PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

68-79Crystal Unit,quartz

Bae Systems Information and Electronic Systems Integration Inc. Dba Bae Systems · NSN 5955-00-553-5012 · FSC 5955 · No Item Name Available
Verified by PartsTable
NSN 5955-00-553-5012 — this item is cataloged by the U.S. Government under National Stock Number 5955-00-553-5012. Primary manufacturer part number: 68-79.
Features
  • Crystal Unit,quartz — FSC 5955
  • Overall Thickness: 0.438 INCHES NOMINAL IN
  • Operating Temp Range: +10.0 TO 60.0 CELSIUS DEGC
  • Mode of Oscillation: FUNDAMENTAL
  • Frequency Tolerance for Operating Temp in Percent: -0.020 TO 0.020
  • Terminal Length: 0.469 INCHES NOMINAL IN
  • Specified Frequency: 12.500 MEGAHERTZ
  • Style Designator: RECTANGULAR BODY, PIN TERMINALS
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Crystal Unit,quartz, cataloged under National Stock Number 5955-00-553-5012, 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 Bae Systems Information and Electronic Systems Integration Inc. Dba Bae Systems. Government technical data includes 10 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 11 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5955-00-553-5012
Primary Part Number68-79
Item NameCrystal Unit,quartz
FSC / FSG5955 / 59 — No Item Name Available
ManufacturerBae Systems Information and Electronic Systems Integration Inc. Dba Bae Systems
StatusACTIVE
Overall Thickness0.438 INCHES NOMINAL IN
Operating Temp Range+10.0 TO 60.0 CELSIUS DEGC
Mode of OscillationFUNDAMENTAL
Frequency Tolerance for Operating Temp in Percent-0.020 TO 0.020
Terminal Length0.469 INCHES NOMINAL IN
Specified Frequency12.500 MEGAHERTZ
Style DesignatorRECTANGULAR BODY, PIN TERMINALS
Body Length1.188 INCHES NOMINAL IN
Terminal Diameter0.093 INCHES NOMINAL IN
Center to Center Distance Between Terminals0.486 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 11
1650-00-095-2034 INTERCHANGEABLE
Filter Element,fluid
7530-00-244-4073 INTERCHANGEABLE
Paper,carbon,typewriter
5330-00-245-542417265A INTERCHANGEABLE
Gasket
Brinkley Technology Group Llc Dba Hercules Manufacturing
2530-00-300-0969391347C91 INTERCHANGEABLE
Parts Kit,hydraulic Brake Wheel
Navistar Intl Corp Truck Br Ohio Plant
4730-00-886-8203 INTERCHANGEABLE
Strainer Element,sediment
5960-00-892-0990 INTERCHANGEABLE
Electron Tube
5995-00-962-0487130-54 INTERCHANGEABLE
Wiring Harness,branched
Tabet Manufacturing Company, Inc. Dba Tabet Manufacturing Co Inc
1680-01-107-8563687-9 INTERCHANGEABLE
Seat,aircraft
Ami Industries, Inc Div Utc Aerospace Systems
4920-01-218-55876879 INTERCHANGEABLE
Parts Kit,swager
Eaton Aeroquip Llc Dba Jackson North 1 Div Fluid and Electrical Distribution
2920-01-272-54146879 INTERCHANGEABLE
Lead Set,ignition,engine
Standard Motor Products
Cross-Reference Index
Part NumberManufacturer
68-79 PRIMARY Bae Systems Information and Electronic Systems Integration Inc. Dba Bae Systems (USA)
6879 Inficon Edc Inc. (USA)
Related Parts
1650-00-095-2034INTERCHANGEABLE
FILTER ELEMENT,FLUID
7530-00-244-4073INTERCHANGEABLE
PAPER,CARBON,TYPEWRITER
5330-00-245-5424INTERCHANGEABLE
GASKET
17265A
2530-00-300-0969INTERCHANGEABLE
PARTS KIT,HYDRAULIC BRAKE WHEEL
391347C91
4730-00-886-8203INTERCHANGEABLE
STRAINER ELEMENT,SEDIMENT
5960-00-892-0990INTERCHANGEABLE
ELECTRON TUBE
5995-00-962-0487INTERCHANGEABLE
WIRING HARNESS,BRANCHED
130-54
1680-01-107-8563INTERCHANGEABLE
SEAT,AIRCRAFT
687-9
4920-01-218-5587INTERCHANGEABLE
PARTS KIT,SWAGER
6879
2920-01-272-5414INTERCHANGEABLE
LEAD SET,IGNITION,ENGINE
6879
6685-01-643-8433INTERCHANGEABLE
THERMOCOUPLE,CONTACT
6879

Frequently Asked Questions

What is NSN 5955-00-553-5012?

NSN 5955-00-553-5012 is a Crystal Unit,quartz, manufactured by Bae Systems Information and Electronic Systems Integration Inc. Dba Bae Systems, classified under FSC 5955 (No Item Name Available). Status: active.

What are the part numbers for NSN 5955-00-553-5012?

NSN 5955-00-553-5012 has 2 cross-referenced part numbers: 68-79 (Bae Systems Information and Electronic Systems Integration Inc. Dba Bae Systems), 6879 (Inficon Edc Inc.).

What NSN replaces 5955-00-553-5012?

There are 11 known substitutes for 5955-00-553-5012: 1650-00-095-2034, 7530-00-244-4073, 5330-00-245-5424 and 8 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 68-79?

Key specifications for 68-79: Overall Length: 1.657 INCHES NOMINAL IN; Overall Thickness: 0.438 INCHES NOMINAL IN; Operating Temp Range: +10.0 TO 60.0 CELSIUS DEGC; Mode of Oscillation: FUNDAMENTAL. 12 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com