English
2. Sockets
Form B
L1
H
L
Square
head drive
Part Name
dimensions S
10 mm
12 mm
13 mm
14 mm
17 mm
1/2"
Hexagonal
(12.7 mm)
Socket
19 mm
21 mm
22 mm
24 mm
26 mm
3. Long Socket
Form B
L1
H
L2
L
24
Form C
S
H
Suitable Bolt Diameter
Code No.
High
ISO
tension (ordinary) (small)
944291
M6
873632
873539
M8
873540
873536
M10
873624
M12
873626
873627
M12
M14
873629
M16
873630
Form C
S
H
L1
S
L
Table 4
Hexagonal
width across
ISO
Inch
flats H
bolts
25/64"
(10 mm)
15/32"
M8
W5/16"
(12 mm)
33/64"
(13 mm)
9/16"
M10
(14 mm)
11/16"
M12
W3/8"
(17 mm)
3/4"
M14
W7/16"
(19 mm)
13/16"
W1/2"
(21 mm)
7/8"
M16
(22 mm)
15/16"
M18
(24 mm)
1"
W5/8"
(26 mm)
L1
L2
S
L
Form D
L1
H
L
Main Socket
Dimensions
Form
L
L1
1-9/16"
5/16"
B
(40 mm)
(8 mm)
1-9/16"
5/16"
B
(40 mm)
(8 mm)
1-9/16"
11/32"
B
(40 mm)
(9 mm)
1-9/16"
11/32"
B
(40 mm)
(9 mm)
1-1/4"
5/16"
C
(32 mm)
(8 mm)
1-11/32"
11/32"
C
(34 mm)
(9 mm)
1-13/32"
3/8"
D
(36 mm) (10 mm) (32 mm)
1-9/16"
9/16"
D
(40 mm) (14 mm) (35 mm)
1-9/16"
9/16"
D
(40 mm) (15 mm) (38 mm)
1-9/16"
9/16"
D
(40 mm) (15 mm) (38 mm)
Form D
L1
H
L2
L
S
øF
11/16"
(18 mm)
25/32"
(20 mm)
1"
(25 mm)
1"
(25 mm)
1-3/32"
(28 mm)
1-3/32"
(28 mm)
1-1/4"
1-3/8"
1-1/2"
1-1/2"
S