Miniature plug and receptacle, which eliminates the need for permanent fixed leads, is used on wind-tunnel force balances, in the interface connections of microelectronic modular assemblies, and in electric and electronic systems where subsystems must be removed or interchanged

Phelps, W. R.

English

NASA Technical Reports Server

1/4 Max. Dia. 
,;;4 ____	 I 
Receptacle 
Plug
Wire Leads 
Sting 
Miniature Plug and Receptacle 
Patent status: 
Inquiries about obtaining rights for the commercial 
use of this invention may be made to NASA, Code 
GP, Washington, D.C. 20546.
Source: W. R. Phelps

Langley Research Center

(LA R-10607) 
Sting Nut
August 1970	 Brief 70-10249 
NASA TECH BRIEF 
NASA Tech Briefs announce new technology derived from the U.S. space program. They are issued to encourage commercial 
application. Tech Briefs are available on a subscription basis from the Clearinghouse for Federal Scientific and Technical 
Information, Springfield, Virginia 22151. Requests for individual copies or questions relating to the Tech Brief program may 
be directed to the Technology Utilization Division, NASA, Code UT, Washington, D.C. 20546. 
A Miniature 1/4-Inch Diameter 24-Pin Plug and Receptacle 
The problem: 
A miniature 24-pin plug and receptacle, which would 
eliminate the need for permanent fixed leads, was 
required for use on wind-tunnel force balances. 
The solution: 
A 1/4-inch diameter 24-pin plug, as shown in the 
figure, was developed for this application, eliminating 
the tedious and time consuming hookup procedures. 
How it's done: 
• An injection-molded male connector was installed 
in the taper end of a strain-gage balance. The recepta-
cle, also injection molded, and fitted with standard 
"twist pin" contacts and attached leads, is routed 
through the wind-tunnel sting and support structure 
which completes the connection to the instrumenta-
tion system. These connectors provided positive con-
nection in applications where space was a problem. 
The connectors are capable of operating in a tem-
perature environment from 
—65° to + 300° F. 
Notes: 
I. The 24-pin plug and receptacle can be used in the 
interface connections of microelectronic modular 
assemblies and in electric and electronic systems 
where subsystems must be removed or inter-
changed. 
2. No additional documentation is available. Specific 
questions, however, may be directed to: 
Technology Utilization Officer 
Langley Research Center 
Langley Station 
Hampton, Virginia 23365 
Reference: B70-10249
Category 01 
aL
This document was prepared under the sponsorship of the National 	 Government assumes any liability resulting from the use of the 
Aeronautics and Space Administration. Neither the United States	 information contained in this document, or warrants that such use 
Government nor any person acting on behalf of the United States	 will be free from privately owned rights.
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A miniature 1/4-inch diameter 24-pin plug and receptacle

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