PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

91804-1Crystal Unit,quartz

Drs Signal Solutions, Inc. · NSN 5955-00-838-4081 · FSC 5955 · No Item Name Available
Verified by PartsTable
NSN 5955-00-838-4081 — this item is cataloged by the U.S. Government under National Stock Number 5955-00-838-4081. Primary manufacturer part number: 91804-1.
Features
  • Crystal Unit,quartz — FSC 5955
  • Mode of Oscillation: FUNDAMENTAL
  • Body Thickness: 0.317 INCHES MAXIMUM IN
  • Body Length: 0.775 INCHES MAXIMUM IN
  • Circuit Resonance: ANTIRESONANCE
  • Drive Level Rating: 8.0 MILLIWATTS MINIMUM AND 12.0 MILLIWATTS MAXIMUM
  • Style Designator: OVAL BODY, PIN TERMINALS
  • Center to Center Distance Between Terminals: 0.478 INCHES MINIMUM AND 0.494 INCHES MAXIMUM IN
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Crystal Unit,quartz, cataloged under National Stock Number 5955-00-838-4081, is classified within Federal Supply Class 5955 (No Item Name Available) of the Electrical and Electronic Equipment Components group. The primary manufacturer of record is Drs Signal Solutions, Inc.. Government technical data includes 18 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5955-00-838-4081
Primary Part Number91804-1
Item NameCrystal Unit,quartz
FSC / FSG5955 / 59 — No Item Name Available
ManufacturerDrs Signal Solutions, Inc.
StatusCANCELLED
Mode of OscillationFUNDAMENTAL
Body Thickness0.317 INCHES MAXIMUM IN
Body Length0.775 INCHES MAXIMUM IN
Circuit ResonanceANTIRESONANCE
Drive Level Rating8.0 MILLIWATTS MINIMUM AND 12.0 MILLIWATTS MAXIMUM
Style DesignatorOVAL BODY, PIN TERMINALS
Center to Center Distance Between Terminals0.478 INCHES MINIMUM AND 0.494 INCHES MAXIMUM IN
Equivalent Resistance Value in Ohms575.0 MAXIMUM
Center to Center Distance Between Terminals0.494 INCHES MAXIMUM IN
Frequency Tolerance for Operating Temp in Percent-0.005 TO 0.005
Operating Temp Range-55.0 TO 105.0 CELSIUS DEGC
Specified Frequency1.000 MEGAHERTZ
Load Capacitance in Picofarads31.5 MINIMUM AND 32.5 MAXIMUM
Terminal Diameter0.048 INCHES MINIMUM AND 0.052 INCHES MAXIMUM IN
Terminal Length0.223 INCHES MINIMUM AND 0.248 INCHES MAXIMUM IN
Shunt Capacitance in Picofarads7.0 MAXIMUM
Body Width0.725 INCHES MAXIMUM IN
Overall Thickness0.352 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 1
5340-01-449-7494L6-3 INTERCHANGEABLE
Clamp,synchro
Roller Bearing Co of America, Inc Div Pic Design
Cross-Reference Index
Part NumberManufacturer
91804-1 PRIMARY Drs Signal Solutions, Inc. (USA)
91804-1 Microsemi Corp. - High Performance Timing Dba Vectron International- Cancelled (USA)
91804-1 Piezo Crystal Co (USA)
91804-1 Inficon Edc Inc. (USA)
Related Parts
5340-01-449-7494INTERCHANGEABLE
CLAMP,SYNCHRO
L6-3

Frequently Asked Questions

What is NSN 5955-00-838-4081?

NSN 5955-00-838-4081 is a Crystal Unit,quartz, manufactured by Drs Signal Solutions, Inc., classified under FSC 5955 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5955-00-838-4081?

NSN 5955-00-838-4081 has 4 cross-referenced part numbers: 91804-1 (Drs Signal Solutions, Inc.), 91804-1 (Microsemi Corp. - High Performance Timing Dba Vectron International- Cancelled), 91804-1 (Piezo Crystal Co), 91804-1 (Inficon Edc Inc.).

What NSN replaces 5955-00-838-4081?

There is 1 known substitute for 5955-00-838-4081: 5340-01-449-7494. Verify interchangeability with system specifications before substitution.

What are the specifications of 91804-1?

Key specifications for 91804-1: Mode of Oscillation: FUNDAMENTAL; Body Thickness: 0.317 INCHES MAXIMUM IN; Body Length: 0.775 INCHES MAXIMUM IN; Circuit Resonance: ANTIRESONANCE. 20 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5955-00-838-4081 still in active supply?

NSN 5955-00-838-4081 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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