Fine thread, Coarse thread, Choosing a screw – Kreg Jig R3 User Manual
Page 6: Screw selection / kreg jig, Setting chart, Material thickness screw length kreg jig, Setting

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Choosing a Screw
Choosing a Screw
*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.kregjig.com or at
your local authorized Kreg dealer.
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
Screw Selection / Kreg Jig
®
Setting Chart
Material
Thickness
Screw
Length
Kreg Jig
®
Setting
1
⁄
2
” (12 mm)
1” (25 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