Butt Contact Pushbutton Switches
SERIES 39
SPST, 150 mA
FEATURES
• 1/4" Diameter
• Up to 1,000,000
Cycles of Operation
• PC Mount
DIMENSIONS
39-405*
Pushbutton Switches
39-401*
39-424*
in inches (and millimeters)
.110 ± .005
(2,79 ± 0,13) DIA.
A
E.I.A. DATE
CODE LABEL*
TERMINALS ARE
.020 (0,50) SQUARE
B
C
D
Action
Momentary
Rating at
28 Vdc
Resistive
150 mA
Operations
at Rated
Load
1,000,000
*Complete
Part
Number
39-405 RED
39-405 BLK
Button
Color
Red
Black
Actuating
Force (oz.)
4
+4
–2
SPST–Normally Open, without Nut
8-40 UNS-2A
THREAD
.640 (16,26)
REF.
.250 +.010/ –.005
(6,35 + 0,25/ – 0,13)
.100 ± .010 (2,54 ± 0,25)
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 = .125 ± .010 (3,18 ± 0,25)
Total
Travel
.035 ± .015
(0,89 ± 0,38)
SPST–Normally Open, with Nut
8-40 UNS-2A
THREAD
H = HEX MTG NUT
.219 ± .010 (5,56 ± 0,25)
ACROSS FLATS
.063 ± .010 (1,59 ± 0,25)
THICK
TERMINALS ARE
.020 (0,50) SQUARE
H
E.I.A.
DATE
CODE
LABEL*
.110 ± .005
(2,79 ± 0,13) DIA.
A
B
C
D
.640 (16,26)
REF.
Rating at
28 Vdc
Resistive
150 mA
Action
Momentary
Operations
at Rated
Load
1,000,000
*Complete
Part
Number
39-401 RED
39-401 BLK
Button
Color
Red
Black
Actuating
Force (oz.)
4
+4
–2
.250 +.010/ –.005
(6,35 +0,25/ – 0,13)
.100 ± .010 (2,54 ± 0,25)
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 = .125 ± .010 (3,18 ± 0,25)
Total
Travel
.035 ± .015
(0,89 ± 0,38)
SPST–Normally Open, with Overtravel
8-40 UNS-2A
THREAD
H = HEX MTG NUT
.219 ± .010 (5,56 ± 0,25)
ACROSS FLATS
.063 ± .010 (1,60 ± 0,25)
THICK
TERMINALS ARE
.020 (0,50) SQUARE
H
E.I.A.
DATE
CODE
LABEL*
.110 ± .005
(2,79 ± 0,13) DIA.
A
B
C
D
.780 (19,81)
REF.
Rating at
28 Vdc
Resistive
150 mA
Action
Momentary
Operations
at Rated
Load
100,000
Total
Travel
.130 ± .025
(3,30 ± 0,64)
*Complete
Part
Number
39-424 RED
39-424 BLK
Over
Travel
.015 (0,38)
Min.
Button
Color
Red
Black
Actuating
Force (oz.)
5±3
.250 +.010/ –.005
(6,35 +0,25/ – 0,13)
.100 ± .010 (2,54 ± 0,25)
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 = .125 ± .010 (3,18 ± 0,25)
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
39-501*
39-503*
in inches (and millimeters)
Mounting Footprint
.315 ± .010
(8,00 ± 0,25)
.300 ± .005
(7,62 ± 0,13)
C
Right Angle, SPST–Normally Open
.110 (2,79)
± .010 (0,25) DIA.
.175 +.025/ –.020
(4,45 +0,64/ – 0,51)
.100
(2,54)
.300
(7,62)
.050 (1,27)
A = .125 ± .010
(3,18 ± 0,25)
B = .215 ± .015
(5,46 ± 0,38)
.100 (2,54) REF.
A
B
.600
(15,24)
REF.
E.I.A.
DATE
CODE
LABEL*
.089
(2,26)
MIN.
C = .060 ± .005
(1,52 ± 0,13)
*Label increases
nominal diameter
to .255 (6,48)
.200
(5,08)
.100 (2,54)
HOLES FOR
.020 (0,51)
SQUARE PINS (4)
*Complete
Part
Number
39-501 RED
39-501 BLK
39-503 RED
39-503 BLK
.250 + .010/ –.005
(6,35 + 0,25/ – 0,13) DIA.
.050 ± .010
(1,27 ± 0,25)
.075 ± .010
(1,91 ± 0,25)
.300 (7,62)
REF.
Rating at
28 Vdc
Resistive
150 mA
Operations
at Rated
Load
1,000,000
Button
Color
Red
Black
Red
Black
Actuating
Force (oz.)
4 +4
–2
.050 (1,27)
REF.
.140 ± .015
(3,56 ± 0,38)
.200 ± .005
(5,08 ± 0,13)
Protective cap
(included with 39-503
RED and 39-503 BLK)
seals switch during
wave soldering.
Action
Momentary
Total
Travel
.035 ± .015
(0,89 ± 0,38)
Pushbutton Switches
SPST–Normally Open, with Panel and Button Seal
39-138*
.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=.135±.005 (3,43±0,13)
A
B
.692 REF
(17,58)
C
D
#8-40 UNS-2A
THREAD
HEX MTG. NUT
.0625 (1,59) THICK
.218 (5,54) ACROSS FLATS
E.I.A. DATE CODE
.110 ± .005
(2,79 ± 0,13)
.020±.002
(,508±,051)
SQUARE TYP
Rating at
115 Vac
Resistive
½ Amp
Action
Momentary
Operations
at Rated
Load
250,000
*Complete
Part
Number
39-138 RED
39-138 BLK
Button
Color
Red
Black
Actuating
Force (oz.)
16 ± 8
.312±.005
(7,92±0,13)
ACROSS FLATS
Total
Travel
.035 ± .015
(0,89 ± 0,38)
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
* Note: Solder process temperatures should
not expose main switch body to temperatures
higher than 270F. (132C). Reflow soldering is
not recommended. Contact Grayhill for more
specific details.
Materials and Finishes
ORDERING INFORMATION
Part No.
39-401 RED
39-401 BLK
39-405 RED
39-405 BLK
39-424 RED
39-424 BLK
39-501 RED
39-501 BLK
39-503 RED
39-503 BLK
39-138 RED
39-138 BLK
Accessory
Part Number
30B1012-5
30B1012-8
30B1012-9
30B1012-5
30B1012-8
30B1012-9
SHH1699
Type & Button Color
N.O., Red
N.O., Black
N.O., No Nut, Red
N.O., No Nut, Black
N.O., Overtravel, Red
N.O., Overtravel, Black
N.O., Right Angle, Red
N.O., Right Angle, Black
39-501 Red & Cap Seal
39-501 Blk & Cap Seal
39-351 PC Mount & Seal
39-351 PC Mount & Seal
Description
Red Accessory Cap
White Accessory Cap
Black Accessory Cap
Cap Seal Only, Black
Bushing/Housing:
Aluminum, clear anodized
for 39-138; Brass, tin zinc for all others
Standoff:
(39-501 and 39-503) Brass, tin plated
over nickel
Base and Button:
Thermoplastic
Shorting Bar:
Brass, gold-plated over nickel
plate for 39-501and 39-503; fine silver, gold-
plated for others
Terminals:
Fine silver, gold-plated for 39-138;
Brass, gold-plated over nickel for all others
Spring:
Tinned music wire
Mounting Nut:
(39-401 and 39-424) Brass,
zinc trivalent chromate-plated
CIRCUITRY
ACCESSORIES
SHH1699
SPST–N.O.
Available from your local Grayhill Distributor. For prices and discounts, contact a local Sales Office, an authorized Distributor or Grayhill.
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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