0-17
PRECOATED BOLTS
1. Do not replace or restore a precoated bolt as it is in the
following cases:
(1) After it has been removed.
(2) When it has been moved by tightness check, etc.
(loosened or tightened)
NOTE:
For torque check, tighten the bolt at the lower limit of the
allowable tightening torque range; if the bolt moves,
retighten it according to the steps below.
2. How to reuse precoated bolts
(1) Wash the bolt and threaded hole.
(The threaded hole must be washed even when
replacing the bolt with a new one)
(2) Completely dry the washed parts by blowing with air.
(3) Apply a specified seal lock agent to the threaded
portion of the bolt.
HIGH PRESSURE HOSE FITTING TIGHTENING TORQUE
1. When connecting a high pressure hose, wipe the hose fitting and corresponding nipple contact
surfaces with a clean cloth to remove foreign matter and dirt. Also check that there are no dents or
other damage on the contact surfaces before installation.
2. When connecting the high pressure hose, hold the hose to align the fitting with the nipple and tighten
the fitting.
3. The maximum tightening torque must not exceed twice the standard tightening torque.
Seal lock agent
Nominal diameter
of screw
Tightening torque standard N·m (kgf·cm) [ft·lbf] Inside diameter
of hose
mm (in)
Standard Tightening range
7/16-20UNF 25 (50) [18.1] 24 to 26 (240 to 270) [17.4 to 19.5] 6 (0.24)
9/16-18UNF 49 (500) [36.2] 47 to 52 (480 to 530) [34.7 to 38.3] 9 (0.35)
3/4-16UNF 59 (600) [43.4] 56 to 62 (570 to 630) [41.2 to 45.6] 12 (0.47)
7/8-14UNF 59 (600) [43.4] 56 to 62 (570 to 630) [41.2 to 45.6] 12 (0.47)
7/8-14UNF 78 (800) [57.9] 74 to 82 (740 to 840) [53.5 to 60.8] 15 (0.59)
1•1/16-12UNF 118 (1200) [86.8] 112 to 123 (1140 to 1250) [82.5 to 90.4] 19 (0.75)
1•5/16-12UNF 137 (1400) [101.3] 130 to 144 (1330 to 1470) [96.2 to 106.4] 25 (0.98)
PF1/4 25 (250) [18.1] 24 to 26 (240 to 270) [17.4 to 19.5] 6 (0.24)
PF3/8 49 (500) [36.2] 47 to 52 (480 to 530) [34.7 to 38.3] 9 (0.35)
PF1/2 59 (600) [43.4] 56 to 62 (570 to 630) [41.2 to 45.6] 12 (0.47)
PF3/4 118 (1200) [86.8] 112 to 123 (1140 to 1250) [82.5 to 90.4] 19 (0.75)
PF1 137 (1400) [101.3] 130 to 144 (1330 to 1470) [96.2 to 106.4] 25 (0.98)