Kreg Jig K4 - Manual (Page 6)

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Choosing a Screw
Screw Selection / Kreg Jig ® Setting Chart
Material
Thickness
Screw
Length
Kreg Jig ®
Setting
1 ⁄ 2 ” (12 mm) 3 ⁄ 4 ” (19 mm) 1 ⁄ 2 ” Marking
5 ⁄ 8 ” (16 mm) 1” (25 mm) 5 ⁄ 8 ” Marking
3 ⁄ 4 ” (19 mm) 1 1 ⁄ 4 ” (32 mm) 3 ⁄ 4 ” Marking
7 ⁄ 8 ” (22 mm) 1 1 ⁄ 2 ” (38 mm) 7 ⁄ 8” Marking
1” (25 mm) 1 1 ⁄ 2 ” (38 mm) 1” Marking
1 1 ⁄ 8 ” (29 mm) 1 1 ⁄ 2 ” (38 mm) 1 1 ⁄ 8 ” Marking
1 1 ⁄ 4 ” (32 mm) 2” (51 mm) 1 1 ⁄ 4 ” Marking
1 3 ⁄ 8 ” (35 mm) 2” (51 mm) 1 3 ⁄ 8 ” Marking
1 1 ⁄ 2 ” (38 mm) 2 1 ⁄ 2 ” (64 mm) 1 1 ⁄ 2 ” Marking
*Note: Screw length is measured from bottom of
the head to the tip of the screw 1 1 ⁄ 4 ”
Kreg offers a complete line of specialized screws for every workpiece size
and type. Use this graph to fi nd the correct screw. All are available online,
at www.kregtool.com or at your local authorized Kreg dealer.
Choosing a Screw
Fine Thread
Fine thread screws are recommended for
hardwoods as they reduce the chance of the
material splitting when driven.
Coarse Thread
Due to a signifi cantly larger thread diameter,
coarse thread screws offer a much stronger hold
in composite materials such as MDF
and plywood.
Self-Tapping
Auger point
eliminates the
need to drill a
pilot hole.
Deep Square Drive
improves driver
engagement and
reduces the
possibility of
cam-out.
Use in woods such as:
• Ash • Oak • Maple • Walnut • Hickory • Cherry • Mahogany • Birch
Use in woods such as:
• Pine • Cedar • Basswood • Poplar • Plywood • Melamine• Particle Board