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.
Table 5
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'')
Fig. 19
Fig. 20
Hexagonal
Inch
width across
Form
bolts
flats H
5/16'' (8 mm)
B
3/8'' (10 mm)
B
W5/16''
15/32'' (12 mm)
C
1/2'' (13 mm)
B
9/16'' (14 mm)
B
5/8'' (16 mm)
D
W3/8''
21/32'' (17 mm)
D
23/32'' (18 mm)
D
W7/16''
3/4'' (19 mm)
D
English
Main Socket
Dimensions
L
L1
L2
øF
2-3/8''
15/32''
1-7/8''
1/2''
(60 mm) (12 mm) (48 mm) (13 mm)
2-3/8''
15/32''
1-7/8''
5/8''
(60 mm) (12 mm) (48 mm) (16 mm)
2-3/8''
9/16''
1-7/8''
23/32''
(60 mm) (14 mm) (48 mm) (18.4 mm)
2-3/8''
9/16''
1-7/8''
3/4''
(60 mm) (14 mm) (48 mm) (18.9 mm)
2-3/8''
19/32''
1-7/8''
49/64''
(60 mm) (15 mm) (48 mm) (19.5 mm)
2-3/8''
19/32''
1-7/8''
15/16''
(60 mm) (15 mm) (48 mm) (24 mm)
2-3/8''
19/32''
1-7/8''
1''
(60 mm) (15 mm) (48 mm) (25 mm)
2-3/8''
5/8''
1-7/8''
1-1/32''
(60 mm) (16 mm) (48 mm) (26 mm)
2-3/8''
21/32''
1-7/8''
1-1/16''
(60 mm) (17 mm) (48 mm) (27.5 mm)
23