51-1921M5-4NC

View detailed technical data, stock status, and sourcing information for: 51-1921M5-4NC
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Federal Supply Group

Electrical and Electronic Equipment Components

Federal Supply Classification

5930 Switches

National Stock Number

5930-00-099-0575

Item Name Code

02134

Assigment Date

12/13/1972 (53 years ago)

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

2a single mounting facility thread class, 0.230 inches minimum and 0.270 inches maximum single actuator first flat length, 3.057 inches minimum and 3.509 inches maximum overall length, 0.417 inches minimum and 0.457 inches maximum single mounting facility thread length, explosion proof hazardous locations/environmental protection

Product Characteristics

Below you’ll find the complete technical specifications and performance data for this part, including material details and compliance information.

Thread Class: 2a single mounting facility
Thread Length: 0.417 inches minimum and 0.457 inches maximum single mounting facility
Hazardous Locations/Environmental Protection: explosion proof
Overall Length: 3.057 inches minimum and 3.509 inches maximum
First Flat Length: 0.230 inches minimum and 0.270 inches maximum single actuator
Flat Height: 0.215 inches minimum and 0.221 inches maximum single actuator
Shaft Diameter: 0.248 inches minimum and 0.251 inches maximum single actuator
Shaft Length: 0.834 inches minimum and 0.914 inches maximum single actuator
Overall Diameter: 1.100 inches minimum and 1.306 inches maximum
Nonturn Device Radius: 0.360 inches minimum and 0.390 inches maximum at 3:00 o'clock
Individual Section Quantity: 5
Nonturn Device Type: tab at 3:00 o'clock
Operating Temp Range: -65.0 to 125.0 celsius
Switch Contact Basic Design: nonpile-up symmetrical
Pole Quantity: 1 each section front
Throw Quantity: 4 each section rear
Mounting Method: threaded bushing single mounting facility
Nominal Thread Size: 0.375 inches single mounting facility
Contact Voltage Rating In Volts: 115.0 ac at sea level
Contact Voltage Rating In Volts: 28.0 dc at sea level
Shaft Flat/Slot Angular Location: 195.0 degrees from nonturn device single actuator
Rotor Through Connection Quantity: 1 each section
Switch Actuator Indexing Position Quantity: 4 single actuator
Shaft Type: round, flatted single actuator
Terminal Type: tab, solder lug
Contact Switching Action: breaks before makes each section rear
Switch Actuator Positioning Increment: 90.0 degrees single actuator
Detent Rotational Torque Range: +1.000 to 4.500 inch-pounds single actuator
Contact Load Current Rating: 1.0 amperes inductive load dc at sea level
Contact Load Current Rating: 2.0 amperes resistive load and 1.0 amperes inductive load ac at sea level
Style Designator: tap, circular, bushing mount
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", "nominal", etc.)."
Thread Series Designator: unef single mounting facility

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
5930-00-630-2073	No Name Available	01/01/1999

Related Parts

This NSN group includes multiple components designed to meet specific performance and operational standards. Each listing provides detailed specs, functionality data, and replacement compatibility information:

Part Number	Name
44H90-05-1-04N	Rotary Switch
44H90-05-1-4N	Rotary Switch
44M90-05-1-04N	Rotary Switch
44M90-05-1-4N	Rotary Switch
4M90E1-5N4C	Rotary Switch
4M90EB1-5N4C	Rotary Switch
51-1921M5-4NC	Rotary Switch
M3786/4-4163	Rotary Switch

FAQs

Find helpful answers about installation, operation, maintenance, compliance, and troubleshooting.

What is the FSCG of the NSN 5930-00-099-0575?

The FSCG of the NSN 5930-00-099-0575 is 5930

Does the NSN 5930-00-099-0575 have a Schedule B code assigned?

Yes, the Schedule B code is 8536509020

Does NSN 5930-00-099-0575 require demilitarization?

"commerce control list items (ccli) - mut to the point of scrap required outside the united states. Inside the united states, mut is required when the demil integrity code (ic) is "3" and mut is not required when the demic is "6" (note 8)"

Does NSN 5930-00-099-0575 contain precious materials?

Precious metal content is unknown

Does NSN 5930-00-099-0575 contain hazardous materials?

Indicates there is no information in the hmirs. The nsn is in a fsc in table ii of fed std 313 and a msds may be required by the user. The requirement for a msds is dependent on a hazard determination of the supplier or the intended end use of item.

When the NSN 5930-00-099-0575 was assigned to the Federal Catalog?

It was assigned 53 years ago, on Wed, Dec 13, 1972