Pocket hole screw size for 1" material
One-inch (a full 1", not nominal) is thicker than the everyday 3/4", so it takes a longer pocket screw to reach properly into the joining piece.
Here's the pocket-hole screw length for 1" material, and which thread to use for your wood.
Material thickness
Change the thickness to see other lengths — use the actual thickness of your stock.
Pocket screw for 1" material
Thread — coarse for softwood & plywood, fine for hardwood & MDF.
Get the gear
As an Amazon Associate, WhatDrillBit earns from qualifying purchases.
What 1" stock is for
You'll hit 1" stock on thick tabletops and desktops, workbench components, chunky face frames and aprons, and heavier shelving — places where the extra thickness adds stiffness and mass.
Because it's thicker, don't reach for the 3/4" screw out of habit; the longer length is what gives a 1" board a solid joint.
Using a Kreg jig?
Set the drill guide to your material thickness. For the exact depth mark on your specific jig, check Kreg’s official screw-selector chart — the settings vary by jig model.
Common questions
What length pocket hole screw for 1" material?
For 1" (25 mm) stock, use a 1½" (38 mm) pocket screw. Pocket-hole screw length is set by the thickness of the piece the pockets are drilled in.
Coarse or fine thread for 1" material?
Match the thread to the material: coarse-thread pocket screws for softwood and plywood, fine-thread for hardwood and MDF.
Do pocket hole screws need a pilot hole in 1" stock?
No — pocket screws are self-tapping, and the jig's stepped bit drills the pilot in the first board. Just set the jig and the drill-guide collar for 1" material.
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.