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2. Nail Selection
The Model NV 65HMC utilizes common wire-collated and sheet-collated nail coils of 200 to 400 round-head
nails. Applicable nail dimensions are shown below. However, genuine HITACHI nail coils should be used to
assure satisfactory nailing quality.
CAUTION: Ensure that nails are as specified in Fig. 1. Using other nails will cause nail jams and
consequent nailer damage.
Fig. 1 • Dimensions of nails
Wire-collated coil nails
Min.
4.8 mm
(0.189")
2.1 mm
(0.083")
3. Nail Punching Force
Fig. 2 shows by type of wood and nail the nailer output energy provided by the supply pressure, and the
nailing energy required for punching nails flush. Air pressure exceeding the intersecting point between
nailer output energy and the required nailing energy for punching nails ensures fully punched nails.
For example, when punching a nail measuring 3.1 mm in dia. x 65 mm in length (0.122" x 2-1/2") into a
workpiece of hemlock with the Model NV 65HMC, pressure of about 14.7 bar (15 kgf/cm
the nailer to punch the nail flush with the wood surface. Any higher pressure causes the nail head to sink
below the wood surface.
Fig. 2 should be used only as a reference because the values indicated vary depending on the type of
wood, moisture content, and grain of wood.
Max.
7.3 mm
(0.287")
3.3 mm
(0.131")
-4-
Sheet-collated coil nails
Min.
5 mm
(0.197")
2.2 mm
(0.088")
Max.
7 mm
(0.276")
2.8 mm
(0.109")
2
, 210 psi) enables
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