The Oscillating Group, cataloged under National Stock Number 5955-00-121-2248, is classified within Federal Supply Class 5955 (Oscillators and Piezoelectric Crystals) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Microsemi Corp. - High Performance Timing Dba Vectron International- Cancelled. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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.
| Item Name | Oscillating Group |
| FSC / FSG | 5955 — Oscillators and Piezoelectric Crystals (FSG 59) |
| Manufacturers | Microsemi Corp. - High Performance Timing Dba Vectron International- Cancelled (CAGE 00136); Monitor Products Co. Inc. Dba Monitor Products Co. Inc. (CAGE 54331) |
| Parameter | Value |
|---|---|
| NSN | 5955-00-121-2248 |
| Primary Part Number | MC237C4-002G |
| Item Name | Oscillating Group |
| FSC / FSG | 5955 / 59 — Oscillators and Piezoelectric Crystals |
| Manufacturer | Microsemi Corp. - High Performance Timing Dba Vectron International- Cancelled |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL D — Destroy Item |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | V |
| Part Number | Manufacturer |
|---|---|
| MC237C4-002G PRIMARY | Microsemi Corp. - High Performance Timing Dba Vectron International- Cancelled (USA) |
| 720A PRIMARY | Monitor Products Co. Inc. Dba Monitor Products Co. Inc. (USA) |
| Reference | Meaning |
|---|---|
| 20B00964-1 | 5/9 Secondary reference Murata Erie North America Inc State College Opns |
| C567000011 | 7/2 Vendor item drawing reference U.S. Government activity |
| MC237C4-2 | 5/9 Secondary reference Microsemi Corp. - High Performance Timing Dba Vectron International- Cancelled |
NSN 5955-00-121-2248 is a Oscillating Group, manufactured by Microsemi Corp. - High Performance Timing Dba Vectron International- Cancelled, classified under FSC 5955, Oscillators and Piezoelectric Crystals. Status: active.
NSN 5955-00-121-2248 has 2 manufacturer part numbers on file: MC237C4-002G (Microsemi Corp. - High Performance Timing Dba Vectron International- Cancelled), 720A (Monitor Products Co. Inc. Dba Monitor Products Co. Inc.).
1 possible match (shared part number, not a government interchangeability claim): 6625-00-445-3329. Verify interchangeability with system specifications before substitution.
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 5955-00-121-2248 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.