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| QA
Technology highly recommends that holes
initially drilled in fixture plates be verified
using pin gauge tools (PG-X39, PG-X50 and
PG-X75A) due to the tolerances of purchased
drill bits which can be undersized by as
much as .0005" or more. The machine feed
rate, RPM and material used, can also affect
the hole size. Undersized holes will not
pass go-no-go pin gauge testing. Undersized
holes will not only create problems when
inserting the termination pins but can also
cause bent and/or stuck down plungers within
the finished fixture. Therefore, QA Technology
strongly suggests the use of pin gauges
for hole size verification before attempting
termination pin or probe installation during
the assembly of the fixture. |
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| X Series |
Fixture
Plates |
Hole
Specification |
Suggested
Drill Sizes
(Decimal) |
| X39
Series |
Probe
Plate |
0.0315/0.0325
[0.80/0.83] |
#67
(.032)
#66 (.033) |
| Optional
Spacer Plate |
0.034
[0.860] minimum |
.85mm
(.0335)
#65 (.035) |
Back
Plate
(Wired Termination) |
0.0315/0.0325
[0.80/0.83] |
#67
(.032)
#66 (.033) |
Back
Plate
(Wireless Termination) |
0.0315/0.0325
[0.80/0.83] |
#67
(.032)
#66 (.033) |
| X50
Series |
Probe
Plate |
0.042/0.043
[1.07/1.09] |
#58
(.042)
#57 (.043) |
| Optional
Spacer Plate |
0.045
[1.14] minimum |
1.15mm
(.0453)
#56 (.0465) |
Back
Plate
(Wired Termination) |
0.038/0.039
[0.97/0.99] |
#62
(.038)
#61 (.039)
1.00mm (.0394) |
Back
Plate
(Wireless Termination) |
0.038/0.039
[0.97/0.99] |
#62
(.038)
#61 (.039)
1.00mm (.0394) |
X75
Series
(TWA versions only) |
Probe
Plate |
0.0545/0.0555
[1.38/1.41] |
#54
(.055)
1.40mm (.0551) |
| Optional
Spacer Plate |
.0625
[1.59] minimum |
1/16
(.0625)
1.6mm (.063) |
Back
Plate
(Wired Termination) |
0.0515/0.0525
[1.31/1.33] |
#55
(.052)
1.35mm (.0531) |
Back
Plate
(Wireless Termination) |
0.038/0.039
[0.97/0.99] |
#62
(.038)
#61 (.039)
1.00mm (.0394) |
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