The Crystal Unit,quartz, cataloged under National Stock Number 5955-00-236-3522, is classified within Federal Supply Class 5955 (Oscillators and Piezoelectric Crystals) of the Electrical and Electronic Equipment Components group. The manufacturer of record is L3 Technologies, Inc. Div L3 Telemetry & Rf Products. Government technical data includes 5 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 5955-00-236-3522 |
| Primary Part Number | 12564E |
| Item Name | Crystal Unit,quartz |
| FSC / FSG | 5955 / 59 — Oscillators and Piezoelectric Crystals |
| Manufacturer | L3 Technologies, Inc. Div L3 Telemetry & Rf Products |
| Status | ACTIVE |
| Terminal Diameter | 0.400 INCHES NOMINAL IN |
| Terminal Length | 0.1585 INCHES NOMINAL IN |
| Overall Thickness | 0.1715 INCHES NOMINAL IN |
| Style Designator | OVAL BODY, PIN TERMINALS |
| Specified Frequency | 31.6555 MEGAHERTZ |
| 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 |
|---|---|
| 12564E PRIMARY | L3 Technologies, Inc. Div L3 Telemetry & Rf Products (USA) |
| Reference | Meaning |
|---|---|
| 12564-5 | 5/1 Secondary reference L3 Technologies, Inc. Div L3 Telemetry & Rf Products |
NSN 5955-00-236-3522 is a Crystal Unit,quartz, manufactured by L3 Technologies, Inc. Div L3 Telemetry & Rf Products, classified under FSC 5955, Oscillators and Piezoelectric Crystals. Status: active.
NSN 5955-00-236-3522 has 1 manufacturer part number on file: 12564E (L3 Technologies, Inc. Div L3 Telemetry & Rf Products).
2 possible matches (shared part number, not a government interchangeability claim): 5815-00-392-1143, 5330-01-532-9718. Verify interchangeability with system specifications before substitution.
Key specifications for 12564E: Terminal Diameter: 0.400 INCHES NOMINAL IN; Terminal Length: 0.1585 INCHES NOMINAL IN; Overall Thickness: 0.1715 INCHES NOMINAL IN; Style Designator: OVAL BODY, PIN TERMINALS. 5 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.