The Switch,rotary, cataloged under National Stock Number 5930-00-548-7948, is classified within Federal Supply Class 5930 (Switches) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Naval Inventory Control Point Mechanicsburg. 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5930-00-548-7948 |
| Primary Part Number | 20SR2B1 |
| Item Name | Switch,rotary |
| FSC / FSG | 5930 / 59 — Switches |
| Manufacturer | Naval Inventory Control Point Mechanicsburg |
| Status | ACTIVE |
| Shaft Type | ROUND, FLATTED SINGLE ACTUATOR |
| Shaft Diameter | 0.625 INCHES NOMINAL SINGLE ACTUATOR IN |
| Switch Contact Basic Design | NONPILE-UP SYMMETRICAL |
| Terminal Type | THREADED STUD |
| Mounting Facility Pattern | FOUR POSITION RECTANGULAR SINGLE MOUNTING FACILITY |
| First Flat Length | 0.875 INCHES NOMINAL SINGLE ACTUATOR IN |
| Contact Load Current Rating | 200.0 AMPERES RESISTIVE LOAD DC AT SEA LEVEL |
| Contact Load Current Rating | 200.0 AMPERES RESISTIVE LOAD AC AT SEA LEVEL |
| Mounting Method | BRACKET(S) AND UNTHREADED HOLE(S) SINGLE MOUNTING FACILITY |
| Unthreaded Mounting Hole Diameter | 0.500 INCHES NOMINAL SINGLE MOUNTING FACILITY IN |
| Style Designator | TAP, CIRCUIT SELECTOR |
| Longest Vertical Distance Between Mounting Centers | 5.625 INCHES NOMINAL SINGLE MOUNTING FACILITY IN |
| Individual Section Quantity | 4 |
| Knob Manufacturer Code | 80064 |
| Features Provided | ACTUATOR KNOB |
| Shaft Length | 1.188 INCHES NOMINAL SINGLE ACTUATOR IN |
| Knob Manufacturer Part Number | 9S5360PC6 |
| Nondefinitive Spec/std Data | 20SR CLASS |
| 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 |
| Test Data Document | 81349-MIL-S-15291 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.). |
| Switch Actuator Positioning Increment | 90.0 DEGREES SINGLE ACTUATOR |
| Switch Actuator Indexing Position Quantity | 4 SINGLE ACTUATOR |
| Flat Height | 0.467 INCHES NOMINAL SINGLE ACTUATOR IN |
| Longest Horizontal Distance Between Mounting Centers | 5.625 INCHES NOMINAL SINGLE MOUNTING FACILITY IN |
| 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 |
|---|---|
| 20SR2B1 | Naval Inventory Control Point Mechanicsburg (USA) |
| Reference | Meaning |
|---|---|
| 20SR2B1 | 5/2 Secondary reference U.S. Government activity |
| 9300 | 5/2 Secondary reference U.S. Government activity |
| 9000S6202-74224TYPE20SR2B1 | 3/2 Design control — primary reference U.S. Government activity |
| 81443VM | 5/9 Secondary reference Cooper Industries Inc Cooper Distribution Equipment Div |
NSN 5930-00-548-7948 is a Switch,rotary, manufactured by Naval Inventory Control Point Mechanicsburg, classified under FSC 5930, Switches. Status: active.
NSN 5930-00-548-7948 has 1 manufacturer part number on file: 20SR2B1 (Naval Inventory Control Point Mechanicsburg).
Key specifications for 20SR2B1: Shaft Type: ROUND, FLATTED SINGLE ACTUATOR; Overall Height: 6.750 INCHES NOMINAL IN; Shaft Diameter: 0.625 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.