Butt Contact Pushbutton Switches
SERIES 39
SPST, 150 mA
FEATURES
• 1/4" Diameter
• Up to 1,000,000
Cycles of Operation
• PC Mount
DIMENSIONS
in Inches (and millimeters)
SPST–Normally Open, without Nut
39-405*
Pushbutton Switches
39-401*
39-424*
8-40 UNS-2A
THREAD
E.I.A. DATE
CODE LABEL*
TERMINALS ARE
.020 (0,50) SQUARE
.110 ± .005
(2,79 ± 0,13) DIA.
A
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
.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)
Actuating
Total
Force (oz.)
Travel
+ 4
.035 ± .015
4
(0,89 ± 0,38)
– 2
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
Operations
at Rated
Load
1,000,000
*Complete
Part
Number
39-401 RED
39-401 BLK
Button
Color
Red
Black
.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)
Action
Momentary
Actuating
Total
Force (oz.)
Travel
+ 4
.035 ± .015
4
(0,89 ± 0,38)
– 2
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
*Complete
Part
Number
39-424 RED
39-424 BLK
Over
Travel
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)
.130 ± .025 .015 (0,38)
(3,30 ± 0,64) Min.
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
in Inches (and millimeters)
Right Angle, SPST–Normally Open
39-501*
39-503*
.110 (2,79)
± .010 (0,25) DIA.
.175 +.025/ –.020
(4,45 +0,64/ – 0,51)
Mounting Footprint
.315 ± .010
(8,00 ± 0,25)
.300 ± .005
(7,62 ± 0,13)
C
.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
.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)
.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
.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
Actuating
Total
Force (oz.)
Travel
.035 ± .015
4 + 4
(0,89 ± 0,38)
– 2
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
Operations
at Rated
Load
250,000
*Complete
Part
Number
39-138 RED
39-138 BLK
Button
Color
Red
Black
Action
Momentary
.312±.005
(7,92±0,13)
ACROSS FLATS
Actuating
Total
Force (oz.)
Travel
.035 ± .015
16 ± 8
(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
Materials and Finishes
ORDERING INFORMATION
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
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
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
CIRCUITRY
ACCESSORIES
SHH1699
SPST N.O.
Accessory
Part Number
30B1012-5
30B1012-8
30B1012-9
30B1012-5
30B1012-8
30B1012-9
SHH1699
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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