Butt Contact Pushbutton Switches
SerieS 39
SPSt, 150 ma to 1/2 amp
FeatureS
• Requires an Absolute Minimum of Space
• Molded-In Terminals in SPST–N.O.
• Solder Lug Terminals
diMenSiOnS
39-1
39-3
39-601*
.110
±
.005
(2,79
±
0,13) DIA.
8-40 UNS-2A
THREAD
H
H = HEX MTG NUT
.063
±
.010 (1,59
±
0,25)
THICK
.219
±
.010 (5,56
±
0,25)
ACROSS FLATS
.068 ±.005
(1,73 ± 0,13)
in inches (and millimeters)
normally Open–SPSt economy and Standard Version
economy Version
electrical
ratings
Operations *Complete
at rated
Part
Load
number
39-601 RED
39-601 BLK
Button
Color
Red
Black
At 5 Vdc At 20 Vdc
1,000,000
150 mA 20 mA
action
A
B
C
D
.615 (15,62)
REF.
.072 ±.005
(1.83± 0,13)
.036 ±.005
(0,91 ± 0,13)
E.I.A.
DATE
CODE
LABEL*
Momentary
actuating
Mtg.
total
Force (oz.)
Hole
travel
.035 ± .015
11/64"
4 + 4
- 2
(0,89 ± 0,38) (4,37) DIA.
Pushbutton Switches
Standard
electrical
ratings
Operations
at rated
Load
Complete
Part
number
Button
Color
.250 + .010/ –.005
(6,35 + 0,25/ – 0,13)
DIAMETER
A = .175 + .025/ –.020 (4,45 + 0,64/ – 0,51)
*Label increases
B = .125
±
. 010 (3,18
±
0,25)
nominal diameter
C = .215
±
.015 (5,46
±
0,38)
to .255 (6,48)
D = .100
±
.020 (2,54
±
0,51)
At 115 Vac At 220 Vac
1,000,000
1
/
2
Amp Res.
1
/
4
Amp Res.
action
Momentary
39-1
Red
39-3 Black
Mtg.
Hole
11/64"
(4,37) DIA.
actuating
total
Force (oz.)
travel
+ 4
.035 ± .015
4
– 2
(0,89 ± 0,38)
normally Open–SPSt with Sealed Bushing and Button
39-351*
.110– .005 DIA.
(2,79 – 0,13)
A = .175 +.025/ .020
(4,45 +0,64/ 0,51)
B = .125 – .010
(3,18 – 0,25)
C = .250 –.015
(6,35 – 0,38)
D = .100 – .020
(1,54 – 0,51)
E.I.A.
DATE
CODE
A
B
.650
(16,51)
REF.
O
HEX MTG. NUT
.0625 (1,59) TYP.
THICK AND
.218 (5,54) TYP.
ACROSS FLATS
O = O RING
.068 – .005 (1,73 – 0,13)
.036 – .005 (0,91 – 0,13)
.072 – .005 (1,83 – 0,13)
#8-40 UNS-2A THREAD
rating at
115 Vac
resistive
1
rating at
220 Vac
resistive
Operations
at rated
Load
*Complete
Part
number
39-351 RED
39-351 BLK
Button
Color
Red
Black
/
2
Amp
1
/
4
Amp 250,000
total
travel
C
XXXX
action
Momentary
actuating
Force (oz.)
D
.312 –.005
(7,92 –0,13)
ACROSS
FLATS
.035 ± .015 16 ± 8
(0,89 ± 0,38)
Button is O-Ring
sealed internally.
normally Open–SPSt with Overtravel
39-12
39-24
8-40 UNS-2A
THREAD
H
H = HEX MTG NUT
.063 .010 (1,60 0,25)
THICK
.219 .010 (5,56 0,25)
ACROSS FLATS
.072 .005
(1.83 0,13)
.036 .005
(0,91 0,13)
.110 .005
(2,79 0,13) DIA.
A
B
C
D
.755 (19,18)
REF.
rating at
115 Vac
resistive
1
rating at
220 Vac
resistive
Operations
at rated
Load
Complete
Part
number
39-12
39-24
actuating
Force (oz.)
Button
Color
Red
Black
Mtg.
Hole
E.I.A.
DATE
CODE
LABEL*
/
2
Amp
1
/
4
Amp 100,000
Over
travel
action
.068 .005
(1,73 0,13)
.250 + .010/ – .005
(6,35 + 0,25/ – 0,13)
DIAMETER
A = .175 + .025/ –.020 (4,45 + 0,64/ – 0,51)
*Label increases
B = .125 .010 (3,18 0,25)
nominal diameter
C = .355 .015 (9,02 0,38)
to .255 (6,48)
D = .100 .020 (2,54 0,51)
total
travel
11/64"
Momentary .130 ± .025 .015 (0,38)
5 ± 3 (4,37)
(3,30 ± 0,64) Min.
DIA.
Grayhill, Inc. • 561 Hillgrove Avenue • LaGrange, Illinois
60525-5997 • USA • Phone: 708-354-1040 • Fax: 708-354-2820 • www.grayhill.com
Butt Contact Pushbutton Switches
diMenSiOnS
39-2
in inches (and millimeters)
.105 – .005
(2,67 – 0,13) DIA.
8-40 UNS-2A
THREAD
H
H = HEX MTG NUT
.063 – .010 (1,60 – 0,25)
THICK
.219 – .010 (5,56 – 0,25)
ACROSS FLATS
E.I.A.
DATE
CODE
LABEL*
B
C
D
A
.780 (19,81)
REF.
normally Closed–SPSt
rating at
115 Vac
resistive
1
rating at
220 Vac
resistive
Operations
at rated
Load
Part
number
39-2
actuating
Force (oz.)
Cap
Color
Black
Mtg.
Hole
.172
(4,37) DIA.
/
4
Amp
1
/
8
Amp 250,000
action
total
travel
.100 ±.010
(2,54 ± 0,25)
.060 ± .010
(1,52 ± 0,25)
.250 +.010/ .005
(6,35 +0,25/ 0,13)
DIAMETER
A = .175 – .025 (4,45 –0,64)
*Label increases
B = .125 – . 010 (3,18 – 0,25)
nominal diameter
C = .390 – .010 (9,91 – 0,25)
to .255 (6,48)
D = .100 (2,54) MAX.
Momentary
+ 4
.042 ± .010
4 – 2
(1,07 ± 0,25)
normally Closed–SPSt with Sealed Bushing and Button
39-352*
Pushbutton Switches
.110– .005 DIA.
(2,79 – 0,13)
A
B
.819
(20,80)
REF. E.I.A.
DATE
CODE
LABEL*
#8-40 UNS-2A THREAD
H
O-RING
H = HEX MTG. NUT
.0625 (1,59) TYP.
THICK AND
.218 (5,56) TYP.
ACROSS FLATS
.100 (2,54) MAX.
.250 +.010/ .005
(6,35 + 0,25/ 0,13)
.100 – .010 (2,54 – 0,25)
.060 – .010 (1,52 – 0,25)
A = .165 +.035/ .015
(4,19 +0,89/ 0,38)
B = .125 – .007
(3,18 – 0,18)
C = .429 –.015
(10,90 – 0,38)
D = .100 (2,54) MAX.
E = 10 TO 40
APPROX.
rating at
115 Vac
resistive
1
rating at
220 Vac
resistive
Operations
at rated
Load
*Complete
Part
number
39-352 RED
39-352 BLK
Button
Color
Red
Black
/
4
Amp
1
/
8
Amp 100,000
C
action
Momentary
D
E
.312 –.005
(7,92 –0,13)
ACROSS
FLATS
actuating
total
Force (oz.)
travel
.042 ± .010
8 ± 4
(0,17 ± 0,25)
Button is o-ring
sealed internally.
*Label increases nominal diameter to .255 (6,48)
CirCuitry
Materials and Finishes
OrderinG inFOrMatiOn
Part
number
39-1
39-2
39-3
39-12
39-24
39-351
red
39-351
BLK
39-352
red
39-352
BLK
39-601
red
39-601
BLK
description
N.O., Red Button
N.C., Black Button
N.O., Black Button
N.O., Overtravel Red Button
N.O., Overtravel Black Button
N.O., Sealed, Red Button
N.O., Sealed, Black Button
N.C., Sealed, Red Button
N.C., Sealed, Black Button
N.O., Economy, Red Button
N.O., Economy, Black Button
SPSt n.O.
SPSt–n.O. WitH OVertraVeL
SPSt n.C.
SPeCiFiCatiOnS
rating Criteria
Contact resistance:
25 milliohms maximum
on a new switch
Voltage Breakdown:
1,000 Vac between
mutually insulated parts
insulation resistance:
1,000 megohms
minimum
Operating temperature: -40°C to +85°C
Mounting torque: 2 inch-pounds
Mounting nut: Brass, tin zinc
Housing:
Aluminum, clear anodized for
39-351 and 39-352; Brass, zinc trivalent
chromate-plated for others
Button: Thermoset plastic
Base: Thermoset plastic
Shorting Bar: Fine silver for 39-2 and 39-352;
brass, gold-plated over nickel plate for 39-601;
fine silver, gold-plated for others
terminals:
Fine silver for 39-2 and 39-352;
commercial bronze with gold-plated fine silver
contact surface for others
Spring: Tinned music wire
O-rings: (39-351 and 39-352) Internal ring is
silicone; external ring is buna ‘N’
Accessory cap may be used with all switches
shown except 39-2.
accessory
Part number
description
aCCeSSOry
Button Cap
Part No. 30B1012
For use with part numbers
39-351 and 39-352.
(Fasten to button with
Cyanoacrylate Adhesive)
30B1012-5
Red Button Cap
30B1012-9 Black Button Cap
30B1012-8 White Button Cap
Grayhill, Inc. • 561 Hillgrove Avenue • LaGrange, Illinois
60525-5997 • USA • Phone: 708-354-1040 • Fax: 708-354-2820 • www.grayhill.com
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