Frequency Tolerance for Operating Temp in Percent: -0.005 TO 0.005 AND -0.0010 TO 0.0010
Terminal Diameter: 0.094 INCHES NOMINAL IN
Terminal Length: 0.469 INCHES NOMINAL IN
Mode of Oscillation: THIRD OVERTONE AND FIFTH OVERTONE
Overall Thickness: 0.438 INCHES NOMINAL IN
Style Designator: RECTANGULAR BODY, PIN TERMINALS
Identification
NSN: 5955-00-249-0739
NIIN: 002490739
FSC: 5955 — Oscillators and Piezoelectric Crystals
FSG: 59 — Electrical and Electronic Equipment Components
General Description
The Crystal Unit,quartz, cataloged under National Stock Number 5955-00-249-0739, is classified within Federal Supply Class 5955 (Oscillators and Piezoelectric Crystals) of the Electrical and Electronic Equipment Components group. Government technical data includes 11 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 9 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
Technical Specifications
Parameter
Value
NSN
5955-00-249-0739
Item Name
Crystal Unit,quartz
FSC / FSG
5955 / 59 — Oscillators and Piezoelectric Crystals
Status
ACTIVE
Controlled Reference Temp
70.0 CELSIUS DEGC
Frequency Tolerance for Operating Temp in Percent
-0.005 TO 0.005 AND -0.0010 TO 0.0010
Terminal Diameter
0.094 INCHES NOMINAL IN
Terminal Length
0.469 INCHES NOMINAL IN
Mode of Oscillation
THIRD OVERTONE AND FIFTH OVERTONE
Overall Thickness
0.438 INCHES NOMINAL IN
Style Designator
RECTANGULAR BODY, PIN TERMINALS
Body Length
1.125 INCHES NOMINAL IN
Center to Center Distance Between Terminals
0.486 INCHES NOMINAL IN
Operating Temp Range
+65.0 TO 75.0 CELSIUS DEGC
Specified Frequency
15.720 MEGAHERTZ
Lifecycle & Compliance
Acquisition Status
ACTIVE
DEMIL Code
DEMIL Q — CCL Item — Commerce Control List
Hazard
No hazard code in the DLA record (HMIC N)
Criticality Code
X
⇄Related Items9
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
5955-00-250-4299POSSIBLE MATCH
CRYSTAL UNIT,QUARTZ
Possible match (shared part number)
5955-00-250-4304POSSIBLE MATCH
CRYSTAL UNIT,QUARTZ
Possible match (shared part number)
5955-00-250-4307POSSIBLE MATCH
CRYSTAL UNIT,QUARTZ
Possible match (shared part number)
5955-00-250-4308POSSIBLE MATCH
CRYSTAL UNIT,QUARTZ
Possible match (shared part number)
5955-00-250-4309POSSIBLE MATCH
CRYSTAL UNIT,QUARTZ
Possible match (shared part number)
5955-00-250-4310POSSIBLE MATCH
CRYSTAL UNIT,QUARTZ
Possible match (shared part number)
5955-00-250-4311POSSIBLE MATCH
CRYSTAL UNIT,QUARTZ
Possible match (shared part number)
5955-00-256-4509POSSIBLE MATCH
CRYSTAL UNIT,QUARTZ
Possible match (shared part number)
5955-00-256-4511POSSIBLE MATCH
CRYSTAL UNIT,QUARTZ
Possible match (shared part number)
Cross-Reference Index
No manufacturer part numbers on file in the U.S. Government catalog.
Reference documents
Reference
Meaning
RE9347A
3/1Design control — primary reference
U.S. Government activity
Related Parts
5955-00-250-4299POSSIBLE MATCH
CRYSTAL UNIT,QUARTZ
5955-00-250-4304POSSIBLE MATCH
CRYSTAL UNIT,QUARTZ
5955-00-250-4307POSSIBLE MATCH
CRYSTAL UNIT,QUARTZ
5955-00-250-4308POSSIBLE MATCH
CRYSTAL UNIT,QUARTZ
5955-00-250-4309POSSIBLE MATCH
CRYSTAL UNIT,QUARTZ
5955-00-250-4310POSSIBLE MATCH
CRYSTAL UNIT,QUARTZ
5955-00-250-4311POSSIBLE MATCH
CRYSTAL UNIT,QUARTZ
5955-00-256-4509POSSIBLE MATCH
CRYSTAL UNIT,QUARTZ
5955-00-256-4511POSSIBLE MATCH
CRYSTAL UNIT,QUARTZ
Frequently Asked Questions
What is NSN 5955-00-249-0739?
NSN 5955-00-249-0739 is a Crystal Unit,quartz, classified under FSC 5955, Oscillators and Piezoelectric Crystals. Status: active.
What NSN replaces 5955-00-249-0739?
9 possible matches (shared part number, not a government interchangeability claim): 5955-00-250-4299, 5955-00-250-4304, 5955-00-250-4307. Verify interchangeability with system specifications before substitution.
What are the specifications of 5955-00-249-0739?
Key specifications for 5955-00-249-0739: Controlled Reference Temp: 70.0 CELSIUS DEGC; Frequency Tolerance for Operating Temp in Percent: -0.005 TO 0.005 AND -0.0010 TO 0.0010; Terminal Diameter: 0.094 INCHES NOMINAL IN; Terminal Length: 0.469 INCHES NOMINAL IN. 11 specifications are documented in the U.S. Government catalog.
Is NSN 5955-00-249-0739 hazardous material?
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
What is the DEMIL code for NSN 5955-00-249-0739?
NSN 5955-00-249-0739 has DEMIL Code Q. Demilitarization may be required before disposal or transfer to non-military entities.
Sources
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.
✓ Data cited from the U.S. Government catalog; commercial cross-references from OEM and certified industry sources.