Acquisition method (AMC)
3
FSC 5310 × NUT,SELF-LOCKING,EXTENDED WASHER
NUT,SELF-LOCKING,EXTENDED WASHER
5310-01-281-8548 FSC 5310
NSN 5310-01-281-8548 (also written 5310012818548; NIIN 01-281-8548) is a nut, self-locking, extended washer in Federal Supply Class 5310, Nuts and Washers. 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)
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 |
|---|---|
| THREAD CLASS AAJD | 3B |
| THREAD DIRECTION AAJF | RIGHT-HAND |
| LOCKING FEATURE AAUM | PREVAILING TORQUE ALL METAL DESIGN |
| WASHER OUTSIDE DIAMETER AAVX | INCHES MAXIMUM 0.770 |
| LUBRICATION ABAJ | DRY FILM LUBRICANT |
| OVERALL HEIGHT ABKW | INCHES MINIMUM 0.548 AND INCHES MAXIMUM 0.578 |
| NUT STYLE ACTA | — |
| WASHER THICKNESS ADEM | INCHES NOMINAL 0.070 |
| END ITEM IDENTIFICATION AGAV | PACER SPECIAL |
| WIDTH ACROSS FLATS ASDB | INCHES MINIMUM 0.554 AND INCHES MAXIMUM 0.566 |
| TEMP RATING AZKQ | FAHRENHEIT MAXIMUM 1800.0 |
| THREAD SERIES BZRR | UNIFIED NATIONAL JOINT FINE (UNJF) |
| THREAD QUANTITY PER INCH CMLP | 20 |
| NOMINAL THREAD SIZE CQJX | INCHES 0.500 |
| MATERIAL MATT | OVERALL IRON ALLOY 660 |
| MATERIAL DOCUMENT AND CLASSIFICATION MDCL | OVERALL ASSN STD SINGLE MATERIAL RESPONSE A-S5732 |
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 |
|---|---|---|
| 73781CM-820 | 56878 | SPS TECHNOLOGIES, LLC DBA PB FASTENERS |
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 29, 2026
Last purchased
1 · 1.0/yr
Purchase records
$13,750
Total demand
$13,750
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 29, 2026 | SPE4A626PJ260 ↗ | DON INDUSTRIAL GROUP LLC | — | $13,750 |
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
DON INDUSTRIAL GROUP LLC
last award Sep 2026
SPS TECHNOLOGIES, LLC DBA PB FASTENERS
no award yet
no awards on record
Listed source DON INDUSTRIAL GROUP LLC won the only award on record. DON INDUSTRIAL GROUP 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 10, 2026.
- Contract action totals: USAspending, context only.
- Data last refreshed: 2026-09-30.
- Full methodology →
Cite this page
Citation
NSN Explorer. "NUT,SELF-LOCKING,EXTENDED WASHER." nsnexplorer.com, https://nsnexplorer.com/nsn/5310-01-281-8548/. Data as of October 19, 2026.
Link
https://nsnexplorer.com/nsn/5310-01-281-8548/