4AC21

View detailed technical data, stock status, and sourcing information for: 4AC21
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Federal Supply Group

Electrical and Electronic Equipment Components

Federal Supply Classification

5930 Switches

National Stock Number

5930-00-683-4958

Item Name Code

00399

Assigment Date

01/01/1963 (63 years ago)

A switch with a quick-acting mechanism actuated by a highly delicate tactile contact. It may include a timer function. Includes membrane switch. Excludes: switch,flexible; switch,pressure; and switch,thermostatic.

hole mounted body style, corrosion resistant and salt spray resistant hazardous locations/environmental protection, 0.516 inches nominal overall width, 2.626 inches nominal overall length, 1.953 inches nominal overall height

Product Characteristics

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

Body Style: hole mounted
Hazardous Locations/Environmental Protection: corrosion resistant and salt spray resistant
Overall Length: 2.626 inches nominal
Overall Height: 1.953 inches nominal
Overall Width: 0.516 inches nominal
Body Length: 1.594 inches nominal
Body Width: 0.516 inches nominal
Body Height: 2.094 inches nominal
Unthreaded Mounting Hole Diameter: 0.141 inches nominal
Center To Center Distance Between Mounting Facilities Parallel To Height: 1.812 inches nominal
Actuator Style: round
Actuator Diameter: 0.250 inches nominal
Actuator Height: 0.359 inches nominal
Actuator Free Position Height: 0.359 inches nominal
Maximum Voltage Rating In Volts: 250.0 ac and 30.0 dc
Inclosure Type: fully inclosed
Mounting Method: unthreaded hole
Nonpile-Up Contact Arrangement: 2 pole, double throw, one position momentary single switch unit
Switch Release Force: 4.0 ounces minimum
Switch Actuating Force: 18.0 ounces maximum
Contact Load Current Rating At Maximum Rated Voltage: 10.000 amperes resistive dc and 6.000 amperes inductive dc and 10.000 amperes resistive ac
Terminal Type And Quantity: 6 screw

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
5930-00-919-7185	No Name Available	05/29/1968

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
1002967	Sensitive Switch
1857236	Sensitive Switch
1857236REVA	Sensitive Switch
4AC21	Sensitive Switch
611710	Sensitive Switch

FAQs

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

What is the FSCG of the NSN 5930-00-683-4958?

The FSCG of the NSN 5930-00-683-4958 is 5930

Does the NSN 5930-00-683-4958 have a Schedule B code assigned?

Yes, the Schedule B code is 8536509050

Does NSN 5930-00-683-4958 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 5930-00-683-4958 contain precious materials?

Precious metal content is unknown

Does NSN 5930-00-683-4958 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 5930-00-683-4958 was assigned to the Federal Catalog?

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