The Switch,lock, cataloged under National Stock Number 5930-01-148-3959, is classified within Federal Supply Class 5930 (Switches) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Belco Industries, Inc. Dba Belco Industries Inc Div Famco Machine Division. Government technical data includes 3 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5930-01-148-3959 |
| Primary Part Number | 9503-3310 |
| Item Name | Switch,lock |
| FSC / FSG | 5930 / 59 — Switches |
| Manufacturer | Belco Industries, Inc. Dba Belco Industries Inc Div Famco Machine Division |
| Status | ACTIVE |
| Inclosure Type | FULLY INCLOSED |
| Body Style | HOLE MOUNTED |
| Terminal Type and Quantity | 4 SCREW |
| 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 |
|---|---|
| 9503-3310 | Siemens Energy and Automation Inc Siemens Furnas Controls Div (USA) |
| 9503-3310 PRIMARY | Belco Industries, Inc. Dba Belco Industries Inc Div Famco Machine Division (USA) |
| 9503-3310 | General Electric Co Accessary Equipment Opn (USA) |
| Reference | Meaning |
|---|---|
| C503-331 | 5/9 Secondary reference Belco Industries, Inc. Dba Belco Industries Inc Div Famco Machine Division |
NSN 5930-01-148-3959 is a Switch,lock, manufactured by Belco Industries, Inc. Dba Belco Industries Inc Div Famco Machine Division, classified under FSC 5930, Switches. Status: active.
NSN 5930-01-148-3959 has 3 manufacturer part numbers on file: 9503-3310 (Siemens Energy and Automation Inc Siemens Furnas Controls Div), 9503-3310 (Belco Industries, Inc. Dba Belco Industries Inc Div Famco Machine Division), 9503-3310 (General Electric Co Accessary Equipment Opn).
Key specifications for 9503-3310: Inclosure Type: FULLY INCLOSED; Body Style: HOLE MOUNTED; Terminal Type and Quantity: 4 SCREW. 3 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.