Acquisition method (AMC)
3
FSC 4520 × HEATER,DUCT TYPE,STATIONARY
HEATER,DUCT TYPE,STATIONARY
4520-01-287-3991 FSC 4520
NSN 4520-01-287-3991 (also written 4520012873991; NIIN 01-287-3991) is a heater, duct type, stationary in Federal Supply Class 4520, Space and Water Heating Equipment. 3 manufacturer part numbers from 3 suppliers are on record. It was last purchased in Sep 2026.
Open for bid
No open solicitations on record for this NSN right now.
Can you win it?
This item is coded to be bought directly from the actual manufacturer (AMC 3).
Suffix (AMSC)
D
Competition
Coded for a named source
AMC 3: buy directly from the actual manufacturer, second or later time. AMSC D: the data needed to compete the part is unavailable or cannot be obtained economically. The codes describe the item's status on record, not any one solicitation. What the codes mean
What it is — can you make it?
Dimensions, the FLIS specification requirements, and the manufacturer part numbers already qualified against this NSN.
Specifications
From the federal catalog (DLA FLIS / PUB LOG) — what your part has to meet. Cited specification documents can be looked up in ASSIST Quick Search ↗, DoD's public spec repository — copy the document number in.
| Requirement | Value |
|---|---|
| MOUNTING TYPE AAXX | VENTILATION DUCT |
| HEAT MEDIUM TYPE ABAM | AIR |
| WIDTH ABGL | INCHES NOMINAL 42.000 |
| CURRENT TYPE ACDC | AC |
| DEPTH AEJZ | INCHES NOMINAL 8.000 |
| CURRENT RATING IN AMPS AMPS | 1054.5 |
| HEATING ELEMENT TYPE BDXJ | ELECTRIC NONIMMERSION |
| INCLOSURE MATERIAL CQSJ | STEEL CORROSION RESISTING |
| HEAT DELIVERY RATE CQXD | BRITISH THERMAL UNIT 156316.8 |
| VOLTAGE IN VOLTS ELEC | 440.0 |
| PHASE FAAZ | THREE |
| SPECIAL FEATURES FEAT | NON-MAGNETIC |
| FREQUENCY IN HERTZ FREQ | 60.0 |
| HEIGHT HGTH | INCHES NOMINAL 16.750 |
| SPECIFICATION/STANDARD DATA ZZZK | GOVERNMENT SPECIFICATION 81349--IL-H-22594 |
| NONDEFINITIVE SPEC/STD DATA ZZZT | TYPE - |
Manufacturer part numbers
Commercial part numbers cross-referenced to this NSN in the federal catalog — the parts that have been accepted as satisfying this stock number, and who makes them.
| Part number | CAGE | Manufacturer |
|---|---|---|
| MIL-H-22594 | 81349 | MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M |
| TFZ-33M | 74924 | INDEECO LLC DBA INDEECO |
| TFZ-33M | 74974 | BLAIR MERRIAM FRESH FRUIT AND PRODUCE CO INC |
What it pays — so you can quote
The government's own price and demand record for this NSN — what past awards cleared at, so you know where to land your quote.
Latest unit price
—
Purchases
0
Total spend
—
Sep 10, 2026
Last purchased
1 · 1.0/yr
Purchase records
$34,475
Total demand
$34,475
Latest award total
Purchase history
No priced purchases on record for this NSN yet.
Related contract actions
Contract action totals, not unit prices — obligation amounts from USAspending for related awards, shown for context only. These do not appear on the price chart above.
| Action date | Award # | Recipient | Agency | Obligation |
|---|---|---|---|---|
| Sep 10, 2026 | SPE8E926P1418 ↗ | VETERANS AEROSPACE LLC | — | $34,475 |
Demand history
Who wins this item
Does one supplier win this every time, and are the winners on the listed-source list? One dot per award.
- Award in the last 2 years
- Older award
VETERANS AEROSPACE LLC
last award Sep 2026
BLAIR MERRIAM FRESH FRUIT AND PRODUCE CO INC
no award yet
no awards on record
Listed source INDEECO LLC DBA INDEECO
no award yet
no awards on record
Listed source MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
no award yet
no awards on record
Listed source VETERANS AEROSPACE LLC won the only award on record. VETERANS AEROSPACE LLC won without being a listed source.
Open RFQs on DIBBS → DIBBS award history ↗
About this data
- Unit prices: DLA DIBBS award records — every row links to its government record.
- AMSC: latest observed value from DIBBS solicitation history as of Oct 23, 2026.
- Contract action totals: USAspending, context only.
- Data last refreshed: 2026-10-23.
- Full methodology →
Cite this page
Citation
NSN Explorer. "HEATER,DUCT TYPE,STATIONARY." nsnexplorer.com, https://nsnexplorer.com/nsn/4520-01-287-3991/. Data as of November 7, 2026.
Link
https://nsnexplorer.com/nsn/4520-01-287-3991/