The Switch Assembly, cataloged under National Stock Number 5930-00-330-3574, is classified within Federal Supply Class 5930 (Switches) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Industrial Research and Development Inc. Government technical data includes 9 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5930-00-330-3574 |
| Primary Part Number | 1RM4-20 |
| Item Name | Switch Assembly |
| FSC / FSG | 5930 / 59 — Switches |
| Manufacturer | Industrial Research and Development Inc |
| Status | ACTIVE |
| Bushing Length | 1.000 INCHES NOMINAL IN |
| Inclosure Type | FULLY INCLOSED |
| Controlling Agency | MICRO SWITCH |
| Inclosure Material | PLASTIC PHENOLIC |
| Mounting Method | BUSHING |
| Identifying Number | V3-1 PART NO. |
| Bushing Diameter | 0.248 INCHES NOMINAL IN |
| Switch Type | SENSITIVE |
| Individual Switch Quantity | 4 |
| 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 |
|---|---|
| 1RM4-20 PRIMARY | Industrial Research and Development Inc (USA) |
| Reference | Meaning |
|---|---|
| 1RM4-20 | 5/9 Secondary reference U.S. Government activity |
| 7AS43 | 5/9 Secondary reference U.S. Government activity |
NSN 5930-00-330-3574 is a Switch Assembly, manufactured by Industrial Research and Development Inc, classified under FSC 5930, Switches. Status: active.
NSN 5930-00-330-3574 has 1 manufacturer part number on file: 1RM4-20 (Industrial Research and Development Inc).
Key specifications for 1RM4-20: Bushing Length: 1.000 INCHES NOMINAL IN; Overall Height: 1.625 INCHES NOMINAL IN; Inclosure Type: FULLY INCLOSED; Controlling Agency: MICRO SWITCH. 9 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.