Page 1
Butt Contact Pushbutton Switches
.250 +.010/ –.005
(6,35 + 0,25/ – 0,13)
DIAMETER
A = .175 + .025/ –.020 (4,45 + 0,64/ – 0,51)
B = .125 ± .010 (3,18 ± 0,25)
C = .215 ± .015 (5,46 ± 0,38)
D = .125 ± .010 (3,18 ± 0,25)
.100 ± .010 (2,54 ± 0,25)
.110 ± .005
(2,79 ± 0,13) DIA.
.640 (16,26)
REF.
A
B
C
D
8-40 UNS-2A
THREAD
TERMINALS ARE
.020 (0,50) SQUARE
E.I.A. DATE
CODE LABEL*
*Label increases
nominal diameter
to .255 (6,48)
.250 +.010/ –.005
(6,35 +0,25/ – 0,13)
DIAMETER
A = .175 + .025/ –.020 (4,45 + 0,64/ – 0,51)
B = .125 ± .010 (3,18 ± 0,25)
C = .215 ± .015 (5,46 ± 0,38)
D = .125 ± .010 (3,18 ± 0,25)
.100 ± .010 (2,54 ± 0,25)
.110 ± .005
(2,79 ± 0,13) DIA.
.640 (16,26)
REF.
A
B
C
D
8-40 UNS-2A
THREAD
TERMINALS ARE
.020 (0,50) SQUARE
H = HEX MTG NUT
.219 ± .010 (5,56 ± 0,25)
ACROSS FLATS
.063 ± .010 (1,59 ± 0,25)
THICK
H
E.I.A.
DATE
CODE
LABEL*
*Label increases
nominal diameter
to .255 (6,48)
.110 ± .005
(2,79 ± 0,13) DIA.
.780 (19,81)
REF.
A
B
C
D
.250 +.010/ –.005
(6,35 +0,25/ – 0,13)
DIAMETER
TERMINALS ARE
.020 (0,50) SQUARE
A = .175 + .025/ –.020 (4,45 + 0,64/ – 0,51)
B = .125 ± .010 (3,18 ± 0,25)
C = .355 ± .015 (9,02 ± 0,38)
D = .125 ± .010 (3,18 ± 0,25)
.100 ± .010 (2,54 ± 0,25)
H = HEX MTG NUT
.219 ± .010 (5,56 ± 0,25)
ACROSS FLATS
.063 ± .010 (1,60 ± 0,25)
THICK
8-40 UNS-2A
THREAD
H
E.I.A.
DATE
CODE
LABEL*
*Label increases
nominal diameter
to .255 (6,48)
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
Rating at
28 Vdc
Resistive
150 mA 1,000,000
.035 ± .015
Momentary 4
(0,89 ± 0,38)
Action
Operations
at Rated
Load
*Complete
Part
Number
39-405 RED Red
39-405 BLK Black
Total
Travel
Button
Color
Actuating
Force (oz.)
+ 4
– 2
SPST–Normally Open, with Nut
39-401*
SPST–Normally Open, with Overtravel
39-424*
Rating at
28 Vdc
Resistive
150 mA 1,000,000
Action
.035 ± .015
Momentary 4
(0,89 ± 0,38)
Rating at
28 Vdc
Resistive
150 mA 100,000
Action
Grayhill, Inc. • 561 Hillgrove Avenue • LaGrange, Illinois 60525-5997 • USA • Phone: 708-354-1040 • Fax: 708-354-2820 • www.grayhill.com
.130 ± .025 .015 (0,38)
Momentary 5 ± 3
(3,30 ± 0,64) Min.
Operations
at Rated
Load
Operations
at Rated
Load
Total
Travel
*Complete
Part
Number
39-401 RED Red
39-401 BLK Black
Total
Travel
*Complete
Part
Number
39-424 RED Red
39-424 BLK Black
Over
Travel
Button
Color
Actuating
Force (oz.)
+ 4
– 2
Button
Color
Actuating
Force (oz.)
Page 2
DIMENSIONS in inches (and millimeters)
SQUARE PINS (4)
.100
.050 (1,27)
.110 (2,79)
± .010 (0,25) DIA.
.175 +.025/ –.020
(4,45 +0,64/ – 0,51)
A = .125 ± .010
(3,18 ± 0,25)
.600
(15,24)
REF.
.100 (2,54) REF.
.250 + .010/ –.005
(6,35 + 0,25/ – 0,13) DIA.
A
B
C
.315 ± .010
(8,00 ± 0,25)
.300 ± .005
(7,62 ± 0,13)
.089
(2,26)
MIN.
C = .060 ± .005
(1,52 ± 0,13)
.075 ± .010
(1,91 ± 0,25)
.300 (7,62)
REF.
.050 ± .010
(1,27 ± 0,25)
.140 ± .015
(3,56 ± 0,38)
.200 ± .005
(5,08 ± 0,13)
.050 (1,27)
REF.
B = .215 ± .015
(5,46 ± 0,38)
E.I.A.
DATE
CODE
LABEL*
*Label increases
nominal diameter
to .255 (6,48)
SPST–N.O.
.110 ± .005 DIA.
ACROSS FLATS
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)
TS
Butt Contact Pushbutton Switches
Right Angle, SPST–Normally Open
39-501*
39-503*
SPST–Normally Open, with Panel and Button Seal
39-138*
(2,79 ± 0,13)
A
B
.692 REF
(17,58)
C
.110 ± .005
(2,79 ± 0,13)
.312±.005
(7,92±0,13)
D
#8-40 UNS-2A
THREAD
HEX MTG. NUT
.0625 (1,59) THICK
.218 (5,54) ACROSS FLA
E.I.A. DATE CODE
.020±.002
(,508±,051)
SQUARE TYP
Protective cap
(included with 39-503
RED and 39-503 BLK)
seals switch during
wave soldering.
Mounting Footprint
HOLES FOR
.020 (0,51)
Operations
at Rated
Load
Operations
at Rated
Load
.300
(7,62)
*Complete
Part
Number
39-501 RED Red
39-501 BLK Black
39-503 RED Red
39-503 BLK Black
Total
Travel
*Complete
Part
Number
39-138 RED Red
39-138 BLK Black
Total
Travel
.100 (2,54)
(2,54)
.200
(5,08)
Rating at
28 Vdc
Resistive
150 mA 1,000,000
Action
.035 ± .015
Momentary 4
(0,89 ± 0,38)
Rating at
115 Vac
Resistive
½ Amp 250,000
Action
.035 ± .015
Momentary 16 ± 8
(0,89 ± 0,38)
Button
Color
Actuating
Force (oz.)
+ 4
– 2
Button
Color
Actuating
Force (oz.)
Pushbutton Switches
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). Reow soldering is
not recommended. Contact Grayhill for more
specic details.
CIRCUITRY
Available from your local Grayhill Distributor. For prices and discounts, contact a local Sales Ofce, 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
Materials and Finishes
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; ne 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
ACCESSORIES
SHH1699
30B1012-5
30B1012-8
30B1012-9
ORDERING INFORMATION
Part No. Type & Button Color
39-401 RED N.O., Red
39-401 BLK N.O., Black
39-405 RED N.O., No Nut, Red
39-405 BLK N.O., No Nut, Black
39-424 RED N.O., Overtravel, Red
39-424 BLK N.O., Overtravel, Black
39-501 RED N.O., Right Angle, Red
39-501 BLK N.O., Right Angle, Black
39-503 RED 39-501 Red & Cap Seal
39-503 BLK 39-501 Blk & Cap Seal
39-138 RED 39-351 PC Mount & Seal
39-138 BLK 39-351 PC Mount & Seal
Accessory
Part Number Description
30B1012-5 Red Accessory Cap
30B1012-8 White Accessory Cap
30B1012-9 Black Accessory Cap
SHH1699 Cap Seal Only, Black
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