[ANSS-netops] mounting bolts for RT 147-01/3 accelerometer

[Tom Yelin]

The OEM mounting/restraining bolts for these units have about
1-2mm play when inserted through the hole in the unit's chassis.

Paul Bodin and I are concerned that even with the nut
tightened, in the case of large ground motions there will be
an increased chance that the unit will shift (albeit
not my much) relative to the mounting point.

The hole appears to be just shy of 12 mm in diameter.
Has anyone been concerned enough about this issue
to find an alternate bolt?  If so, do you have
the size on record, and perhaps a supplier, too?

Sorry, but I am inherently lazy and trying to avoid
a trip to the local fasterner store.


Tom

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Mailing Address:


Tom Yelin, U.S. Geological Survey
c/o University of Washington
Dept of Earth & Space Sciences
Box 351310
Seattle, WA 98195-1310


Shipping Address:
(For UPS, FedEx and other services that
do not accept box numbers)

Tom Yelin
University of Washington
Dept. of Earth & Space Sciences
70 Johnson Hall
Seattle, WA  98195-1310

Phone:  206-553-1937
Fax:    206-553-8350

email:  yelin at ess.washington.edu

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