Hitachi NC 40G Handling Instructions Manual page 11

Appropriate nail length
The appropriate nail intrusion length to be drive into concrete is 12 mm – 22 mm (.472" – .866") for nailing
wooden materials, and 15 mm – 20 mm (.570" – .787") for nailing thin steel sheet.
Longer nails results in the nails bending.
Select the appropriate length for the materials according to the following table.
Purpose
To nail wood to concrete
To nail thin steel to concrete
Type of nail
L
d × L
2.6 mm × 30 mm
(.102" × 1-3/16")
Wood
2.6 mm × 35 mm
(.102" × 1-3/8")
2.6 mm × 40 mm
(.102" × 1-9/16")
Choose nail to secure approx. 15 mm – 20 mm (.590" - 787")
intrusion depth.
Example
thickness
10 mm (.393") 30 mm (1-3/16")
15 mm (.590")
20 mm (.787") 40 mm (1-9/16")
2.6 mm × 15 mm
(.102" × 19/32")
Thin steel sheet
2.6 mm × 20 mm
(.102" × 25/32")
2.6 mm × 25 mm
(.102" × 1")
Choose nail to secure approx. 12 mm – 20 mm (.472" – .866")
intrusion depth.
Nail length
Approx. 8 mm (.315") countersink.
Concrete
Wood Appropriate
nail length
35 mm (1-3/8")
Concrete
English
Intrusion depth into
concrete
Intrusion depth
into concrete
Approx. 20 mm (.787")
Approx. 20 mm (.787")
Approx. 20 mm (.787")
Intrusion depth into
concrete
10