The Crystal Unit,quartz, cataloged under National Stock Number 5955-00-078-4609, is classified within Federal Supply Class 5955 (Oscillators and Piezoelectric Crystals) of the Electrical and Electronic Equipment Components group. Government technical data includes 9 specifications, cited from the U.S. Government catalog. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5955-00-078-4609 |
| Item Name | Crystal Unit,quartz |
| FSC / FSG | 5955 / 59 — Oscillators and Piezoelectric Crystals |
| Status | ACTIVE |
| Terminal Diameter | 0.028 INCHES MINIMUM AND 0.032 INCHES MAXIMUM IN |
| Terminal Length | 0.223 INCHES MINIMUM AND 0.248 INCHES MAXIMUM IN |
| Body Width | 0.725 INCHES MAXIMUM IN |
| Overall Thickness | 0.352 INCHES MAXIMUM IN |
| Style Designator | OVAL BODY, PIN TERMINALS |
| Body Length | 1.526 INCHES MAXIMUM IN |
| Center to Center Distance Between Terminals | 0.478 INCHES MINIMUM AND 0.494 INCHES MAXIMUM IN |
| Specified Frequency | 176.800 KILOHERTZ |
| Body Thickness | 0.317 INCHES MAXIMUM IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 16AS | 5/9 Secondary reference Telephone Systems/communications |
| SM-C-357609-3 | 5/2 Secondary reference U.S. Government activity |
| XL10001-16AS | 5/9 Secondary reference Telephone Systems/communications |
| SM-C-357609-3 | 3/2 Design control — primary reference U.S. Government activity |
| 2041-176-800KC | 5/9 Secondary reference Piezo Crystal Co |
NSN 5955-00-078-4609 is a Crystal Unit,quartz, classified under FSC 5955, Oscillators and Piezoelectric Crystals. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 3120-00-817-9842. Verify interchangeability with system specifications before substitution.
Key specifications for 5955-00-078-4609: Terminal Diameter: 0.028 INCHES MINIMUM AND 0.032 INCHES MAXIMUM IN; Terminal Length: 0.223 INCHES MINIMUM AND 0.248 INCHES MAXIMUM IN; Body Width: 0.725 INCHES MAXIMUM IN; Overall Thickness: 0.352 INCHES MAXIMUM IN. 9 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
NSN 5955-00-078-4609 has DEMIL Code B. Demilitarization may be required before disposal or transfer to non-military entities.
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.