English
Square
head drive
Part Name
dimensions S
12 mm 955138
13 mm 955139
14 mm 955140
17 mm 955141
17 mm 955149
19 mm 955142
1/2"
Long
(12.7 mm) Socket
19 mm 955150
21 mm 955143
21 mm 955151
21 mm 991480
22 mm 955144
24 mm 955146
4. Extension bar: Code No. 873633
The extension bar is convenient for working in very restricted spaces or when the socket
provided cannot reach the bolt to be tightened.
CAUTION
When the extension bar is used, the tightening torque is reduced slightly compared
with the ordinary socket.
5. Universal joint: Code No. 992610
The universal joint is convenient for impacting nuts when there is an angle between
the socket and wrench, or when working in a very narrow space.
24
Suitable Bolt Diameter
Code
High
ISO
ISO
No.
tension (ordinary) (small)
M8
M10
M10
M12
M10
M12
M12
M14
M12
M14
M12
M14
M16
M16
M18
Table 5
Hexagonal
width across Form
Inch
flats H
bolts
15/32"
M8
W5/16"
(12 mm)
33/64"
(13 mm)
9/16"
(14 mm)
11/16"
W3/8"
(17 mm)
11/16"
W3/8"
(17 mm)
3/4"
W7/16"
(19 mm)
3/4"
W7/16"
(19 mm)
13/16"
W1/2"
(21 mm)
13/16"
W1/2"
(21 mm)
13/16"
W1/2"
(21 mm)
7/8"
(22 mm)
15/16"
(24 mm)
Fig. 21
Fig. 22
Main Socket
Dimensions
L
L1
2-3/64"
25/32"
1-11/32"
B
(52 mm) (20 mm) (34 mm) (20 mm)
2-3/64"
25/32"
1-11/32"
B
(52 mm) (20 mm) (34 mm) (21-5 mm)
2-3/64"
25/32"
1-11/32"
B
(52 mm) (20 mm) (34 mm) (22 mm)
2-3/64"
15/16"
1-11/32"
B
(52 mm) (24 mm) (34 mm) (25 mm)
2-15/16"
15/16"
2-1/4"
B
(75 mm) (24 mm) (57 mm) (25 mm)
2-3/64"
15/16"
1/11/32"
B
(52 mm) (24 mm) (34 mm) (28 mm)
2-15/16"
15/16"
2-1/4"
B
(75 mm) (24 mm) (57 mm) (28 mm)
2-3/64"
15/16"
1-11/32"
D
(52 mm) (24 mm) (34 mm) (31 mm)
2-15/16"
15/16"
2-1/4"
D
(75 mm) (24 mm) (57 mm) (31 mm)
4-15/16"
15/16"
4-7/32"
D
(125 mm) (24 mm) (107 mm) (31 mm)
2-3/64"
15/16"
1-11/32"
D
(52 mm) (24 mm) (34 mm) (32.5 mm)
2-3/64"
63/64"
1-11/32" 1-11/32"
D
(52 mm) (25 mm) (34 mm) (34 mm)
L2
øF
25/32"
53/64"
7/8"
1"
1"
1-3/32"
1-3/32"
1-7/32"
1-7/32"
1-7/32"
1-9/32"