The Crystal Unit,quartz, cataloged under National Stock Number 5955-00-995-8744, is classified within Federal Supply Class 5955 (Oscillators and Piezoelectric Crystals) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Xsis Electronics Inc. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | Xsis Electronics Inc (CAGE 57051); Raytheon Company (CAGE 00724) |
| Parameter | Value |
|---|---|
| NSN | 5955-00-995-8744 |
| Primary Part Number | 13-49-36R4187B |
| Item Name | Crystal Unit,quartz |
| FSC / FSG | 5955 / 59 — Oscillators and Piezoelectric Crystals |
| Manufacturer | Xsis Electronics Inc |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 13-49-36R4187B PRIMARY | Xsis Electronics Inc (USA) |
| 13-49-36R4187B | Raytheon Company (USA) |
| Reference | Meaning |
|---|---|
| 13-49-36R4187B | 5/9 Secondary reference Microsemi Corp. - High Performance Timing Dba Vectron International- Cancelled |
NSN 5955-00-995-8744 is a Crystal Unit,quartz, manufactured by Xsis Electronics Inc, classified under FSC 5955, Oscillators and Piezoelectric Crystals. Status: active.
NSN 5955-00-995-8744 has 2 manufacturer part numbers on file: 13-49-36R4187B (Xsis Electronics Inc), 13-49-36R4187B (Raytheon Company).
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.