The Crystal Unit,quartz, cataloged under National Stock Number 5955-01-232-1565, is classified within Federal Supply Class 5955 (Oscillators and Piezoelectric Crystals) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Wenzel International Inc Div Croven Crystals. The record lists 2 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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.
| Item Name | Crystal Unit,quartz |
| FSC / FSG | 5955 — Oscillators and Piezoelectric Crystals (FSG 59) |
| Manufacturers | Wenzel International Inc Div Croven Crystals (CAGE 00809); Ultra Electronics Maritime Systems Inc Div Subsidiary of Ultra Electronics Holdings Limited (CAGE 36180) |
| Parameter | Value |
|---|---|
| NSN | 5955-01-232-1565 |
| Primary Part Number | SM-B-597020-3 |
| Item Name | Crystal Unit,quartz |
| FSC / FSG | 5955 / 59 — Oscillators and Piezoelectric Crystals |
| Manufacturer | Wenzel International Inc Div Croven Crystals |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL D — Destroy Item |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| SM-B-597020-3 | Wenzel International Inc Div Croven Crystals (CAN) |
| 025-597-020-003 | Ultra Electronics Maritime Systems Inc Div Subsidiary of Ultra Electronics Holdings Limited (CAN) |
| Reference | Meaning |
|---|---|
| SM-B-597020-3 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5955-01-232-1565 is a Crystal Unit,quartz, manufactured by Wenzel International Inc Div Croven Crystals, classified under FSC 5955, Oscillators and Piezoelectric Crystals. Status: active.
NSN 5955-01-232-1565 has 2 manufacturer part numbers on file: SM-B-597020-3 (Wenzel International Inc Div Croven Crystals), 025-597-020-003 (Ultra Electronics Maritime Systems Inc Div Subsidiary of Ultra Electronics Holdings Limited).
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 5955-01-232-1565 has DEMIL Code D. 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.