221781A2

View detailed technical data, stock status, and sourcing information for: 221781A2
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Federal Supply Group

Electrical and Electronic Equipment Components

Federal Supply Classification

5930 Switches

National Stock Number

5930-00-991-3487

Item Name Code

02134

Assigment Date

01/01/1963 (63 years ago)

A resistor whose ohmic value cannot be adjusted or varied. The resistance element consists of either a thin layer of conductive material, containing either binders or insulating materials, deposited on an insulated form; or an alloy of metal and ceramic materials, usually fused to an insulated form. Opposition to the flow of current is an inherent property of the materials used and is manifest by the heat dissipation in the resistor. See also attenuator, fixed and resistor, fixed, composition. Excludes:carbon composition type resistors.

1.688 inches nominal overall length, 2a single mounting facility thread class, 0.375 inches nominal single mounting facility thread length, 0.185 inches minimum and 0.187 inches maximum single actuator width between flats, 1.016 inches maximum overall height

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: 0.375 inches nominal single mounting facility
Width Between Flats: 0.185 inches minimum and 0.187 inches maximum single actuator
Overall Length: 1.688 inches nominal
Overall Height: 1.016 inches maximum
Overall Width: 0.953 inches maximum
First Flat Length: 0.219 inches nominal single actuator
Shaft Diameter: 0.248 inches minimum and 0.250 inches maximum single actuator
Shaft Length: 0.313 inches nominal single actuator
Nonturn Device Radius: 0.375 inches nominal at 3:00 o'clock
Individual Section Quantity: 2
Nonturn Device Type: tab at 3:00 o'clock
Operating Temp Range: -65.0 to 85.0 celsius
Switch Contact Basic Design: nonpile-up symmetrical
Pole Quantity: 3 each section rear
Throw Quantity: 3 each section rear
Mounting Method: threaded bushing w/panel seal single mounting facility
Nominal Thread Size: 0.375 inches single mounting facility
Contact Voltage Rating In Volts: 110.0 ac at sea level
Contact Voltage Rating In Volts: 28.0 dc at sea level
Shaft Flat/Slot Angular Location: 150.0 degrees from nonturn device single actuator
Switch Actuator Indexing Position Quantity: 3 single actuator
Shaft Type: round, parallel flatted, threaded hole single actuator
Terminal Type: clip
Contact Switching Action: breaks before makes each section rear
Switch Actuator Positioning Increment: 30.0 degrees single actuator
Switch Actuator Stop Device Type: fixed-adjustable stops single actuator
Contact Load Current Rating: 1.0 amperes resistive load ac at sea level
Contact Load Current Rating: 2.0 amperes resistive load dc at sea level
Precious Material And Location: clips and rotor blades silver
Precious Material: silver
Style Designator: circular wafer, bushing mount
Thread Series Designator: unef single mounting facility

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
221781A2	Rotary Switch
259-1573-00	Rotary Switch
259-1573-000	Rotary Switch
575-285909	Rotary Switch

FAQs

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

What is the FSCG of the NSN 5930-00-991-3487?

The FSCG of the NSN 5930-00-991-3487 is 5930

Does the NSN 5930-00-991-3487 have a Schedule B code assigned?

Yes, the Schedule B code is 8536509020

Does NSN 5930-00-991-3487 require demilitarization?

Items subject to the export administration regulations (ear) in parts 730-774 of title 15, code of federal regulations (cfr) (ccli or ear99) and determined by dod to present a low risk when released out of dod control. No demil, mut, or end use certificate is required. May require an export licensefrom doc.

Does NSN 5930-00-991-3487 contain precious materials?

Item contains silver.

Does NSN 5930-00-991-3487 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 5930-00-991-3487 was assigned to the Federal Catalog?

It was assigned 63 years ago, on Tue, Jan 1, 1963