Acquisition method (AMC)
3
FSC 4920 × CONTROL RELAY,AIRCR
CONTROL RELAY,AIRCR
4920-01-556-9977 FSC 4920
NSN 4920-01-556-9977 (also written 4920015569977; NIIN 01-556-9977) is a control relay, aircr in Federal Supply Class 4920, Aircraft Maintenance and Repair Shop Specialized Equipment. 1 manufacturer part number from 1 supplier is 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)
Z
Competition
Coded for a named source
AMC 3: buy directly from the actual manufacturer, second or later time. AMSC Z: a commercial, nondevelopmental or off-the-shelf item. 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.
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 |
|---|---|---|
| 3RH1122-1BB40 | 0TX97 | SIEMENS INDUSTRIAL AUTOMATION 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
$53.06
Purchases
1
Total spend
$1,273
Sep 3, 2026
Last purchased
2 · 2.0/yr
Purchase records
$2,547
Total demand
$53.06
Latest unit price
Purchase history
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 3, 2026 | SPE4A526P7891 ↗ | — | — | $1,273 |
Demand history
Every solicitation we've indexed for this NSN, open and closed — 1 on record. Closed RFQs (expired, cancelled, or awarded) stay here as a record of past demand; they never get removed.
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
CAGE 8J0N1
last award Sep 2026
SIEMENS INDUSTRIAL AUTOMATION INC
no award yet
no awards on record
Listed source CAGE 8J0N1 won the only award on record. CAGE 8J0N1 won without being a listed source.
| Solicitation | Issued | Closes / closed | Qty | Status | |
|---|---|---|---|---|---|
| SPE4A5-26-T-355N | Aug 14, 2026 | Aug 21, 2026 | 24 | Expired | View at DIBBS → |
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: 2026-10-25.
- Full methodology →
Cite this page
Citation
NSN Explorer. "CONTROL RELAY,AIRCR." nsnexplorer.com, https://nsnexplorer.com/nsn/4920-01-556-9977/. Data as of November 7, 2026.
Link
https://nsnexplorer.com/nsn/4920-01-556-9977/