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*
In Inches (and millimeters)
Normally Open–SPST Economy and Standard Version
Economy Version
Electrical
Ratings
Operations *Complete
at Rated
Part
Load
Number
1,000,000
39-601 RED
39-601 BLK
Button
Color
Red
Black
Mtg.
Hole
11/64"
(4,37) DIA.
.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)
At 5 Vdc At 20 Vdc
150 mA 20 mA
Action
A
B
C
D
.615 (15,62)
REF.
E.I.A.
DATE
CODE
LABEL*
Momentary
Total
Travel
.035 ± .015
(0,89 ± 0,38)
Actuating
Force (oz.)
4 +4
-2
Pushbutton Switches
Standard
Electrical
Ratings
Operations
at Rated
Load
Complete
Part
Number
39-1
39-3
Button
Color
Red
Black
Mtg.
Hole
11/64"
(4,37) DIA.
.072 .005
(1.83 0,13)
.036 .005
(0,91 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 = .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
Total
Travel
.035 ± .015
(0,89 ± 0,38)
Actuating
Force (oz.)
4 +4
–2
Normally Open–SPST with Sealed Bushing and Button
39-351*
.110± .005 DIA.
(2,79 ± 0,13)
#8-40 UNS-2A THREAD
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
D
.312 ±.005
(7,92 ±0,13)
ACROSS
FLATS
.068 ± .005 (1,73 ± 0,13)
.036 ± .005 (0,91 ± 0,13)
.072 ± .005 (1,83 ± 0,13)
Rating at
115 Vac
Resistive
1
Rating at
220 Vac
Resistive
1
Operations
at Rated
Load
250,000
*Complete
Part
Number
39-351 RED
39-351 BLK
Button
Color
Red
Black
/
2
Amp
/
4
Amp
C
XXXX
Action
Momentary
Total
Travel
.035 ± .015
(0,89 ± 0,38)
Actuating
Force (oz.)
16 ± 8
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
E.I.A.
DATE
CODE
LABEL*
B
C
D
.755 (19,18)
REF.
.110 .005
(2,79 0,13) DIA.
A
Rating at
115 Vac
Resistive
1
Rating at
220 Vac
Resistive
1
Operations
at Rated
Load
100,000
Complete
Part
Number
39-12
39-24
Actuating
Force (oz.)
5±3
Button
Color
Red
Black
Mtg.
Hole
11/64"
(4,37)
DIA.
/
2
Amp
/
4
Amp
Action
.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
.130 ± .025
(3,30 ± 0,64)
Over
Travel
.015 (0,38)
Min.
Momentary
Grayhill, Inc. • 561 Hillgrove Avenue • LaGrange, Illinois
60525-5997 • USA • Phone: 708-354-1040 • Fax: 708-354-2820 • www.grayhill.com
Pushbutton
41
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
Action
D
Momentary
Total
Travel
.042 ± .010
(1,07 ± 0,25)
Actuating
Force (oz.)
+4
4 –2
Mtg.
Hole
.172
(4,37) DIA.
A
.780 (19,81)
REF.
Rating at
115 Vac
Resistive
1
Normally Closed–SPST
Rating at
220 Vac
Resistive
1
Operations
at Rated
Load
250,000
Part
Number
39-2
Cap
Color
Black
/
4
Amp
/
8
Amp
.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.
Normally Closed–SPST with Sealed Bushing and Button
39-352*
Pushbutton Switches
.110± .005 DIA.
(2,79 ± 0,13)
A
H
B
.819
(20,80)
REF. E.I.A.
DATE
CODE
LABEL*
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)
Button is o-ring
sealed internally.
.100 ± .010 (2,54 ± 0,25)
.060 ± .010 (1,52 ± 0,25)
Rating at
115 Vac
Resistive
1
#8-40 UNS-2A THREAD
Rating at
220 Vac
Resistive
1
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.
Operations
at Rated
Load
100,000
*Complete
Part
Number
39-352 RED
39-352 BLK
Button
Color
Red
Black
/
4
Amp
/
8
Amp
C
Action
Momentary
D
E
.312 ±.005
(7,92 ±0,13)
ACROSS
FLATS
Total
Travel
.042 ± .010
(0,17 ± 0,25)
Actuating
Force (oz.)
8±4
*Label increases nominal diameter to .255 (6,48)
CIRCUITRY
Materials and Finishes
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’
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
Accessory cap may be used with all switches
shown except 39-2.
ACCESSORY
Button Cap
Part No. 30B1012
For use with part numbers
39-351 and 39-352.
(Fasten to button with
Cyanoacrylate Adhesive)
See page E-XXfor dimensions.
Accessory
Part Number
30B1012-5
30B1012-9
30B1012-8
Description
Red Button Cap
Black Button Cap
White Button Cap
Available from your local Grayhill Distributor.
For prices and discounts, contact a local Sales
Office, an authorized local Distributor or Grayhill.
Pushbutton
42
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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