Hitachi WH 8D2 Instruction Manual And Safety Instructions page 15

Square head
Part Name
drive dimen-
sions S
8 mm
10 mm
12 mm
13 mm
3/8'' Long
14 mm
(9.5 mm) Socket
16 mm
17 mm
18 mm
19 mm
4. Extension bar: Code No. 996143
The extension bar is convenient for working in very restricted spaces or when the
socket provided connot reach the bolt to be tightened.
!
CAUTION:
When the extension bar is used the tightening torque is reduced slightly
compared with the ordinary socket. So it is necessary to operate the tool a little
longer to get the same torque.
5. Universal joint: Code No. 996147
The universal joint convenient for impacting nuts when there is an angle
between the socket and wrench, or when working in a very narrow space.
Suitable Bolt Diameter
Code No. ISO ISO
(ordinary) (small)
996134 M5 (3/16'')
996135 M6 (1/4'')
996136 M8 (5/16'')
996137 M8 (5/16'')
996138 M10 (3/8'')
996139 M10 (3/8'')
996140 M10 (3/8'') M12 (15/32'')
996141 M12 (15/32'')
996142 M12 (15/32'')
Table 3
Hexagonal
Inch
width across
bolts
flats H
5/16'' (8 mm)
3/8'' (10 mm)
W5/16'' 15/32'' (12 mm)
1/2'' (13 mm)
9/16'' (14 mm)
5/8'' (16 mm)
W3/8'' 21/32'' (17 mm)
23/32'' (18 mm)
W7/16'' 3/4'' (19 mm)
Fig. 5
Fig. 6
Main Socket
Dimensions
From
L L1 L2
2-3/8'' 15/32'' 1-7/8''
B
(60 mm) (12 mm) (48 mm) (13 mm)
2-3/8'' 15/32'' 1-7/8''
B
(60 mm) (12 mm) (48 mm) (16 mm)
2-3/8'' 9/16'' 1-7/8''
C
(60 mm) (14 mm) (48 mm) (18.4 mm)
2-3/8'' 9/16'' 1-7/8''
B
(60 mm) (14 mm) (48 mm) (18.9 mm)
2-3/8'' 19/32'' 1-7/8''
B
(60 mm) (15 mm) (48 mm) (19.5 mm)
2-3/8'' 19/32'' 1-7/8''
D
(60 mm) (15 mm) (48 mm) (24 mm)
2-3/8'' 19/32'' 1-7/8''
D
(60 mm) (15 mm) (48 mm) (25 mm)
2-3/8'' 5/8'' 1-7/8''
D
(60 mm) (16 mm) (48 mm) (26 mm)
2-3/8'' 21/32'' 1-7/8''
D
(60 mm) (17 mm) (48 mm) (27.5 mm)
F
1/2''
5/8''
23/32''
3/4''
49/64''
15/16''
1''
1-1/32''
1-1/16''
15