The Oscillator,crystal Controlled, cataloged under National Stock Number 5955-01-129-4701, is classified within Federal Supply Class 5955 (Oscillators and Piezoelectric Crystals) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Rockwell Collins, Inc. Dba Rc Displays Systems. Government technical data includes 14 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5955-01-129-4701 |
| Primary Part Number | PC73644-1 |
| Item Name | Oscillator,crystal Controlled |
| FSC / FSG | 5955 / 59 — Oscillators and Piezoelectric Crystals |
| Manufacturer | Rockwell Collins, Inc. Dba Rc Displays Systems |
| Status | ACTIVE |
| Circuit Construction Type | SOLID STATE |
| Average Life Rating | 1000.0 |
| Inclosure Type | ENCASED |
| Overall Diameter | 0.365 INCHES MAXIMUM IN |
| Frequency Per Channel | 4.0 MEGAHERTZ NOMINAL OUTPUT CHANNEL |
| Criticality Code Justification | FEAT |
| Connection Type | PIN THERMAL BOTTOM |
| Connection Contact Type and Quantity | 8 PIN EXTERNAL |
| Basic Shape Style | CYLINDRICAL |
| Identification Designator | PC73644-1-09344 |
| Average Life Measurement | HOURS |
| Environmental Protection | FUNGUS PROOF |
| Operating Temp Range | -55.0 TO 125.0 CELSIUS DEGC |
| Installation Design | MODULE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL D — Destroy Item |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | Y |
| Part Number | Manufacturer |
|---|---|
| PC73644-1 PRIMARY | Rockwell Collins, Inc. Dba Rc Displays Systems (USA) |
| QT1T10M-4.000000MHZ | Q-Tech Corp Dba Q-Tech Corp (USA) |
| Reference | Meaning |
|---|---|
| 7150-002 | 5/9 Secondary reference Spectrum Technology Inc |
| 10132996 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
NSN 5955-01-129-4701 is a Oscillator,crystal Controlled, manufactured by Rockwell Collins, Inc. Dba Rc Displays Systems, classified under FSC 5955, Oscillators and Piezoelectric Crystals. Status: active.
NSN 5955-01-129-4701 has 2 manufacturer part numbers on file: PC73644-1 (Rockwell Collins, Inc. Dba Rc Displays Systems), QT1T10M-4.000000MHZ (Q-Tech Corp Dba Q-Tech Corp).
2 possible matches (shared part number, not a government interchangeability claim): 4510-01-393-7974, 4510-01-393-7979. Verify interchangeability with system specifications before substitution.
Key specifications for PC73644-1: Circuit Construction Type: SOLID STATE; Average Life Rating: 1000.0; Inclosure Type: ENCASED; Overall Diameter: 0.365 INCHES MAXIMUM IN. 14 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 5955-01-129-4701 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.