The Crystal Unit,quartz, cataloged under National Stock Number 5955-01-021-4656, is classified within Federal Supply Class 5955 (Oscillators and Piezoelectric Crystals) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Cts Inc. Government technical data includes 6 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5955-01-021-4656 |
| Primary Part Number | H3W53-5MHZ |
| Item Name | Crystal Unit,quartz |
| FSC / FSG | 5955 / 59 — Oscillators and Piezoelectric Crystals |
| Manufacturer | Cts Inc |
| Status | ACTIVE |
| Frequency Tolerance for Operating Temp in Percent | -0.004 TO 0.004 |
| Mode of Oscillation | THIRD OVERTONE |
| Equivalent Resistance Value in Ohms | 50.0 NOMINAL |
| Style Designator | OVAL BODY, WIRE LEADS |
| Operating Temp Range | -55.0 TO 105.0 CELSIUS DEGC |
| Specified Frequency | 53.500 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 |
|---|---|
| H3W53-5MHZ PRIMARY | Cts Inc (USA) |
| Reference | Meaning |
|---|---|
| H3WCTS53PT5MHZ | C/1 Advisory reference — outside the item-of-supply concept Cts Inc |
| 19050-007 | C/1 Advisory reference — outside the item-of-supply concept Systron-Donner Corp Microwave/instrument Div |
NSN 5955-01-021-4656 is a Crystal Unit,quartz, manufactured by Cts Inc, classified under FSC 5955, Oscillators and Piezoelectric Crystals. Status: active.
NSN 5955-01-021-4656 has 1 manufacturer part number on file: H3W53-5MHZ (Cts Inc).
Key specifications for H3W53-5MHZ: Frequency Tolerance for Operating Temp in Percent: -0.004 TO 0.004; Mode of Oscillation: THIRD OVERTONE; Equivalent Resistance Value in Ohms: 50.0 NOMINAL; Style Designator: OVAL BODY, WIRE LEADS. 6 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.