The Holder,crystal Unit, cataloged under National Stock Number 5955-00-665-4538, is classified within Federal Supply Class 5955 (Oscillators and Piezoelectric Crystals) of the Electrical and Electronic Equipment Components group. Government technical data includes 10 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5955-00-665-4538 |
| Item Name | Holder,crystal Unit |
| FSC / FSG | 5955 / 59 — Oscillators and Piezoelectric Crystals |
| Status | ACTIVE |
| Mounting Facility Type and Quantity | 1 THREADED STUD(S) SINGLE MOUNTING FACILITY |
| Precious Material | SILVER |
| Accommodated Item Securing Device Type | FRICTION FASTENER |
| Nominal Thread Size | 0.250 INCHES SINGLE MOUNTING FACILITY IN |
| Surface Treatment | SILVER |
| Precious Material and Location | SURFACE SILVER |
| Thread Class | 2A SINGLE MOUNTING FACILITY A |
| Thread Quantity Per Inch | 28 SINGLE MOUNTING FACILITY |
| Material | COPPER ALLOY |
| Thread Series Designator | UNF SINGLE MOUNTING FACILITY |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 302-331ISSUE1 | 3/9 Design control — primary reference Federal Div of Victoreen Instrument Co Inc |
NSN 5955-00-665-4538 is a Holder,crystal Unit, classified under FSC 5955, Oscillators and Piezoelectric Crystals. Status: active.
Key specifications for 5955-00-665-4538: Mounting Facility Type and Quantity: 1 THREADED STUD(S) SINGLE MOUNTING FACILITY; Precious Material: SILVER; Accommodated Item Securing Device Type: FRICTION FASTENER; Nominal Thread Size: 0.250 INCHES SINGLE MOUNTING FACILITY IN. 10 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.
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.