Unit: INCH (MM) 13
CORPORATION 4915 W alnut Grove A ve. San Gabriel, CA 91776 Tel. 626-287-0451 F ax 626-287-7350
E-mail: sales@calmark.com tech@calmark.com Website: http://www.calmark.com
Calmark offers the Series NW165 and NW166 Card Retainer for cold plate heat exchanger applications. The Series NW165 and
NW166 Card Retainer provides the necessary spring pressure to insure positive contact between the thermal path on the PC
card and the cold plate surface. Conforms to DESC 85034.
Coined edges allow
smooth insertion and
extraction without dam-
age to card.
Mounting holes are offset from card path and occur
every inch, offering a choice of mounting patterns.
Spring fingers hold card against rigid
side for thermal and electrical contact.
Also provides dampening under shock
and vibration.
Turned in tabs limit card excursion
under dynamic loading.
Cold Plate
Series NW165 - Shown
Series NW166 - Opposite
MATERIAL: .016 (0.41) Alloy 10 Beryllium Copper. Cond.
“AT” per MIL-C-81021
FINISH: No Finish
WEIGHT: .034 oz./inch (.38g/cm)
SPRING RATE: 32 lbs./inch of deflection/spring finger
(56.0 N/cm)
TOLERANCES: .xxx =+/-.010, .xx = +/- .02
(.xx = +/- 0.25, .xx = +/- 0.5)
TABULATION
series nw165 and nw166 - retainer
Break sharp edges.
.170
+/-.005
(4.32 +/-0.13)
Recommended
Mounting Dim.
Card
FEATURES:
LENGTH
.096 Dia.
Hole
+/- .002
Typ.
.165 Typ.
.750
Typ.
G
1.000
+/- .005
Tol.
Noncum.
B
.125
Typ.
.145 +/- .005
(3.68 +/- 0.13)
.165
.256 (6.50)
.140
(2.44 +/- 0.05)
(19.05)
+/-0.13 (25.40)
(3.18)
(4.19)
(3.56)
(4.19)
APPLICATION DATA
.oNhsaD draC ssenkcihT
.miDB )83.0+(510.+ )0.0-(000.-
miDG )0.0(00.+ )08.0-(30.-
60-)6.1(61/1)14.2(590.)49.3(551.
90-)4.2(23/3)56.1(560.)81.3(521.
P ART NO. CODE
NW165-06-3.25
Length
(1.25 thru 12.25 by 1” increments)
Longer lengths available on request.
Card Thickness
(see Tabulation)
Basic No.
NW165-Shown
NW166-Opposite
Finish Options:
No Suffix = No finish
“T” = Bright Tin Plate per
Mil-T-10727, .0002 Min. Thk.
“EN” = Electroless Nickel Plate
per Mil-C-26074, Cl. 1, Gr.B
Other finishes available on request
