332
9 (.35)
8 (.31)
7.8
(.31)
9
(.35)
15 (.59)
Maximum
0.5 (.02)
7
(.28)
15
(.59)
2 (.08)
31.7
(1.25)
2 x Ø 3.05 (.12)
Counterbore both sides
Ø 5.1 (.20) 2 (.08) Deep
8 (.31)
3 (.12)
R
E
V
E
R
S
E
R
O
T
A
T
I
O
N
F
O
R
W
A
R
D
R
O
T
A
T
I
O
N
R
E
V
E
R
S
E
R
O
T
A
T
I
O
N
F
O
R
W
A
R
D
R
O
T
A
T
I
O
N
Symmetric Torque Versions
Part Number Static Torque (Forward and Reverse) N•m (in•lbf)
Type A Type B
ST-7A-30SA-33 ST-7A-30SB-33 0.34 (3)
ST-7A-40SA-33 ST-7A-40SB-33 0.45 (4)
ST-7A-50SA-33 ST-7A-50SB-33 0.56 (5)
Asymmetric Torque Versions
Part Number Static Torque N•m (in•lbf)
Type A Type B Forward N•m (in•lbf) Reverse Nm (inlbf)
ST-7A-40FA-33 ST-7A-40FB-33 0.45 (4) 0.27 (2.4)
ST-7A-50FA-33 ST-7A-50FB-33 0.56 (5) 0.37 (3)
ST-7A-60FA-33 ST-7A-60FB-33 0.68 (6) 0.41 (3.6)
ST-7A-40RA-33 ST-7A-40RB-33 0.27 (2.4) 0.45 (4)
ST-7A-50RA-33 ST-7A-50RB-33 0.34 (3) 0.56 (5)
ST-7A-60RA-33 ST-7A-60RB-33 0.41 (3.6) 0.68 (6)
9±0.1
(.354±.004)
4 x
Ø 3.1±0.1
(.122±.004)
16 (.63)
8±0.1
(.315±.004)
7.8±0.1(.307±.004)
9±0.1
(.354±.004)
Hinge centerline
Axial
Radial
ACTUAL SIZE
www.southco.com/ST Dimensions in millimeters (inch) unless otherwise stated
ST-7A Hinge
Position control · Constant torque
• Smooth, zero backlash
operation
• Space efficient design
provides high torque in
minimum space
• Constant torque, never
needs adjusting
Material and Finish
Zinc alloy and steel, natural
Performance Details
Radial load:
Maximum static load: 400 N (90 lbf)
Axial load:
Maximum static load: 300 N (67 lbf)
Cycle performance:
20,000 cycles within ±20% of
static torque specification
Installation Notes
1. Install hinge using No. 4 socket
head cap screw.
2. For proper function, assembly
must include (1) type A and (1)
type B hinge.
Type A Type B
Part Number
See table
Other options available. For complete details
on variety, part numbers, installation and
specification, go to
333
Symmetric Torque Versions
Part Number Static Torque (Forward and Reverse) N•m (in•lbf)
Type A Type B
ST-10A-80SA-33 ST-10A-80SB-33 0.90 (8)
ST-10A-120SA-33 ST-10A-120SB-33 1.36 (12)
ST-10A-160SA-33 ST-10A-160SB-33 1.81 (16)
ST-10A-200SA-33 ST-10A-200SB-33 2.26 (20)
Asymmetric Torque Versions
Part Number Static Torque N•m (in•lbf)
Type A Type B Forward N•m (in•lbf) Reverse Nm (inlbf)
ST-10A-120FA-33 ST-10A-120FB-33 1.36 (12) 0.81 (7.2)
ST-10A-160FA-33 ST-10A-160FB-33 1.81 (16) 1.08 (9.6)
ST-10A-200FA-33 ST-10A-200FB-33 2.26 (20) 1.36 (12)
ST-10A-120RA-33 ST-10A-120RB-33 0.81 (7.2) 1.34 (12)
ST-10A-160RA-33 ST-10A-160RB-33 1.08 (9.6) 1.84 (16)
ST-10A-200RA-33 ST-10A-200RB-33 1.36 (12) 2.26 (20)
ACTUAL SIZE
www.southco.com/ST
16 (.63)
25.4 (1.0)
4 x Ø 4.2 (.17) Through hole
Counterbore 2 x Ø 7.6 (.30) 5 (.20) deep
11
(.43)
10
(.39)
5.5
(0.22)
43.8
(1.72)
10
(.39)
L
4.7 (.19)
15.8 (.62)
13
(.57)
18 (.71)
15.9
(.63)
R
E
V
E
R
S
E
R
O
T
A
T
I
O
N
F
O
R
W
A
R
D
R
O
T
A
T
I
O
N
R
E
V
E
R
S
E
R
O
T
A
T
I
O
N
F
O
R
W
A
R
D
R
O
T
A
T
I
O
N
10 ± 0.1
(.394 ± .004)
4 x
Ø 4.2±.1
(.165±.004)
11 ± 0.1
(.433 ± .004)
13±0.1
(.512±.004)
15.8±0.1 (.622±.004)
16±0.1
(.630±.004)
Axial
Radial
Dimensions in millimeters (inch) unless otherwise stated
• Smooth, zero backlash
operation
• Space efficient design
provides high torque in
minimum space
• Constant torque, never
needs adjusting
Material and Finish
Zinc alloy and steel, natural
Performance Details
Radial load:
Maximum static load:
500 N (112 lbf)
Axial load:
Maximum static load:
1000 N (225 lbf)
Cycle performance:
20,000 cycles within ±20% of
static torque specification
Installation Notes
1. Install hinge using M4 (No.8)
socket head cap screw.
2. For proper function, assembly
must include(1) type A and (1)
type B hinge.
ST-10A Hinge
Position control · Constant torque
Type A Type B
Part Number
See table
Other options available. For complete details
on variety, part numbers, installation and
specification, go to
334
Symmetric Torque Versions
Part Number Static Torque (Forward and Reverse) N•m (in•lbf)
Type A Type B
ST-10E-120SE-33 ST-10E-120SG-33 1.35 (12)
ST-10E-200SE-33 ST-10E-200SG-33 2.26 (20)
ST-10E-280SE-33 ST-10E-280SG-33 3.16 (28)
ST-10E-360SE-33 ST-10E-360SG-33 4.06 (36)
Asymmetric Torque Versions
Part Number Static Torque Nm (inlbf)
Type A Type B Forward N•m (in•lbf) Reverse Nm (inlbf)
ST-10E-200FE-33 ST-10E-200FG-33 2.26 (20) 1.35 (12)
ST-10E-280FE-33 ST-10E-280FG-33 3.16 (28) 2.26 (20)
ST-10E-360FE-33 ST-10E-360FG-33 4.06 (36) 2.44 (21.6)
ST-10E-440FE-33 ST-10E-440FG-33 4.97 (44) 2.93 (26)
ST-10E-200RE-33 ST-10E-200RG-33 1.35 (12) 2.26 (20)
ST-10E-280RE-33 ST-10E-280RG-33 2.26 (20) 3.16 (28)
ST-10E-360RE-33 ST-10E-360RG-33 2.44 (21.6) 4.06 (36)
ST-10E-440RE-33 ST-10E-440RG-33 2.93 (26) 4.97 (44)
2 x Ø 4.2±0.1
(.165±.004)
25.4±0.1
(1.00±.004)
19.1±0.1
(.75±.004)
30.1±0.15
(1.18±.006)
25.4±0.1
(1.00±.004)
2 x Ø 4.2±0.1
(.165±.004)
ACTUAL SIZE
www.southco.com/ST Dimensions in millimeters (inch) unless otherwise stated
ST-10E Hinge
Position control · Constant torque
69.35 (2.73)
6 (.24)
4 (.16)
12.7
(.50)
18
(.71)
2 x
Ø 4.45 (.18) 25.4
(1.00)
12.7
(.50)
30.1
(1.19)
90º
19 (.75)
12.7
(.50)
57.4
(2.26)
7 (.28)
R
E
V
E
R
S
E
R
O
T
A
T
I
O
N
F
O
R
W
A
R
D
R
O
T
A
T
I
O
N
R
E
V
E
R
S
E
R
O
T
A
T
I
O
N
F
O
R
W
A
R
D
R
O
T
A
T
I
O
N
• Smooth, zero backlash
operation
• Space efficient design
provides high torque in
minimum space
• Constant torque, never
needs adjusting
Material and Finish
Zinc alloy and steel, natural
Performance Details
Cycle performance:
20,000 cycles within ±20% of
static torque specification
Installation Notes
1. Install hinge using M4 (No.8)
socket head cap screw.
2. For proper function, assembly
must include(1) type A and (1)
type B hinge.
Part Number
See table
Type A Type B
Other options available. For complete details
on variety, part numbers, installation and
specification, go to
335
Symmetric Torque Versions
Part Number Static Torque (Forward and Reverse) N•m (in•lbf)
ST-10E-120SH-33 1.35 (12)
ST-10E-200SH-33 2.26 (20)
ST-10E-280SH-33 3.16 (28)
ST-10E-360SH-33 4.06 (36)
Asymmetric Torque Versions
Part Number Static Torque Nm (inlbf)
Forward N•m (in•lbf) Reverse Nm (inlbf)
ST-10E-200FH-33 2.26 (20) 1.35 (12)
ST-10E-280FH-33 3.16 (28) 1.89 (16.8)
ST-10E-360FH-33 4.06 (36) 2.44 (21.6)
ST-10E-440FH-33 4.97 (44) 2.93 (26)
ST-10E-200RH-33 1.35 (12) 2.26 (20)
ST-10E-280RH-33 1.89 (16.8) 3.16 (28)
ST-10E-360RH-33 2.44 (21.6) 4.06 (36)
ST-10E-440RH-33 2.93 (26) 4.97 (44)
ACTUAL SIZE
www.southco.com/ST
Dimensions in millimeters (inch) unless otherwise stated
ST-10E Hinge
Position control · Constant torque
Ø 9.65 (.38)
9.53 (.375) 25.4
(1.00)
88.9 (3.50)
31.75
(1.25)
6 x Ø 4.45 (.175)
12.7 (.50) Ø 14 (.55) 18 (.71)
6 x Ø 4.2±0.1 (.16±.004)
2 x 9.53±0.1
(.375±.004)
25.4±0.1
(1.00±.004)
89.9±.13
(3.50±.012)
12.7±0.1
(.50±.004)
22.72±0.1
(.894±.004)
4.46 (.175)
5.08 (.200)
R
E
V
E
R
S
E
R
O
T
A
T
I
O
N
F
O
R
W
A
R
D
R
O
T
A
T
I
O
N
Ø 9.65 (.38)
9.53 (.375) 25.4
(1.00)
88.9 (3.50)
31.75
(1.25)
6 x Ø 4.45 (.175)
12.7 (.50) Ø 14 (.55) 18 (.71)
6 x Ø 4.2±0.1 (.16±.004)
2 x 9.53±0.1
(.375±.004)
25.4±0.1
(1.00±.004)
89.9±.13
(3.50±.012)
12.7±0.1
(.50±.004)
22.72±0.1
(.894±.004)
4.46 (.175)
5.08 (.200)
R
E
V
E
R
S
E
R
O
T
A
T
I
O
N
F
O
R
W
A
R
D
R
O
T
A
T
I
O
N
• Smooth, zero backlash
operation
• Space efficient design
provides high torque in
minimum space
• Constant torque, never
needs adjusting
Material and Finish
Zinc alloy and steel, natural
Performance Details
Cycle performance:
20,000 cycles within ±20% of
static torque specification
Installation Notes
Install hinge using M4 (No.8) socket
head cap screw
Part Number
See table
Other options available. For complete details
on variety, part numbers, installation and
specification, go to
336
9.53 (.375)
12.7
(.50)
23.3 (.914)
25.4
(1.00) 4 x Ø 4.45 (.175)
4 x Ø 4.2±0.1
(.165±.004)
25.4±0.1
(1.00±.004)
9.53±0.1
(.375±.004)
12.7±0.1
(.50±.004)
23.2±0.1
(.914±.004)
Ø 14 (.55) 18 (.71)
4.46 (.175)
5.08 (.200)
76.9 (3.03)
R
E
V
E
R
S
E
R
O
T
A
T
I
O
N
F
O
R
W
A
R
D
R
O
T
A
T
I
O
N
R
E
V
E
R
S
E
R
O
T
A
T
I
O
N
F
O
R
W
A
R
D
R
O
T
A
T
I
O
N
9.53 (.375)
12.7
(.50)
23.3 (.914)
25.4
(1.00) 4 x Ø 4.45 (.175)
4 x Ø 4.2±0.1
(.165±.004)
25.4±0.1
(1.00±.004)
9.53±0.1
(.375±.004)
12.7±0.1
(.50±.004)
23.2±0.1
(.914±.004)
Ø 14 (.55) 18 (.71)
4.46 (.175)
5.08 (.200)
76.9 (3.03)
R
E
V
E
R
S
E
R
O
T
A
T
I
O
N
F
O
R
W
A
R
D
R
O
T
A
T
I
O
N
R
E
V
E
R
S
E
R
O
T
A
T
I
O
N
F
O
R
W
A
R
D
R
O
T
A
T
I
O
N
Symmetric Torque Versions
Part Number Static Torque (Forward and Reverse) N•m (in•lbf)
Type A Type B
ST-10E-120SJ-33 ST-10E-120SK-33 1.35 (12)
ST-10E-200SJ-33 ST-10E-200SK-33 2.26 (20)
ST-10E-280SJ-33 ST-10E-280SK-33 3.16 (28)
ST-10E-360SJ-33 ST-10E-360SK-33 4.06 (36)
Asymmetric Torque Versions
Part Number Static Torque N•m (in•lbf)
Type A Type B Forward N•m (in•lbf) Reverse Nm (inlbf)
ST-10E-200FJ-33 ST-10E-200FK-33 2.26 (20) 1.35 (12)
ST-10E-280FJ-33 ST-10E-280FK-33 3.16 (28) 1.89 (16.8)
ST-10E-360FJ-33 ST-10E-360FK-33 4.06 (36) 2.44 (21.6)
ST-10E-440FJ-33 ST-10E-440FK-33 4.97 (44) 2.93 (26)
ST-10E-200RJ-33 ST-10E-200RK-33 1.35 (12) 2.26 (20)
ST-10E-280RJ-33 ST-10E-280RK-33 1.89 (16.8) 3.16 (28)
ST-10E-360RJ-33 ST-10E-360RK-33 2.44 (21.6) 4.06 (36)
ST-10E-440RJ-33 ST-10E-440RK-33 2.93 (26) 4.97 (44)
Type A Type B
ACTUAL SIZE
www.southco.com/ST Dimensions in millimeters (inch) unless otherwise stated
ST-10E Hinge
Position control · Constant torque
Part Number
See table
• Smooth, zero backlash
operation
• Space efficient design
provides high torque in
minimum space
• Constant torque, never
needs adjusting
Material and Finish
Zinc alloy and steel, natural
Performance Details
Cycle performance:
20,000 cycles within ±20% of
static torque specification
Installation Notes
1. Install hinge using M4 (No. 8
socket head cap screw.
2. For proper function, assembly
must include (1) type A and (1)
type B hinge.
Other options available. For complete details
on variety, part numbers, installation and
specification, go to
337
Symmetric Torque Versions
Part Number Static Torque
(Forward and
Reverse)
Nm (inlbf)
Type A Type B
ST-12A-120SA-33 ST-12A-120SB-33 1.4 (12)
ST-12A-200SA-33 ST-12A-200SB-33 2.3 (20)
ST-12A-280SA-33 ST-12A-280SB-33 3.2 (28)
ST-12A-360SA-33 ST-12A-360SB-33 4.1 (36)
Asymmetric Torque Versions
Part Number Static Torque Nm (inlbf)
Type A Type B Forward N•m (in•lbf) Reverse Nm (inlbf)
ST-12A-200FA-33 ST-12A-200FB-33 2.3 (20) 1.5 (13.6)
ST-12A-280FA-33 ST-12A-280FB-33 3.2 (28) 2.2 (19.1)
ST-12A-360FA-33 ST-12A-360FB-33 4.1 (36) 2.8 (24.6)
ST-12A-440FA-33 ST-12A-440FB-33 5 (44) 3.4 (30)
ST-12A-200RA-33 ST-12A-200RB-33 1.5 (13.6) 2.3 (20)
ST-12A-280RA-33 ST-12A-280RB-33 2.2 (19.1) 3.2 (28)
ST-12A-360RA-33 ST-12A-360RB-33 2.8 (24.6) 4.1 (36)
ST-12A-440RA-33 ST-12A-440RB-33 3.4 (30) 5 (44)
ACTUAL SIZE
www.southco.com/ST
16 (.63)
25.4
(1.0)
2 x
Ø 4.2 (.17)
Counterbore both sides
Ø 8 (.31) 4.2 (.17) deep
12
(.47)
12
(.47) 5 (.20)
50.9
(2.0)
12.7
(.50)
4.7 (.19)
11.1 (.44)
2 x Ø 4.2
(.17)
15 (.59)
R
E
V
E
R
S
E
R
O
T
A
T
I
O
N
F
O
R
W
A
R
D
R
O
T
A
T
I
O
N
R
E
V
E
R
S
E
R
O
T
A
T
I
O
N
F
O
R
W
A
R
D
R
O
T
A
T
I
O
N
12±0.1
(.472±.004)
4 x
Ø 4.2±0.1
(.165±.004)
27 (1.06)
15±0.1
(.591±.004)
11.05±0.1 (.435±.004)
16±0.1
(.630±.004)
Hinge centerline
Axial
Radial
Type A Type B
Dimensions in millimeters (inch) unless otherwise stated
ST-12A Hinge
Position control · Constant torque
• Smooth, zero backlash
operation
• Space efficient design
provides high torque in
minimum space
• Constant torque, never
needs adjusting
Material and Finish
Zinc alloy and steel, natural
Performance Details
Radial load:
Maximum static load:
1000 N (225 lbf)
Axial load:
Maximum static load:
1200 N (270 lbf)
Cycle performance:
20,000 cycles within ±20% of
static torque specification
Installation Notes
1. Install hinge using M4 (No. 8)
socket head cap screw.
2. For proper function, assembly
must include (1) type A and (1)
type B hinge.
Part Number
See table
Other options available. For complete details
on variety, part numbers, installation and
specification, go to
339
ACTUAL SIZE
www.southco.com/ST
Dimensions in millimeters (inch) unless otherwise stated
• Smooth consistent
operation
• Extremely compact, fits
the smallest applications
• Never requires adjustment
Material and Finish
Aluminum, zinc alloy and steel,
natural
Performance Details
Radial load:
Maximum static load: 200 N (45 lbf)
Cycle performance:
20,000 cycles within 0.023 Nm
(.2 inlbf) of static torque
specification
ST-4A Hinge
Position control · Constant torque
1.5
(.06)
5.5 (.22)
Ø 4
(.16)
7
(.28)
3.5
(.14)
3.5
(.14)
Part Number Static Torque
ST-4A-3S-33 0.034 Nm (.3 inlbf)
1.47±0.01
(.058 ±.0004)
5.5 (.22)
Minimum
6.35
(0.25)
Ø 4.0±0.01
(.157±.0004)
3.7±0.1
(.146±.004)
2 x R 0.4 (.02)
3.5
(.137)
3.5
(.137)
Radial
Part Number
See table
Other options available. For complete details
on variety, part numbers, installation and
specification, go to
339A
11.8
(.46)
7.5
(.30)
Ø 5.5
(.22)
6.8
(.27)
4
(.16)
2.3
(.09)
4.5
(.18)
Hinge center
of rotation
4.25±0.1
(.167±.004)
0.45
(.018)
Ø 5.5±0.01
(.217±.0004)
2.27±0.01
(.089±.0004)
8
(.315)
2X R 1.2±0.1
(.047±.004)
7.4
(.291)
4.15
(.163)
Hinge center
of rotation
Max.
Max.
ACTUAL SIZE
ACTUAL SIZE
Min.
www.southco.com/ST Dimensions in millimeters (inch) unless otherwise stated
ST-5A Hinge
Position control · Constant torque
• Smooth consistent
operation
• Compact design fits
the smallest applications
• Never requires adjustment
Material and Finish
Aluminum, zinc alloy and steel,
natural
Performance Details
Radial load:
Maximum static load:
223 N (50 lbf)
Cycle performance:
20,000 cycles within ±20% of
static torque specification
Part Number
See table
Part Number Static Torque Nm (inlbf)
ST-5A-10S-33 0.113 (1.0)
ST-5A-16S-33 0.181 (1.6)
ST-5A-23S-33 0.260 (2.3)
ST-5A-30S-33 0.339 (3.0)
