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3851/3852/3856 - 3/4 ” Diameter Panel Control
Product Dimensions
45 ° X
45 ° X
(.25) TYP.
3851A/3852A
9.53
(.38)
6.35 ± .76
(.25 ± .03)
.38
(.015)
12.7, 22.23
STD.
(1/2, 7/8)
3/8-32 UNEF
.25
(.010)
CHAMFER
3851B/3852B
12.7
(.50)
6.35 ± .76
(.25 ± .03)
.38
(.015)
15.88
STD.
(5/8)
3/8-32 UNEF
.25
(.010)
CHAMFER
Terminal Configuration
SOLDER LUG TERMINAL
6.35
2.79
(.110)
3 PLCS.
12.7
.047 WIDE X
EACH TERMINAL LUG
2 PLCS. 1 3
THREE (.032) DIAMETER
(.552 ± .010)
19.05
(.75)
DIA.
12.19
(.480)
DIA.
6.35+.03/-.05
DIA.
(.250+.001/-.002)
SHAFT SLOT
1.19
1.60+.38/.00
DEEP
(.063+.015/-.000)
19.05
(.75)
DIA.
12.19
(.48)
DIA.
6.35+.03/-.05
DIA.
(.250+.001/-.002)
SHAFT SLOT
1.19 WIDE X
(.047)
1.60+.38/-.00
(.063+.015/-.000) DEEP
14.02 ± .25
(.50)
2
WILL ACCOMMODATE
.81
(.812 DIA. AWG
STRANDED) WIRES.
STANDARD
PRINTED CIRCUIT TERMINAL
5.49 16.00
OPTIONAL FLAT
(.216) (.63)
1.52
LONG OR FRONT BUSHING FOR SHAFTS UNDER
(.06)
28.58
(1-1/8)
6.35
(.25)
15.88 ± .38
(.625 ± .015)
TYP.
1
2
3
1.02
(.040)
6.35
(.25)
TYP.
(1/2)
3851C/3852C
6.35
(.25)
6.35 ± .76
(.25 ± .03)
19.05
(.75)
DIA.
.38
(.015)
2.36
(.094)
9.53, 22.23
STD.
(3/8, 7/8)
1/4-32 UNEF
.25
45 ° X (.010)
CHAMFER
3851E/3852E
9.53
(.38)
6.35 ± .76
(.25 ± .03)
19.05
(.75)
DIA.
.38
(.015)
12.7
STD.
1/4-32 UNEF
.25
45 ° X (.010)
CHAMFER
SUGGESTED BOARD LAYOUT
6.35 6.35
(.25) (.25)
1.40
DIA.
(.055)
(.125 ± .001)
SHAFT SLOT
.79 WIDE X .76 DEEP
3.18 ± 0.25
12.19
DIA.
(.480)
(.031) (.03)
.25
OPTIONAL FLAT LONG OR
(.010)
1.52 15.88
FRONT BUSHING FOR SHAFTS UNDER
(.06) (5/8)
DIA.
12.19
(.480)
DIA.
3.18 ± .025
(.125 ± .001)
SHAFT SLOT
.79 WIDE X .76 DEEP
(.03) (.031)
DIA.
3851/3852/3856
A, B & H BUSHINGS
9.53
(.375)
10.31 3.18
DIA.
(.406) (.125)
DIA.
6.73
(.265)
9.53
(.375)
3.18
DIA. (.125)DIA.
Shaft End Detail
3850 Family
3856A
12.7
3856H
12.7
SHAFT SLOT
ALIGNMENT
FLAT
ALIGNMENT
6.35 ± .76
(.25 ± .03)
9.53
(.38)
.38
(.015)
(.50)
6.35+.03/-.05
(.250+.001/-.002)
3/8-32 UNEF
DIA.
6.35 ± .76
(.25 ± .03)
9.53
(.38)
.38
(.015)
(.50)
6.35+.03/-.05
(.250 ± .03)
3/8-32 UNEF.
DIA.
AT CCW
50 ° ± 10 °
AT CCW
50 ° ± 10 °
19.05
1.19
(.047)
19.05
.79
(.031)
DECIMALS: .XXX ±
.XX ±
(.75)
DIA.
12.19
DIA.
(.480)
1.60+3.81/-.000
(.063+.015/-.000)
DIA.
22.23
STD.
(7/8)
.25
45 ° X (.010)
CHAMFER
(.75)
DIA.
12.19
DIA.
(.480)
.79 ± .25
(.031 ± .010)
22.23
STD.
(7/8)
3.18 ± .03
(.125 ± .003)
DIA.
.25
45 ° X (.010)
CHAMFER
TOLERANCES EXCEPT AS NOTED:
.127 .38
(.005), (.015)
FRACTIONS: ± 1/64
ANGLE: ± 3 %
1
CCW
3
DIMENSIONS ARE:
MM
(INCHES)
2
POTENTIOMETER
Specifications are subject to change without notice.
Customers should verify actual device performance in their specific applications.
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