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New Tip Styles for 39mil and X31 Probes:
47-S Steel Torch is a self-cleaning and recommended for contacting leads, posts, and solder domes with heavy board contamination.

63-S Steel Chisel Recommended in applications where test pads and filled or pasted vias have heavy board contamination.

9R-S Steel Razor Recommended for solder domes and test pads where OSP, lead-free solder paste and no-clean processes are challenging.

039-25 or X31-25or PDF

NEW High Preload "F" Spring
for higher, more consistant spring force PDF



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Double Ended Sockets

.039 [1.00] Centers
.050 [1.27] Centers
.075 [1.91] Centers
.100 [2.54] Centers

Double-ended sockets are comprised of a standard socket with a special interface probe permanently attached to the tail of the socket.

Double-ended sockets allow construction of fixtures with far shorter signal path lengths than conventional wire-wrapped designs. The shorter path length allows better control of the signal from the tester circuits to the Unit Under Test (UUT).

Probe Specifications

Tube Material: Nickel silver/ID precious metal clad
Full Stroke: .125 [3.18] for 039-25 / .150 [3.81] for all others
Working Stroke: Up to .100 [2.54]
Operating Temp: Up to 250°F [120°C] for 039-25 / Up to 400°F [204°C] for all others

Spring Force

Mechanical Life
Cycles @ Stroke
.75 [21]
4.63 [131]
3.85 [109]
Music Wire
Gold Plated
10k min@
.100 [25.4] max
All Others
.80 [23]
5.22 [147]
3.75 [106]
Stainless S.
Gold Plated
100k min @
.100 [25.4] max


Note: Top test probe is not included with double ended sockets and should be ordered separately (see applicable product series)

All specifications subject to change without notice. All dimensions are in inches [mm].
All spring forces in ounces [gms].


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