Model: 121-BB-5

Rotary Switch

Properties:

Overall Length
2.501 inches
Overall Height
1.375 inches
Overall Width
1.375 inches
Shaft Diameter
0.250 inches single actuator
Shaft Length
0.938 inches single actuator
Unthreaded Mounting Hole Diameter
0.138 inches single mounting facility
Individual Section Quantity
1
Longest Horizontal Distance Between Mounting Centers
1.000 inches single mounting facility
Switch Contact Basic Design
Nonpile-up symmetrical
Pole Quantity
2 single section rear
Throw Quantity
5 single section rear
Mounting Method
Bracket single mounting facility
Thready Qty Per Inch (tpi)
32 single mounting facility
Thread Size
0.138 inches single mounting facility
Contact Voltage Rating In Volts
115.0 ac at sea level
Mounting Facility Pattern
Two position in-line single mounting facility
Switch Actuator Indexing Position Quantity
5 single actuator
Shaft Type
Round single actuator
Terminal Type
Turret
Contact Switching Action
Breaks before makes single section rear
Switch Actuator Positioning Increment
30.0 degrees single actuator
Switch Actuator Stop Device Type
Fixed stop single actuator
Contact Load Current Rating
2.0 amperes resistive load ac at sea level
Style Designator
Tap, square frame
Test Data Document
81349-mil-s-3786 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
Unc single mounting facility
NSN
5930-00-907-3190
Part Number
121-BB-5
Description
Switch,rotary
CAGE
28057

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 121-BB-5 NSN 5930-00-907-3190

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

Freight Classification

NMFC
UFC
LTL
LCL
WCC
TCC
SHC
ACC
NMFC:
061300
UFC:
34410
LTL:
77.5
LCL:
--
WCC:
723
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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