The Switch,rotary, cataloged under National Stock Number 5930-00-296-4311, is classified within Federal Supply Class 5930 (Switches) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Comsaco, Llc Dba Comsaco Inc. Government technical data includes 26 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5930-00-296-4311 |
| Primary Part Number | 3SR4B4-2 |
| Item Name | Switch,rotary |
| FSC / FSG | 5930 / 59 — Switches |
| Manufacturer | Comsaco, Llc Dba Comsaco Inc |
| Status | ACTIVE |
| Shaft Type | ROUND, FLATTED SINGLE ACTUATOR |
| Shaft Diameter | 0.375 INCHES NOMINAL SINGLE ACTUATOR IN |
| Switch Contact Basic Design | NONPILE-UP SYMMETRICAL |
| Terminal Type | TAB W/SCREW |
| Mounting Facility Pattern | THREE POSITION CIRCULAR SINGLE MOUNTING FACILITY |
| First Flat Length | 0.500 INCHES NOMINAL SINGLE ACTUATOR IN |
| Mounting Facility Circle Radius | 3.312 INCHES NOMINAL SINGLE MOUNTING FACILITY IN |
| Contact Load Current Rating | 30.0 AMPERES RESISTIVE LOAD DC AT SEA LEVEL |
| Contact Load Current Rating | 30.0 AMPERES RESISTIVE LOAD AC AT SEA LEVEL |
| Mounting Method | BASE SINGLE MOUNTING FACILITY |
| Unthreaded Mounting Hole Diameter | 0.406 INCHES NOMINAL SINGLE MOUNTING FACILITY IN |
| Pole Quantity | 1 EACH SECTION FRONT |
| Switch Actuator Momentary Position | CLOCKWISE AND COUNTERCLOCKWISE SINGLE ACTUATOR |
| Individual Section Quantity | 8 |
| Knob Manufacturer Code | 80064 |
| Features Provided | ACTUATOR KNOB AND METALLIC INCLOSURE |
| Knob Manufacturer Part Number | 9000S6202-74276 |
| Nondefinitive Spec/std Data | 3SR4B4-2 TYPE |
| Contact Switching Action | BREAKS BEFORE MAKES EACH SECTION FRONT |
| Contact Voltage Rating in Volts | 250.0 DC AT SEA LEVEL |
| Contact Voltage Rating in Volts | 500.0 AC AT SEA LEVEL |
| Switch Actuator Positioning Increment | 90.0 DEGREES SINGLE ACTUATOR |
| Switch Actuator Indexing Position Quantity | 4 SINGLE ACTUATOR |
| Flat Height | 0.310 INCHES NOMINAL SINGLE ACTUATOR IN |
| Throw Quantity | 2 EACH SECTION FRONT |
| Hazardous Locations/environmental Protection | WATERTIGHT |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 3SR4B4-2 | Comsaco, Llc Dba Comsaco Inc (USA) |
| Reference | Meaning |
|---|---|
| 3SR4B4-2 | 5/9 Secondary reference L-3 Communications Westwood Corporation Dba Nmp Division Div L3 Westwood Corporation |
| 9000SL202-74276TYPE3SR4B4-2 | 5/9 Secondary reference U.S. Government activity |
| 9000S6202-74276REVBTYPE3SR4B4-2 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5930-00-296-4311 is a Switch,rotary, manufactured by Comsaco, Llc Dba Comsaco Inc, classified under FSC 5930, Switches. Status: active.
NSN 5930-00-296-4311 has 1 manufacturer part number on file: 3SR4B4-2 (Comsaco, Llc Dba Comsaco Inc).
Key specifications for 3SR4B4-2: Shaft Type: ROUND, FLATTED SINGLE ACTUATOR; Overall Height: 7.125 INCHES NOMINAL IN; Shaft Diameter: 0.375 INCHES NOMINAL SINGLE ACTUATOR IN; Switch Contact Basic Design: NONPILE-UP SYMMETRICAL. 26 specifications are documented in the U.S. Government catalog.
Possible hazard — SDS may be required (DLA HMIC P). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.