Standard crescent wrench has been modified to provide a means whereby one adjustable tool can be used with all sizes of electronic connectors. The machined wrench jaws provide lugs for engaging the standard size slots on the different connectors

Johnson, W. C.

English

NASA Technical Reports Server

Modified Jaws 
Standard Size
Notches 
Connectors 
Plates Welded To 
Faces Of Wrench
Opening for 3/8 
Torque Wrench 
June 1969	 Brief 69-10184 
NASA TECH BRIEF la 
NASA Tech Briefs are issued to summarize specific innovations derived from the U.S. space program, 
to encourage their commercial application. Copies are available to the public at 15 cents each 
from the Clearinghouse for Federal Scientific and Technical Information, Springfield, Virginia 22151. 
Adjustable Wrench for Electronic Connectors 
MODIFIED STANDARD CRESCENT WRENCH 
A standard crescent wrench has been modified to 
provide a means whereby one adjustable tool can be 
used with all sizes of electronic connectors. Previously, 
because a number of different connector sizes were 
available and because each connector when used had 
to be torqued to a specific value, a considerable num-
ber of wrenches were needed to meet electronic as-
sembly requirements. As the application of the uni-
formly slotted connectors increases, the desirability of 
a single tool for use in assembly of electronic units 
should be of considerable interest. 
The figure illustrates a standard crescent wrench 
reworked for use with any size electrical connector 
having uniformly slotted flanges. The wrench jaws 
were machined to provide lugs for engaging the stand-
ard size slots on the different connectors. A square 
opening is provided for use by the torque wrench. 
Small plates have been welded to the top and bottom
faces of the wrench to prevent dropping or rocking of 
the wrench head during connector torquing. 
Note: 
No further documentation is available. Inquiries 
may be directed to: 
Technology Utilization Officer 
Marshall Space Flight Center 
Huntsville, Alabama 35812 
Reference: B69-10184 
Patent status: 
No patent action is contemplated by NASA. 
Source: W. C. Johnson

of Rocketdyne,
a Division of

American Rockwell Corporation

under contract to

Marshall Space Flight Center

(MFS-18547) 
Category 05 
Mr
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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Adjustable wrench for electronic connectors

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