# NSN 5955-00-140-5749: Crystal Unit, Quartz

NSN 5955-00-140-5749 (also written 5955001405749; NIIN 00-140-5749) is a crystal unit, quartz in Federal Supply Class 5955, Oscillators and Piezoelectric Crystals. 10 manufacturer part numbers from 8 suppliers are on record. It was last purchased in Aug 2026.

## Identification

- NSN: 5955-00-140-5749 (5955001405749)
- NIIN: 00-140-5749 (001405749)
- Item name: CRYSTAL UNIT,QUARTZ
- Federal Supply Class: [FSC 5955 Oscillators and Piezoelectric Crystals](https://nsnexplorer.com/fsc/5955/)
- Federal Supply Group: [FSG 59](https://nsnexplorer.com/group/59/)
- Acquisition method suffix code: AMSC T: handled under qualified products list procedures. (observed 2026-11-04)
- Acquisition method code: 1

## Characteristics

| Code | Requirement | Reply |
| --- | --- | --- |
| ADAT | BODY WIDTH | INCHES MAXIMUM 0.402 |
| ADPR | BODY THICKNESS | INCHES MAXIMUM 0.150 |
| ABMK | OVERALL WIDTH | INCHES MAXIMUM 0.435 |
| CRFX | FREQUENCY TOLERANCE FOR OPERATING TEMP IN PERCENT | -0.002 TO 0.002 AND -0.003 TO 0.003 |
| CRMP | EQUIVALENT RESISTANCE VALUE IN OHMS | MAXIMUM 40.0 |
| ADUM | OVERALL THICKNESS | INCHES MAXIMUM 0.183 |
| AEHF | SHUNT CAPACITANCE IN PICOFARADS | MAXIMUM 3.5 |
| AEHG | SPECIFIED FREQUENCY | MEGAHERTZ 25.000 |
| AEHT | CENTER TO CENTER DISTANCE BETWEEN TERMINALS | INCHES MINIMUM 0.184 AND INCHES MAXIMUM 0.200 |
| AFGA | OPERATING TEMP RANGE | CELSIUS -40.0 TO 90.0 AND CELSIUS -55.0 TO 105.0 |
| CQYL | DRIVE LEVEL RATING | MILLIWATTS MINIMUM 1.6 AND MILLIWATTS MAXIMUM 2.4 |
| ABHP | OVERALL LENGTH | INCHES MAXIMUM 0.530 |
| ABJT | TERMINAL LENGTH | INCHES MINIMUM 0.5003 |
| MATT | MATERIAL | COVER HOLDER GLASS |
| STYL | STYLE DESIGNATOR | — |
| TEST | TEST DATA DOCUMENT | 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.). 81349--IL-C-3098 TO 62 |
| ZZZK | SPECIFICATION/STANDARD DATA | GOVERNMENT SPECIFICATION 81349--IL-C-3098 TO 53 |
| AEBT | TERMINAL DIAMETER | INCHES MINIMUM 0.016 AND INCHES MAXIMUM 0.019 |
| AEHC | MODE OF OSCILLATION | THIRD OVERTONE AND FIFTH OVERTONE |
| AEHD | CIRCUIT RESONANCE | SERIES RESONANCE |

## Part numbers

| Part number | CAGE | Supplier | Source |
| --- | --- | --- | --- |
| CA3-76-25-000000MHZ | 00809 | WENZEL INTERNATIONAL INC DIV CROVEN CRYSTALS | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| CR65AU25-000000MHZ | 75378 | CTS INC | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| CR76/U25M00000 | 81349 | MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| CR76AU25-000000MHZ | 00136 | MICROSEMI CORP. - HIGH PERFORMANCE TIMING DBA VECTRON INTERNATIONAL- CANCELLED | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| CR76AU25-000000MHZ | 18853 | INFICON EDC INC. | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| CR76AU25-000000MHZ | 23875 | M-TRON INDUSTRIES, INC | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| CR76AU25-000000MHZ | 59492 | QUARTZTEK INC | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| CR76AU25.000000MHZ | 13571 | ELECTRONIC RESEARCH COMPANY | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| MIL-C-3098/53 | 81349 | MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| MIL-PRF-3098/53 | 81349 | MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |

## Contract awards

Newest first.

| Date | Award | Description | Recipient | Amount |
| --- | --- | --- | --- | --- |
| 2026-08-14 | [SPE7M125P0956](https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=5955001405749) | CRYSTAL UNIT, QUARTZ | ASCHBACHER & ASSOCIATES INC | $1,144.80 |
| 2026-08-14 | [SPE7M125P0956](https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=5955001405749) | CRYSTAL UNIT, QUARTZ | ASCHBACHER & ASSOCIATES INC | $1,144.80 |

## Sources

- DLA DIBBS RFQs for this NSN: https://www.dibbs.bsm.dla.mil/RFQ/RFQNsn.aspx?value=5955001405749&category=nsn
- DLA DIBBS awards for this NSN: https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=5955001405749
- AMSC record: https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/
- USAspending contract actions (each award above links to its record)
- All data is public U.S. government data; every row above links to its source record where one exists.

Canonical page: https://nsnexplorer.com/nsn/5955-00-140-5749/
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