Model: 3721LK

Rotary Switch

Special Features:

Part number 10180341 is a selected item dwg

Properties:

Thread Class
2a single mounting facility
Thread Length
0.375 inches single mounting facility
Overall Length
1.688 inches
Overall Height
1.188 inches
Overall Width
1.188 inches
First Flat Length
0.218 inches single actuator
Flat Height
0.216 inches single actuator
Shaft Diameter
0.250 inches single actuator
Shaft Length
0.750 inches single actuator
Individual Section Quantity
1
Nonturn Device Type
Slotted bushing at 12: 00 o'clock
Operating Tempurature Range
-65.0/+125.0 degrees celsius
Switch Contact Basic Design
Nonpile-up symmetrical
Pole Quantity
2 single section rear
Throw Quantity
3 single section front
Mounting Method
Threaded bushing single mounting facility
Thread Size
0.375 inches single mounting facility
Contact Voltage Rating In Volts
125.0 ac at sea level
Contact Voltage Rating In Volts
28.0 dc at sea level
Shaft Flat/slot Angular Location
180.0 degrees from contact position 1 single actuator
Rotor Through Connection Quantity
2 single section
Switch Actuator Indexing Position Quantity
3 single actuator
Shaft Type
Round, flatted single actuator
Terminal Type
Tab, solder lug
Contact Switching Action
Breaks before makes single section front
Switch Actuator Positioning Increment
30.0 degrees single actuator
Switch Actuator Stop Device Type
Fixed stop single actuator
Contact Load Current Rating
500.0 milliamperes resistive load ac at sea level
Contact Load Current Rating
500.0 milliamperes resistive load dc at sea level
Style Designator
Square wafer, panel mount
Test Data Document
81349-mil-s-3786/8 specification (includes engineering type bulletins, brochures, etc., that reflect specification type data in specification format; excludes commercial catalogs, industry directories, and similar trade publications, reflecting general type data on certain environmental and performance requirements and test conditions that are shown as "typical", "average", "", etc.).
Thread Series Designator
Unef single mounting facility
NSN
5930-00-256-8420
Part Number
3721LK
Description
Switch,rotary
CAGE
82121

A switch actuated by a definite angular rotation of the switch shaft about its axis. For items having rated actuation travel and pressure characteristics, see switch, sensitive. Excludes relay, rotary; switch, stepping; and switch, telephone (as modified).

Part 3721LK NSN 5930-00-256-8420

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
02134
FIIG:
A052B0
Concept No.:
1
App. Key:
A
Cond. Code:
1
Status:
A

Material Classification

Hazardous material, precious metals, criticality, enviroment, and electrostatic discharge indicators
HMIC
PMIC
ESD/EMI
ENAC
MMAC
CRITL
HMIC:
P
PMIC:
U
ESD:
ESD:
MMAC:
CRITL:
X

Packaging & Shipping

Est. Pack Size
Est. Pack Weight
Est. Item Weight
Est. Item Dim.
Pack Size:
--
Paclk Weight:
0.1000lbs
Item Weight:
--
Item Dim:
--
OPI
SPI No.
SPI Rev.
SPC Mkg.
LVL A
LVL B
OPI:
O
SPI No.:
SPI Rev.:
SPC Mkg:
00
LVL_A:
Q
LVL_B:
Q

Freight Classification

NMFC
UFC
LTL
LCL
WCC
TCC
SHC
ACC
NMFC:
061300
UFC:
34410
LTL:
77.5
LCL:
--
WCC:
72D
TCC:
Z
SHC:
9
ACC:
Instruments/Radio

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Schedule B and Export
  • Schedule B: 8536509020
  • SITC: 77255
  • End Use: Electric apparatus
  • NAICS: 335931
  • USDA: 1

Freight Class: Switches, rotary, rated at not over 5 a, for a voltage not exceeding 1,000 v

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