The Switch,rotary, cataloged under National Stock Number 5930-01-178-8323, is classified within Federal Supply Class 5930 (Switches) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Muirhead Aerospace Ltd. Government technical data includes 29 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5930-01-178-8323 |
| Primary Part Number | 70720 |
| Item Name | Switch,rotary |
| FSC / FSG | 5930 / 59 — Switches |
| Manufacturer | Muirhead Aerospace Ltd |
| 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 |
| Overall Diameter | 0.781 INCHES NOMINAL IN |
| First Flat Length | 0.250 INCHES NOMINAL SINGLE ACTUATOR IN |
| Precious Material | SILVER |
| Rotor Through Connection Quantity | 2 SINGLE SECTION |
| Contact Load Current Rating | 125.0 MILLIAMPERES RESISTIVE LOAD DC AT SEA LEVEL |
| Contact Load Current Rating | 75.0 MILLIAMPERES RESISTIVE LOAD AC AT SEA LEVEL |
| Mounting Method | THREADED BUSHING WITH PANEL SEAL SINGLE MOUNTING FACILITY |
| Thread Length | 0.312 INCHES NOMINAL SINGLE MOUNTING FACILITY IN |
| Pole Quantity | 2 SINGLE SECTION FRONT |
| Style Designator | TAP, CIRCULAR, BUSHING MOUNT |
| Switch Actuator Momentary Position | CLOCKWISE AND COUNTERCLOCKWISE SINGLE ACTUATOR |
| 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 | 0.375 INCHES NOMINAL SINGLE ACTUATOR IN |
| Switch Actuator Stop Device Type | ADJUSTABLE STOP SINGLE ACTUATOR |
| Contact Switching Action | BREAKS BEFORE MAKES 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 | CONTACT AND TERMINAL SURFACES SILVER |
| Operating Temp Range | -65.0 TO 85.0 CELSIUS DEGC |
| Thread Class | 2A SINGLE MOUNTING FACILITY A |
| Switch Actuator Positioning Increment | 30.0 DEGREES SINGLE ACTUATOR |
| Switch Actuator Indexing Position Quantity | 3 SINGLE ACTUATOR |
| 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 |
|---|---|
| 70720 PRIMARY | Muirhead Aerospace Ltd (GBR) |
| Reference | Meaning |
|---|---|
| PL70225 ITEM S1 | C/1 Advisory reference — outside the item-of-supply concept Muirhead Aerospace Ltd |
| 5930PL0710492 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
| 09MY23884 | 5/2 Secondary reference U.S. Government activity |
NSN 5930-01-178-8323 is a Switch,rotary, manufactured by Muirhead Aerospace Ltd, classified under FSC 5930, Switches. Status: active.
NSN 5930-01-178-8323 has 1 manufacturer part number on file: 70720 (Muirhead Aerospace Ltd).
1 possible match (shared part number, not a government interchangeability claim): 5330-01-290-9982. Verify interchangeability with system specifications before substitution.
Key specifications for 70720: 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. 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.