nominal size.
How to read it
Find your material thickness on the left; the right column is the pocket-screw length to use. Then pick the thread from the note under the table — coarse for softwood and plywood, fine for hardwood and MDF.
Using a Kreg jig?
The lengths and thread guidance above are general pocket-hole practice, and ours to publish. The jig depth setting, though, is specific to Kreg’s own jigs — set the drill guide to your material thickness and check Kreg’s official screw-selector chart for the exact mark for your model. We don’t reproduce their proprietary jig-setting column as our own data.
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These are general guidance sizes cross-referenced from common woodworking sources. For structural, load-bearing, or manufacturer-specific work, follow the fastener manufacturer’s or an engineer’s specifications.