The Crystal Unit,quartz, cataloged under National Stock Number 5955-01-042-2440, is classified within Federal Supply Class 5955 (Oscillators and Piezoelectric Crystals) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Raytheon Company Div Rmd Strategic. Government technical data includes 14 specifications, cited from the U.S. Government catalog. The record lists 3 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 5955-01-042-2440 |
| Primary Part Number | 712746-17 |
| Item Name | Crystal Unit,quartz |
| FSC / FSG | 5955 / 59 — Oscillators and Piezoelectric Crystals |
| Manufacturer | Raytheon Company Div Rmd Strategic |
| Status | ACTIVE |
| Frequency Tolerance for Operating Temp in Percent | -0.002 TO 0.002 |
| Terminal Diameter | 0.016 INCHES MINIMUM AND 0.020 INCHES MAXIMUM IN |
| Overall Diameter | 0.370 INCHES MAXIMUM IN |
| Terminal Length | 0.610 INCHES MINIMUM IN |
| Mode of Oscillation | FIFTH OVERTONE |
| Equivalent Resistance Value in Ohms | 60.0 MAXIMUM |
| Style Designator | HAT TYPE, 3 WIRE LEADS |
| Diameter | 0.335 INCHES MAXIMUM IN |
| Drive Level Rating | 1.0 MILLIWATTS NOMINAL |
| Center to Center Distance Between Terminals | 0.192 INCHES MINIMUM AND 0.208 INCHES MAXIMUM IN |
| Circuit Resonance | SERIES RESONANCE |
| Shunt Capacitance in Picofarads | 7.0 MAXIMUM |
| Operating Temp Range | +0.0 TO 70.0 CELSIUS DEGC |
| Specified Frequency | 108.800 MEGAHERTZ |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| K342-17 | Bliley Technologies Inc (USA) |
| 99226-17 | Microsemi Corp. - High Performance Timing Dba Vectron International- Cancelled (USA) |
| 712746-17 PRIMARY | Raytheon Company Div Rmd Strategic (USA) |
| Reference | Meaning |
|---|---|
| 1831-17 | 5/9 Secondary reference Stellant Systems Inc |
NSN 5955-01-042-2440 is a Crystal Unit,quartz, manufactured by Raytheon Company Div Rmd Strategic, classified under FSC 5955, Oscillators and Piezoelectric Crystals. Status: active.
NSN 5955-01-042-2440 has 3 manufacturer part numbers on file: K342-17 (Bliley Technologies Inc), 99226-17 (Microsemi Corp. - High Performance Timing Dba Vectron International- Cancelled), 712746-17 (Raytheon Company Div Rmd Strategic).
2 possible matches (shared part number, not a government interchangeability claim): 5305-01-093-8245, 6685-01-227-5134. Verify interchangeability with system specifications before substitution.
Key specifications for 712746-17: Frequency Tolerance for Operating Temp in Percent: -0.002 TO 0.002; Terminal Diameter: 0.016 INCHES MINIMUM AND 0.020 INCHES MAXIMUM IN; Overall Diameter: 0.370 INCHES MAXIMUM IN; Terminal Length: 0.610 INCHES MINIMUM 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 5955-01-042-2440 has DEMIL Code B. 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.