ST40B

View detailed technical data, stock status, and sourcing information for: ST40B
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Federal Supply Group

Electrical and Electronic Equipment Components

Federal Supply Classification

5930 Switches

National Stock Number

5930-00-655-1521

Item Name Code

00184

Assigment Date

01/01/1961 (65 years ago)

A switch which is externally actuated by a lever and whose contacts open and close with an instantaneous (snap) action; includes items having one or more momentary positions. Includes switches (snap action) which use mercury to bridge contacts, and assemblages of complete switches (snap action) having common actuators. Excludes:switch,lever; switch,rotary; switch,knife; switch,sensitive; and switch,box.

bushing mount body style, 2a thread class, driptight hazardous locations/environmental protection, 1.157 inches maximum overall length, 2.238 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.

Thread Class: 2a
Body Style: bushing mount
Hazardous Locations/Environmental Protection: driptight
Overall Length: 1.157 inches maximum
Overall Height: 2.238 inches nominal
Overall Width: 0.641 inches maximum
Bushing Length: 0.470 inches nominal
Body Length: 1.157 inches maximum
Body Width: 0.641 inches maximum
Actuator Style: round
Actuator Diameter: 0.240 inches nominal
Actuator Height: 0.690 inches nominal
Actuator Position-Action Relationship: up position maintained and down position momentary
Maximum Voltage Rating In Volts: 115.0 ac and 28.0 dc
Mounting Surface To Terminal End Distance: 1.078 inches maximum
Inclosure Type: fully inclosed
Mounting Method: threaded bushing
Features Provided: actuator seal
Thread Quantity Per Inch: 32
Nominal Thread Size: 0.468 inches
Nonpile-Up Contact Arrangement: 1 pole, single throw, normally closed, momentary action single switch unit
Contact Load Current Rating At Maximum Rated Voltage: 20.000 amperes resistive dc and 10.000 amperes inductive dc and 5.000 amperes lamp dc and 10.000 amperes resistive ac and 7.000 amperes inductive ac and 2.000 amperes lamp ac
Test Data Document: "81349-mil-dtl-83731 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: uns
Terminal Type And Quantity: 2 tab w/screw
Specification/Standard Data: 96906-ms35058 government standard

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
5930-00-050-2681	No Name Available	06/19/1968
5930-00-417-3444	No Name Available	05/26/1974
5930-00-761-7559	No Name Available	05/27/1968
5930-00-994-7282	No Name Available	07/25/1969

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
11TS11-4	Toggle Switch
123357-001	Toggle Switch
1SR1007-1	Toggle Switch
1SS4406	Toggle Switch
266-3073-00	Toggle Switch
266-3073-000	Toggle Switch
35058XM	Toggle Switch
395-199-006	Toggle Switch
511TS1-4	Toggle Switch
5930006551521	Toggle Switch
5930PL1366474	Toggle Switch
855338	Toggle Switch
8813K17	Toggle Switch
940393	Toggle Switch
B511M36	Toggle Switch
D22840	Toggle Switch
M20000-173	Toggle Switch
MS35058-29	Toggle Switch
ST40B	Toggle Switch

FAQs

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

What is the FSCG of the NSN 5930-00-655-1521?

The FSCG of the NSN 5930-00-655-1521 is 5930

Does the NSN 5930-00-655-1521 have a Schedule B code assigned?

Yes, the Schedule B code is 8536509065

Does NSN 5930-00-655-1521 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 5930-00-655-1521 contain precious materials?

Item does not contain precious metal.

Does NSN 5930-00-655-1521 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 5930-00-655-1521 was assigned to the Federal Catalog?

It was assigned 65 years ago, on Sun, Jan 1, 1961