1-1957ML-4-4NP

View detailed technical data, stock status, and sourcing information for: 1-1957ML-4-4NP
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Federal Supply Group

Electrical and Electronic Equipment Components

Federal Supply Classification

5930 Switches

National Stock Number

5930-01-237-9963

Item Name Code

02134

Assigment Date

08/08/1986 (40 years ago)

0.430 inches nominal single mounting facility thread length, 0.250 inches nominal single actuator first flat length, 2a single mounting facility thread class, 3.250 inches nominal overall 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: 0.430 inches nominal single mounting facility
Hazardous Locations/Environmental Protection: explosion proof
Overall Length: 3.250 inches nominal
First Flat Length: 0.250 inches nominal single actuator
Flat Height: 0.210 inches nominal single actuator
Shaft Diameter: 0.250 inches nominal single actuator
Shaft Length: 0.370 inches nominal single actuator
Overall Diameter: 1.300 inches maximum
Individual Section Quantity: 4
End Item Identification: sonar set an/bqq-5
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: 180.0 degrees from contact position 1 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: 60.0 degrees single actuator
Contact Load Current Rating: 5.0 amperes resistive load ac at sea level
Contact Load Current Rating: 3.0 amperes resistive load and 2.0 amperes inductive load dc at sea level
Style Designator: tap, circular, 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
1-1957ML-4-4NP	Rotary Switch
460-5100405	Rotary Switch

FAQs

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

What is the FSCG of the NSN 5930-01-237-9963?

The FSCG of the NSN 5930-01-237-9963 is 5930

Does the NSN 5930-01-237-9963 have a Schedule B code assigned?

Yes, the Schedule B code is 8536509020

Does NSN 5930-01-237-9963 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 5930-01-237-9963 contain precious materials?

Item does not contain precious metal.

Does NSN 5930-01-237-9963 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 5930-01-237-9963 was assigned to the Federal Catalog?

It was assigned 40 years ago, on Fri, Aug 8, 1986