Home · FSC 6680 Liquid And Gas Flow, Liquid Level, And Mechanical Motion Measuring Instruments · NSN 6680-00-522-6397
NSN 6680-00-522-6397 — Generator,Tachometer
NIIN 00-522-6397 · unit of issue EA · AAC Z (insurance item) · source of supply SMS
Buying rhythm
from 6 government buys since 2019
The government has bought this item about every 3 months (loose, gaps vary ±69%). Last buy Jan 27, 2021. The gaps are too uneven to put a window on the next one. 1 solicitation is open right now.
How well this works: for loose items, "next buy about one typical gap after the last, give or take 136 days" caught the actual next buy 37% of the time across 35,590 past buys, against 24% for a fixed "one year later" guess. A rhythm, not a schedule: DLA buys when stock and demand say so. Every item due for a buy now.
NSN 6680-00-522-6397 is the national stock number for a generator,tachometer in federal supply class 6680 (Liquid And Gas Flow, Liquid Level, And Mechanical Motion Measuring Instruments). It cross-references to 1 manufacturer part number from 2 CAGE codes, including Combat Capabilities Development Command (Ccdc) Armaments Center Dba Ccdc Div Logistics Research And Engineering Directorate, General Dynamics-Ots, Inc.; the primary is 139C7804. The unit of issue is EA and the FLIS list price is $1,924.81.
The U.S. government has bought this item 14 times on record, most recently on January 27, 2021 at $1,350.00 each from Coast To Coast Aerospace, LLC. 1 solicitation is open right now, the soonest due September 30, 2026 for 11 EA. No seller has confirmed stock of it here in the last 60 days; watching the number is free and the first listing triggers an alert.
1
part number from 2 CAGEs
1
open solicitation, all agencies
0
government buys in 24 months
0
sellers with confirmed stock
Cross-references
Part numbers filed against this stock number, with the manufacturer (CAGE) and the FLIS reference codes.
| Part number | CAGE | Manufacturer | Reference | Variation |
|---|---|---|---|---|
| 139C7804 | 19200 | Combat Capabilities Development Command (Ccdc) Armaments Center Dba Ccdc Div Logistics Research And Engineering Directorate | 3 · Design control (vendor) | 2 · Fully interchangeable |
| 139C7804 | 05606 | General Dynamics-Ots, Inc. | 5 · Secondary reference | 2 · Fully interchangeable |
Government demand
Open DLA RFQs (DIBBS)
- SPE4A626T35WA · 11 EA · due Sep 30, 2026 · N · AMSC C · DIBBS
What the government paid
| Date | Vendor | Qty | Unit cost | Amount | Buyer | Reference |
|---|---|---|---|---|---|---|
| Jan 27, 2021 | Coast To Coast Aerospace, LLC 1Y5C0 | 25 | $1,350.00 | Dla | SPE4A621F6848 | |
| Dec 18, 2020 | Coast To Coast Aerospace, LLC 1Y5C0 | 25 | $1,350.00 | Dla | SPE4A621F4730 | |
| Sep 17, 2020 | Coast To Coast Aerospace, LLC 1Y5C0 | 25 | $1,350.00 | Dla | SPE4A620F303D | |
| May 14, 2020 | Coast To Coast Aerospace, LLC 1Y5C0 | 28 | $1,350.00 | Dla | SPE4A620F108D | |
| Apr 16, 2020 | Coast To Coast Aerospace, LLC 1Y5C0 | 25 | $1,350.00 | Dla | SPE4A620F005D | |
| Sep 8, 2019 | Coast To Coast Aerospace, LLC 1Y5C0 | 36 | $1,350.00 | Dla | SPE4A619F578R | |
| Feb 25, 2016 | Coast To Coast Aerospace, LLC 1Y5C0 | 25 | $1,273.00 | Dla | SPE4A616D01010001 | |
| Jan 15, 2016 | Coast To Coast Aerospace, LLC 1Y5C0 | 37 | $1,490.00 | Dla | SPM4A611D02390012 | |
| Nov 17, 2015 | Coast To Coast Aerospace, LLC 1Y5C0 | 20 | $1,490.00 | Dla | SPM4A611D02390011 | |
| Jun 4, 2015 | Coast To Coast Aerospace, LLC 1Y5C0 | 27 | $1,490.00 | Dla | SPM4A611D02390010 | |
| May 6, 2015 | Coast To Coast Aerospace, LLC 1Y5C0 | 26 | $1,490.00 | Dla | SPM4A611D02390009 | |
| Apr 22, 2015 | Coast To Coast Aerospace, LLC 1Y5C0 | 18 | $1,490.00 | Dla | SPM4A611D02390008 | |
| Mar 27, 2015 | Coast To Coast Aerospace, LLC 1Y5C0 | 15 | $1,485.00 | Dla | SPM4A611D02390007 | |
| Jun 29, 2012 | Coast To Coast Aerospace, LLC 1Y5C0 | 58 | $1,461.00 | Dla | SPM4A611D02390006 |
Sources: DLA DIBBS procurement history (unit cost), DLA award history, FPDS (all agencies), SAM.gov notices. 14 buys on record in total.
Sellers with confirmed stock
No seller has confirmed stock on this NSN in the last 60 days. Watch it and we will email you when one does, or request a quote on 139C7804.
Listings appear here only while the seller has confirmed them within 60 days. Sellers: list this part free.
DLA management data
- FLIS unit price
- $1,924.81
- Unit of issue
- EA
- Acquisition advice
- Z — Insurance item
- Source of supply
- SMS
- Effective
- Oct 1, 2025
Item characteristics
- Overall Length
- INCHES 2.358
- Overall Width
- INCHES 1.061
- Electrical Resistance
- OHMS 300.0
- Shaft Rotation Direction
- SINGLE END CLOCKWISE OR COUNTERCLOCKWISE
- Specific Use
- AH-1 HELICOPTER
- Mounting Method
- CLAMP RING(S)
- Mounting Facility Type And Quantity
- CLAMP COLLAR 1
- Excitor Type
- SELF-EXCITED
- Accuracy Range In Percent
- -0.05 TO 0.05
- Calibration Speed In Rpm
- 1000.0
- Calibration Voltage Output Type In Volts
- DC 7.0
- Features Provided
- HORIZONTAL MOUNTING POSITION AND VERTICAL MOUNTING POSITION
- Length Of Shaft From Housing
- SINGLE END INCHES 0.438
- Rotor Speed Rating In Rpm
- SINGLE FULL LOAD 15000.0
- Terminal Type And Quantity
- CONNECTOR, PLUG 1
About this page
An NSN is 13 digits: the 4-digit Federal Supply Class and the 9-digit NIIN. Cross-references come from the federal logistics record; demand from DLA DIBBS, SAM.gov and FPDS; ADs from the Federal Register. Refreshed nightly. Market Pulse shows the whole market.
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