MS27508E18F35AA Conesys, MS27508E18F35AA Datasheet

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MS27508E18F35AA

Manufacturer Part Number
MS27508E18F35AA
Description
Conn MIL-DTL-38999 Circular PIN 66 POS Crimp ST Box Mount 66 Terminal 1 Port
Manufacturer
Conesys
Type
MIL-DTL-38999 Circularr
Datasheet

Specifications of MS27508E18F35AA

Gender
RCP
Termination Method
Crimp
Mounting
Box Mount
Body Orientation
Straight
Features and Application
MIL-DTL-38999 Series II connectors feature a bayonet
coupling mechanism with lower profile design and
rear-removable crimp contact retention system.
These connectors were designed for military and commercial
applications where the prime requirements are lower profile
and lighter weight.
Reduction of both size and weight were achieved through
the use of thinner shell walls and length restrictions. These
design restrictions reduced the RFI attenuation characteristics
and the “scoop” protection, while yielding an excellent gen-
eral purpose, lightweight connector. Compared to Series I,
Series II connectors achieve up to 20% reduction in mated
pair length, up to 39% reduction in outside diameter and
up to 40% reduction in weight (128 pin mated pair).
This family of connectors is offered in six receptacle-mounting
styles. They include square flange receptacles, for both front
and rear panel (wall) mounting; square flange receptacles,
for both front and rear panel (box) mounting; square flange
receptacle with extended grommet, for front of panel (box)
mounting; and jam nut receptacles which incorporate
“O” ring seals, designed for rear panel “D” hole mounting.
Plugs are available in two designs, with and without RFI
grounding.
Fifty-two insert arrangement per MIL-STD-1560 are tooled
and qualified to MIL-DTL-38999 Series II, utilizing 3 to 128
M39029 contacts. Contacts come in sizes 22D, 22M, 22, 20,
16 and 12, terminating wire sizes from 28 to 12 gauge.
These connectors are available in wide range of shell materials
and finishes. Aluminum shells are offered in electroless
nickel, bright cadmium, anodized, and olive drab cadmium.
Other finishes such as zinc cobalt are available upon request
to commercial callouts only. In addition, we offer passivated
stainless steel shells with standard environment-resisting
inserts (commercial callouts only).
Universal I/R Tool –
for both insertion and removal of contacts.
www.conesys.com
www.conesys.com
MIL-DTL-38999
Features and Application
Series II
A single, expendable plastic tool is used
20
Closed-Entry Socket Insert –
has lead-in chamfers for positive alignment of pins (even
partially bent within pre-established limits) with sockets.
Interfacial Pin Insert Seal –
around each pin, which mate into lead-in chamfers of hard
face socket insert, provide individual contact sealing.
Interfacial seal is never touched by service tools.
Elastomer Wire Sealing Grommet –
range of wire diameters is assured by a triple wire seal in
each cavity at the rear of the connector.
Superior Contact Stability –
system features a stamped beryllium-copper retaining clip
captivated by molded-in shoulders of each contact cavity in
the insulator. A rear-inserted M81969 plastic tool expands
the tines beyond the shoulder, releasing the contact.
Shell Polarization –
cross mating of adjacent connectors having same insert
arrangement.
Alternate key/keyway positions prevent
Raised moisture barriers
Rear release crimp contact
Hard dielectric socket face
Sealing over a wide
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MS27508E18F35AA Summary of contents

Page 1

... Universal I/R Tool – A single, expendable plastic tool is used for both insertion and removal of contacts. www.conesys.com www.conesys.com Closed-Entry Socket Insert – Hard dielectric socket face has lead-in chamfers for positive alignment of pins (even partially bent within pre-established limits) with sockets. ...

Page 2

... I 600 II 900 Note: The establishment of electrical safety factors is left entirely to the designer the best position to know www.conesys.com Performance Specifications Shell-to-Shell Conductivity Maximum potential drop shall not exceed: With RFI spring fingers, finish F = 1.0 millivolt, while G finishes A and B = 2.5 millivolts. Without spring fingers = 200 millivolts. ...

Page 3

... One spare contact for inserts requiring 2 through 26 of each contact and two spares for inserts with 27 or more contacts, and a minimum of one sealing plug up to 10% of the number contacts. One insertion/extraction tool for each contact size is also included. www.conesys.com MS 27473 T 12 ...

Page 4

... Front, Wall Mounting Receptacle .322(8.18) .317(8.05) E BLUE COLOR BAND +.25 Accessory -.13 Maximum ±.003 ±.08 Thread mm inch mm inch mm UNEF-2A 3.05 .932 23 ...

Page 5

... E MAX BLUE COLOR BAND Note: See page 33 for panel thickness +.25 Accessory -.13 Maximum Maximum Thread mm inch mm inch mm UNEF-2A 3.05 ...

Page 6

... Front, Box Mounting Receptacle A MAX .322(8.18) .317(8.05 BLUE COLOR BAND C E +.010 +.25 -.005 -.13 ±.003 mm inch mm inch 15.09 .120 3.05 .471 18.26 ...

Page 7

... A .447(11.35) MAX .442(11.23) B .322(8.18) .317(8.05 MAX BLUE COLOR BAND Note: See page 33 for panel thickness +.010 +.25 -.005 -.13 ±.003 mm inch mm inch 15 ...

Page 8

... Long Grommet, Front, Box Mount Receptacle .069(1.75) .058(1.47) .322(8.18) .317(8.05) E BLUE COLOR BAND C E +.010 +.25 -.005 -.13 ±.003 mm inch mm inch 15.09 .120 3.05 ...

Page 9

... RING F HEX NUT PER MS3186 E THREAD 3 BAYONET PINS BLUE COLOR BAND Jam Nut Thread ±.41 Class 2A ±.003 ±.08 mm inch mm inch 31 ...

Page 10

... G MAX BLUE COLOR BAND A MIN SHELL Accessory Teeth Thread Maximum UNEF-2A inch mm 12 7/16-28 .750 19.05 16 9/16-24 .859 21.82 ...

Page 11

... G MAX BLUE COLOR BAND RFI STRIP A MIN SHELL Accessory Teeth Thread Maximum UNEF-2A inch mm 12 7/16-28 .750 19.05 16 9/16-24 .859 21 ...

Page 12

... BLUE COLOR BAND A MIN SHELL L MAX F L Maximum Maximum mm inch mm 19.05 1.859 47.22 21.82 1.859 47.22 26.19 1.938 49.23 29.36 2.125 53 ...

Page 13

... The insert arrangement does not rotate relative to master keyway (key). Shell Size N° 8 100 10 100 12 100 14 100 16 100 18 100 20 100 22 100 24 100 www.conesys.com Keying Positions NORMAL MASTER KEYWAY B° A° N° 10° Keying Positions BSC A° B° ...

Page 14

... Flange and Jam Nut Receptacles Panel Cutouts D MAX PANEL THICKNESS B MIN Note 2: D MAX ±.005 ±.13 Maximum mm inch mm inch 14.15 .128 3 ...

Page 15

... Inactive for new design Note 1: Test Current and Maximum Voltage Drop when tested with silver-plated wire at 25°C. www.conesys.com Socket Contacts Military No. Military No. M39029/57-354 M39029/57-355 MS27488-22-1 M39029/57-356 M39029/57-357 MS27488-20-1 M39029/57-358 MS27488-16-1 M39029/78-432 M39029/57-359 MS27488-12-1 Positioner Positioner Insertion Tool For Socket Contacts Military No ...

Page 16

... M39029/58-365 M39029/57-359 For coax contacts refer to instructions supplied with contacts. www.conesys.com Contact Installation Instructions 3. Place the correct insertion tool on the contact so that the wire runs along the groove in the tool. (Tool tip will butt against the shoulder.) Hold the plug or receptacle body fi ...

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