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JACKS AND PLUGS
FAX: 773 792-2129 MIL-TYPE 1/4" PHONE PLUGS
* Please visit the product pages on our website for the most up-to-date product information
MIL-TYPE 1/4" TWIN PHONE PLUGS
141
Number 411
Number 412
FEATURES
Design and material strictly in accordance with Specification
MIL-P-642(A), MIL part number molded or stamped on
handle, manufacturer’s trademark (as required in MIL
Specification) appears on plug body. Ideal for use in broadcast
and recording studios, military, industrial and telephone
switchboard applications, instrumentation and telemetry.
Individual plugs, featuring one-piece tip rod and one-piece
sleeve and plug body, with complete continuity of
thermoplastic insulation between plug elements, are placed
into handles to provide a double Twin-Plug ? plug (two
electrically-independent 2-conductor plugs spaced .625"
center-to-center, with self-alignment feature). 411, 414 and
415 Twin-Plug plugs have provision for use of Cord Clamp
Number S2674 . 412 Twin-Plug has external Cord Anchor.
6-conductor Twin-Plug, 414 and 415, provide two
electrically-independent 3-conductor plug fingers spaced on
.625" centers. Fingers are insulated from each other and each
provides tip, ring and sleeve connections. Black plastic handle
is notched to indicate polarity. Accepts standard 6-conductor
cables. Handle has provision for use of Cord Clamp, S2674 .
Number 414
Number 415
Fingers of 414 are .25" diameter and mate with Switchcraft
type MT389 Twin-Jax ? , MT333B, MT336 MT-Jax ? , and other
jacks having .25" inside diameter sleeves and mounted
on .625" centers. 415 has a .25" diameter finger and a .206"
diameter finger to provide automatic polarization. Fingers mate
with Switchcraft MT332B and MT342B MT-Jax, respectively.
STRAIN RELIEF CLAMP
Natural brass. For use only with 411, 414, 415 Twin-Plug,
S2674 .
SPECIFICATIONS
Tip, Rod, Ring Sleeve, Body, Screws: Copper alloy, natural
finish. Number 412 Handle Screws - iridescent iridite overplating.
Terminals: Tinned copper alloy. (Latest MIL Specifications
no longer specify terminals; terminal furnished is the type
referenced as TM-89).
Insulation: Thermoplastic; per MIL-P-22985, Type II, Class 1.
Handle: Thermoplastic on 411, 412, 414 and 415, per
MIL-P-22985, Type II, Class 4. Molded black thermoset
plastic per MIL-M-14F.
Part No. Conductors
411 2
412 2
414 3
Terminals
Screw
Screw
Screw
"Typical Mating Jack1"
MT388
MT388
MT389
Mil No.
M642/9-1
---
---
Notes
Provision for internal cord clamp (not included)
MILPJ289. Similar to WECo289B
6-circuit plug, 2 electrically-independent 3 conductor
fingers, .25" fingers. Provision for internal cord clamp
(not included) Similar to WECo 338A. 425A-3
415
3
Screw
MT332B &1, MT342B
---
6-circuit plug, 2 electrically-independent 3 conductor
fingers, one .25" finger, one .206" finger. Provision for
internal cord clamp (not included)
1. Switchcraft Part Numbers. See Jacks Section for other mating jacks.
DIMENSIONS ARE FOR REFERENCE ONLY
Inch
(mm)
SWITCHCRAFT, INC. 5555 N. Elston Ave. ? Chicago, IL 60630
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