The Switch,rotary, cataloged under National Stock Number 5930-00-490-5198, is classified within Federal Supply Class 5930 (Switches) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Shallco, Inc. Government technical data includes 29 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5930-00-490-5198 |
| Primary Part Number | 9503-2 |
| Item Name | Switch,rotary |
| FSC / FSG | 5930 / 59 — Switches |
| Manufacturer | Shallco, Inc |
| Status | ACTIVE |
| Shaft Type | ROUND, FLATTED SINGLE ACTUATOR |
| Shaft Diameter | 0.125 INCHES NOMINAL SINGLE ACTUATOR IN |
| Switch Contact Basic Design | NONPILE-UP SYMMETRICAL |
| Terminal Type | TAB, SOLDER LUG AND TURRET |
| Overall Diameter | 0.500 INCHES NOMINAL IN |
| First Flat Length | 0.250 INCHES NOMINAL SINGLE ACTUATOR IN |
| Precious Material | GOLD |
| Contact Load Current Rating | 150.0 MILLIAMPERES RESISTIVE LOAD AC AT SEA LEVEL |
| Contact Load Current Rating | 200.0 MILLIAMPERES RESISTIVE LOAD AND 30.0 MILLIAMPERES INDUCTIVE LOAD AND 100.0 MILLIAMPERES LAMP LOAD DC AT SEA LEVEL |
| Mounting Method | THREADED BUSHING SINGLE MOUNTING FACILITY |
| Thread Length | 0.219 INCHES NOMINAL SINGLE MOUNTING FACILITY IN |
| Pole Quantity | 1 SINGLE SECTION REAR |
| Style Designator | SNAP OR LINE |
| Individual Section Quantity | 1 |
| Nonturn Device Type | FLATTED BUSHING AT 3:00 OCLOCK |
| Nonturn Device Type | FLATTED BUSHING AT 9:00 OCLOCK |
| Nominal Thread Size | 0.250 INCHES SINGLE MOUNTING FACILITY IN |
| Shaft Length | 1.344 INCHES NOMINAL SINGLE ACTUATOR IN |
| Switch Actuator Stop Device Type | FIXED STOP SINGLE ACTUATOR |
| Contact Switching Action | MAKES BEFORE BREAKS SINGLE SECTION REAR |
| Contact Voltage Rating in Volts | 115.0 AC AT SEA LEVEL |
| Contact Voltage Rating in Volts | 28.0 DC AT SEA LEVEL |
| Precious Material and Location | COMMON RING AND TERMINAL SURFACES GOLD |
| Thread Class | 2A SINGLE MOUNTING FACILITY A |
| Switch Actuator Positioning Increment | 36.0 DEGREES SINGLE ACTUATOR |
| Switch Actuator Indexing Position Quantity | 2 SINGLE ACTUATOR |
| Thread Series Designator | UNF SINGLE MOUNTING FACILITY |
| Flat Height | 0.094 INCHES NOMINAL SINGLE ACTUATOR IN |
| Throw Quantity | 2 SINGLE SECTION REAR |
| 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 |
|---|---|
| 9503-2 | Shallco, Inc (USA) |
| SPEC 9503-2 | Shallco, Inc (USA) |
| Reference | Meaning |
|---|---|
| 18KM2 | 5/9 Secondary reference Meggitt (new Hampshire), Inc |
| 700158 | 3/2 Design control — primary reference U.S. Government activity |
| 50YY2307-1-2S | 5/9 Secondary reference U.S. Government activity |
| 9503-2 | 5/9 Secondary reference Meggitt (new Hampshire), Inc |
| 18KM2 | 5/9 Secondary reference Shallco, Inc |
NSN 5930-00-490-5198 is a Switch,rotary, manufactured by Shallco, Inc, classified under FSC 5930, Switches. Status: active.
NSN 5930-00-490-5198 has 2 manufacturer part numbers on file: 9503-2 (Shallco, Inc), SPEC 9503-2 (Shallco, Inc).
3 possible matches (shared part number, not a government interchangeability claim): 3030-01-069-1145, 6110-01-173-7506, 5340-01-283-4111. Verify interchangeability with system specifications before substitution.
Key specifications for 9503-2: Shaft Type: ROUND, FLATTED SINGLE ACTUATOR; Shaft Diameter: 0.125 INCHES NOMINAL SINGLE ACTUATOR IN; Switch Contact Basic Design: NONPILE-UP SYMMETRICAL; Terminal Type: TAB, SOLDER LUG AND TURRET. 29 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.