257-411 Datasheet, PDF (1/2 Pages) Glenair, Inc. – Twinax Receptacle Connector

257-411
Twinax Receptacle Connector
Jam Nut Mount • Metal or Composite
Ground Plane • 8GA • MIL-DTL-38999 Series III Type
Basic Part Number
257-411 = D38999 Series III Type
Twinax Connector
Finish Material
(See Table II)
Ground Plane
Option
G = Outer Contacts
Grounded to Shell
–– = Standard Insulated
Contacts
Shell
Size
Insert Designator
P = Pin Insert
S = Socket
A = Less Pin Contacts/
Grommet Followers
B = Less Socket Contacts/
Grommet Followers
257-411 XM 08 - 25 - G 8 P N
Connector Style
08 = Receptacle,
Jam Nut
Insert Arrangement
Dash Number
(See Page D-37)
Alternate Key
Position
A, B, C, D, or E
(N for Normal)
2.000 (50.8) Max
1.280 (32.5) Max
.890 (22.6) Max
2x U
Master Keyway
.579/.555
(14.7/14.1)
Z
See Note 2
S Thread
E
Y Thread
V Flat
Blue Color Band
(See Note 5)
Red Color Band
ØT
See Notes 3 and 4
.520 (13.2) Max
Fully Mated
Indicator Band Red _{W Thread}
Panel Thickness .126-.06 (3.2-1.5)
Grommet Follower For
M17/176-00002 Cable (See
P/N Development).
Ref: Jacket OD .129 ± .005
APPLICATION NOTES
1. Material/Finishes:
Receptacle and Jam Nut - See Table II.
(Composite coupling is unplated).
Insulators - Aluminum alloy/Conductive plate
or high-grade thermoplastic.
Contact retainer clips - HT BeCu/Conductive plate.
Seals - Fluorosilicone/N.A.
2. Assembly to be identified with Glenair’s name, partnumber
and date code, space permitting.
3. Insert arrangements are in accordance with MIL-STD-1560
(See page D-37).
4. Insert arrangement shown is for reference only.
5. Blue color band indicates rear release retention system.
6. Ground plane performance: per Table II, between outer
contact and plug barrel (see part number development).
7. For P and S, receptacle is supplied with contacts P/N
M39029/90-529 (Pin) or M39029/91-530 (Socket) and
Grommet Follower P/N 687-643-8-1 (No spares/sealing plugs
provided).
8. Metric dimensions (mm)are in parentheses.
© 2010 Glenair, Inc.
CAGE CODE 06324
Printed in U.S.A.
GLENAIR, INC. • 1211 AIR WAY • GLENDALE, CA 91201-2497 • 818-247-6000 • FAX [phone]
www.glenair.com
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E-Mail: [e-mail]