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Accessories – Screwlocks
Features
Features
Screwlocks
• Screwlocks are designed to retain the same size mated connectors together or to secure the
connector to a rack/panel. Screwlocks may be used on plugs or sockets.
• Female screwlocks consists of one #4-40 hole in the top, two flat washers to accommodate
different panel thicknesses, one lockwasher, and one #4-40 nut. Military female screwlocks
include three flat washers.
• Male screwlocks consit of one #4-40 slotted screw and a spring tension clip. Different sizes
accommodate the various connector flange sizes and types of backshells or hoods (if
applicable).
• Two screwlocks are required per connector.
• Military screwlocks meet all rquirements of MIL-C-24308.
Materials
Commercial Screwlock Assemblies
• Male Screwlock Assembly: Clip and screw are steel with zinc plating and yellow chromate finish
– RoHS parts have clear chromate in place of yellow chromate.
• Female Screwlock Assembly: Washers (2), lockwashers, hex nuts, and nuts are steel with zinc
plating and yellow chromate finish. RoHS parts have clear chromate finish.
M24308 Military Screwlock Assemblies
• Male Screwlock Assembly: Clip and screw are steel with cadmium plating and yellow chromate
finish.
• Female Screwlock Assembly: Washers (3), lockwashers, hex nuts, and nuts are steel with
cadmium plating and yellow chromate finish.
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[3]
[1]
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Part Numbers
[2]
Part Numbers
Male Screwlocks – Ordering Information
Shell Size
Positions
COMMERCIAL
D20419-0
D20419-16
D20419-21
D20420-0
D20420-12
D20420-15
A
in
RoHS Version
D20419-40
D20419-46
N/A
N/A
D20420-42
N/A
0.250
0.250
0.281
0.250
0.281
0.281
6.35
6.35
7.13
6.35
7.13
7.13
0.033
0.048
0.059
0.033
0.048
0.059
mm
in
B
mm
0.84
1.22
1.50
0.84
1.22
E
9
A
15
B
25
C
37
D
50
P/S P/S S
S
S* S* P/S* P/S*
P* P*
S
P/S*
P*
http://www.cinch.com/products/d-subminiature/under-accessories-screwlocks-slide-locks... 12/14/2012
Cinch Connectors » Accessories – Screwlocks » Print
Page 2 of 2
MILITARY MIL-C-24308
M24308/25-9F
M24308/25-10F
Per MIL Spec
Per MIL Spec
P/S P/S P/S
P/S
P/S
Note: P=Plug, S=Socket
*Indicates used with Junction shell
Female Screwlocks – Ordering Information
Shell Size
Positions
COMMERCIAL
D20418-2
D20418-39
MILITARY MIL-C-24308
M24308/26-1F
M24308/26-2F
Per MIL Spec
Per MIL Spec
RoHS Version
D20418-42
N/A
0.312
0.628
in
A
mm
E
9
A
15
B
25
C
37
D
50
7.92
15.95
P/S
P/S
P/S
P/S
P/S
P/S
P/S
P/S
P/S
P/S
P/S
P/S
P/S
P/S
P/S
P/S
P/S
P/S
P/S
P/S
Note: P=Plug, S=Socket
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slide-locks
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