PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

CR133/U100M1000Crystal Unit,quartz

Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M · NSN 5955-00-928-1521 · FSC 5955 · No Item Name Available
Verified by PartsTable
NSN 5955-00-928-1521 — this item is cataloged by the U.S. Government under National Stock Number 5955-00-928-1521. Primary manufacturer part number: CR133/U100M1000.
Features
  • Crystal Unit,quartz — FSC 5955
  • Mode of Oscillation: FIFTH OVERTONE AND THIRD OVERTONE
  • Terminal Diameter: 0.038 INCHES MINIMUM AND 0.042 INCHES MAXIMUM IN
  • Body Length: 0.530 INCHES MAXIMUM IN
  • Terminal Length: 0.223 INCHES MINIMUM AND 0.248 INCHES MAXIMUM IN
  • Material: GLASS COVER HOLDER
  • Equivalent Resistance Value in Ohms: 60.0 MAXIMUM
  • Test Data Document: 81349-MIL-C-3098/38 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DATA IN SPECIFICATION FORMAT; EXCLUDES COMMERCIAL CATALOGS, INDUSTRY DIRECTORIES, AND SIMILAR TRADE PUBLICATIONS, REFLECTING GENERAL TYPE DATA ON CERTAIN ENVIRONMENTAL AND PERFORMANCE REQUIREMENTS AND TEST CONDITIONS THAT ARE SHOWN AS "TYPICAL", "AVERAGE", "NOMINAL", ETC.).
Applications
  • Applications requiring Glass Cover Holder construction
General Description

The Crystal Unit,quartz, cataloged under National Stock Number 5955-00-928-1521, 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 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M. Government technical data includes 17 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 7 commercial cross-references from 6 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5955-00-928-1521
Primary Part NumberCR133/U100M1000
Item NameCrystal Unit,quartz
FSC / FSG5955 / 59 — No Item Name Available
ManufacturerMilitary Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
StatusACTIVE
Mode of OscillationFIFTH OVERTONE AND THIRD OVERTONE
Terminal Diameter0.038 INCHES MINIMUM AND 0.042 INCHES MAXIMUM IN
Body Length0.530 INCHES MAXIMUM IN
Terminal Length0.223 INCHES MINIMUM AND 0.248 INCHES MAXIMUM IN
MaterialGLASS COVER HOLDER
Equivalent Resistance Value in Ohms60.0 MAXIMUM
Test Data Document81349-MIL-C-3098/38 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DATA IN SPECIFICATION FORMAT; EXCLUDES COMMERCIAL CATALOGS, INDUSTRY DIRECTORIES, AND SIMILAR TRADE PUBLICATIONS, REFLECTING GENERAL TYPE DATA ON CERTAIN ENVIRONMENTAL AND PERFORMANCE REQUIREMENTS AND TEST CONDITIONS THAT ARE SHOWN AS "TYPICAL", "AVERAGE", "NOMINAL", ETC.).
Style DesignatorROUND BODY, FERRULE TERMINALS
Drive Level Rating1.6 MILLIWATTS MINIMUM AND 2.4 MILLIWATTS MAXIMUM
Frequency Tolerance for Operating Temp in Percent-0.006 TO 0.006
Specified Frequency100.100 MEGAHERTZ
Center to Center Distance Between Terminals0.184 INCHES MINIMUM AND 0.200 INCHES MAXIMUM IN
Overall Thickness0.185 INCHES MAXIMUM IN
Shunt Capacitance in Picofarads5.5 MINIMUM AND 7.5 MAXIMUM
Operating Temp Range-55.0 TO 150.0 CELSIUS DEGC
Specification/standard Data81349-MIL-C-3098/112 GOVERNMENT SPECIFICATION
Circuit ResonanceSERIES RESONANCE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5330-00-311-795845775-259-05 INTERCHANGEABLE
Gasket
Terex Usa, Llc Dba Terex Equipment Services
5315-00-811-9214A1-13 INTERCHANGEABLE
Pin,straight,headless
Roller Bearing Co of America, Inc Div Pic Design
4410-00-929-8725G2-1-1 INTERCHANGEABLE
Gage,burner Setting
Todd Combustion Inc
5940-01-161-2984 INTERCHANGEABLE
Terminal,casualty Power
5955-01-179-8636 INTERCHANGEABLE
Crystal Unit,quartz
5955-01-192-0001 INTERCHANGEABLE
Crystal Unit,quartz
5955-01-221-1727 INTERCHANGEABLE
Crystal Unit,quartz
5955-01-221-1728 INTERCHANGEABLE
Crystal Unit,quartz
5955-01-221-1729 INTERCHANGEABLE
Crystal Unit,quartz
5955-01-221-1731 INTERCHANGEABLE
Crystal Unit,quartz
Cross-Reference Index
Part NumberManufacturer
CR133/U100M1000 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
8537694-1 Cts Inc (USA)
G21-1 Microsemi Corp. - High Performance Timing Dba Vectron International- Cancelled (USA)
MIL-C-3098/112 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
8537694-1 S. W. Electronics & Manufacturing Corp. Dba Swemco (USA)
8537694-1 Piezo Crystal Co (USA)
8537694-1 Lockheed Martin Corporation Dba Lockheed Martin Div Lockheed Martin (USA)
Related Parts
5330-00-311-7958INTERCHANGEABLE
GASKET
45775-259-05
5315-00-811-9214INTERCHANGEABLE
PIN,STRAIGHT,HEADLESS
A1-13
4410-00-929-8725INTERCHANGEABLE
GAGE,BURNER SETTING
G2-1-1
5940-01-161-2984INTERCHANGEABLE
TERMINAL,CASUALTY POWER
5955-01-179-8636INTERCHANGEABLE
CRYSTAL UNIT,QUARTZ
5955-01-192-0001INTERCHANGEABLE
CRYSTAL UNIT,QUARTZ
5955-01-221-1727INTERCHANGEABLE
CRYSTAL UNIT,QUARTZ
5955-01-221-1728INTERCHANGEABLE
CRYSTAL UNIT,QUARTZ
5955-01-221-1729INTERCHANGEABLE
CRYSTAL UNIT,QUARTZ
5955-01-221-1731INTERCHANGEABLE
CRYSTAL UNIT,QUARTZ
5955-01-261-7748INTERCHANGEABLE
CRYSTAL UNIT,QUARTZ
5955-01-261-7749INTERCHANGEABLE
CRYSTAL UNIT,QUARTZ

Frequently Asked Questions

What is NSN 5955-00-928-1521?

NSN 5955-00-928-1521 is a Crystal Unit,quartz, manufactured by Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M, classified under FSC 5955 (No Item Name Available). Status: active.

What are the part numbers for NSN 5955-00-928-1521?

NSN 5955-00-928-1521 has 7 cross-referenced part numbers: CR133/U100M1000 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), 8537694-1 (Cts Inc), G21-1 (Microsemi Corp. - High Performance Timing Dba Vectron International- Cancelled), MIL-C-3098/112 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), 8537694-1 (S. W. Electronics & Manufacturing Corp. Dba Swemco) and 2 more.

What NSN replaces 5955-00-928-1521?

There are 12 known substitutes for 5955-00-928-1521: 5330-00-311-7958, 5315-00-811-9214, 4410-00-929-8725 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of CR133/U100M1000?

Key specifications for CR133/U100M1000: Mode of Oscillation: FIFTH OVERTONE AND THIRD OVERTONE; Terminal Diameter: 0.038 INCHES MINIMUM AND 0.042 INCHES MAXIMUM IN; Body Length: 0.530 INCHES MAXIMUM IN; Terminal Length: 0.223 INCHES MINIMUM AND 0.248 INCHES MAXIMUM IN. 19 total characteristics are documented in the Federal Logistics Information System.

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