Acquisition method (AMC)
3
FSC 4520 × HEATER,DUCT TYPE,STATIONARY
HEATER,DUCT TYPE,STATIONARY
4520-01-557-0753 FSC 4520
NSN 4520-01-557-0753 (also written 4520015570753; NIIN 01-557-0753) is a heater, duct type, stationary in Federal Supply Class 4520, Space and Water Heating Equipment. 6 manufacturer part numbers from 4 suppliers are on record. It was last purchased in Oct 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)
C
Competition
Coded for a named source
AMC 3: buy directly from the actual manufacturer, second or later time. AMSC C: needs engineering source approval; other sources must qualify first. 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 |
|---|---|
| END ITEM IDENTIFICATION AGAV | MRAP - UNIQUE NSN - USED ON 6 MRAP VARIANTS; MRAP - COUGAR; MRAP - M-ATV; HIGH-MOBILITY ARTILLERY ROCKET SYSTEM (HIMARS) |
| PART NAME ASSIGNED BY CONTROLLING AGENCY CXCY | COVER GROUP AIR INLET |
| PROPRIETARY CHARACTERISTICS PRPY | PACS |
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 |
|---|---|---|
| 189-8779 | 11083 | CATERPILLAR INC DIV CATERPILLAR DEFENSE |
| 189-8779 | U8468 | FINNING (UK) LTD |
| 2002458 | 1EFH8 | GENERAL DYNAMICS LAND SYSTEMS - FORCE PROTECTION INC. DBA GDLS DIV GDLS-FP |
| 23KP276 | 75Q65 | OSHKOSH DEFENSE LLC |
| 294-7675 | 11083 | CATERPILLAR INC DIV CATERPILLAR DEFENSE |
| CV132142 | U8468 | FINNING (UK) LTD |
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
—
Oct 15, 2026
Last purchased
2 · 2.0/yr
Purchase records
$692.34
Total demand
$346.17
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 21, 2026 | SPE7LX21D0087/SPE7LX26FBD48 ↗ | ATLANTIC DIVING SUPPLY, INC. DBA ADS | — | $346.17 |
| Oct 15, 2026 | SPE7LX21D0087/SPE7LX27FA16V ↗ | ATLANTIC DIVING SUPPLY, INC. DBA ADS | — | $346.17 |
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
ATLANTIC DIVING SUPPLY, INC. DBA ADS
last award Oct 2026
CATERPILLAR INC DIV CATERPILLAR DEFENSE
no award yet
no awards on record
Listed source FINNING (UK) LTD
no award yet
no awards on record
Listed source GENERAL DYNAMICS LAND SYSTEMS - FORCE PROTECTION INC. DBA GDLS DIV GDLS-FP
no award yet
no awards on record
Listed source OSHKOSH DEFENSE LLC
no award yet
no awards on record
Listed source ATLANTIC DIVING SUPPLY, INC. DBA ADS won 2 of the last 2 awards. ATLANTIC DIVING SUPPLY, INC. DBA ADS 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 10, 2026.
- Contract action totals: USAspending, context only.
- Data last refreshed: 2026-10-16.
- Full methodology →
Cite this page
Citation
NSN Explorer. "HEATER,DUCT TYPE,STATIONARY." nsnexplorer.com, https://nsnexplorer.com/nsn/4520-01-557-0753/. Data as of October 19, 2026.
Link
https://nsnexplorer.com/nsn/4520-01-557-0753/