Acquisition method (AMC)
1
FSC 5310 × NUT,SELF-LOCKING,ASSEMBLED WASHE
NUT,SELF-LOCKING,ASSEMBLED WASHE
5310-01-116-3579 FSC 5310
NSN 5310-01-116-3579 (also written 5310011163579; NIIN 01-116-3579) is a nut, self-locking, assembled washe in Federal Supply Class 5310, Nuts and Washers. 1 manufacturer part number from 1 supplier is 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 as suitable for competitive acquisition (AMC 1).
Suffix (AMSC)
G
Competition
Coded for competition
AMC 1: suitable for competitive acquisition, second or later time. AMSC G: the government has a complete data package and the rights to use it. 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.
Dimensioned drawing
Generated from the federal catalog's dimensional data for this NSN — reference only, not a manufacturing drawing.
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 0.660 |
| COUNTERBORE DIAMETER AAWY | NUT INCHES MINIMUM 0.407 AND INCHES MAXIMUM 0.417 |
| LUBRICATION ABAJ | DRY FILM LUBRICANT |
| OVERALL HEIGHT ABKW | INCHES MINIMUM 0.341 AND INCHES MAXIMUM 0.361 |
| NUT STYLE ACTA | — |
| NUT COUNTERBORE DEPTH ADFK | NUT INCHES MINIMUM 0.072 AND INCHES MAXIMUM 0.087 |
| WIDTH ACROSS FLATS ASDB | INCHES MINIMUM 0.430 AND INCHES MAXIMUM 0.439 |
| TEMP RATING AZKQ | FAHRENHEIT MAXIMUM 450.0 |
| THREAD SERIES BZRR | UNIFIED NATIONAL JOINT FINE (UNJF) |
| THREAD QUANTITY PER INCH CMLP | 24 |
| HARDNESS RATING CQFM | ROCKWELL C MINIMUM 36.0 AND ROCKWELL C MAXIMUM 40.0 |
| NOMINAL THREAD SIZE CQJX | INCHES 0.375 |
| SPECIAL FEATURES FEAT | WASHER ROCKWELL C SCALE 40 MIN AND ROCKWELL C SCALE 45 MAX |
| MATERIAL MATT | WASHER STEEL COMP 1050 |
| MATERIAL MATT | NUT STEEL COMP 4340 OR STEEL COMP 8740 |
| MATERIAL DOCUMENT AND CLASSIFICATION MDCL | NUT MIL SPEC 1ST MATERIAL RESPONSE -IL-S-5000 OR MIL SPEC 2ND MATERIAL RESPONSE -IL-S-6049 |
| MATERIAL DOCUMENT AND CLASSIFICATION MDCL | WASHER ASSN STD SINGLE MATERIAL RESPONSE A-S 5085 |
| SURFACE TREATMENT SFTT | OVERALL CADMIUM AND CHROMATE |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION STDC | OVERALL FED SPEC ALL TREATMENT RESPONSES QQ--416,TY 2,CL 2 QQ--416 |
| SPECIFICATION/STANDARD DATA ZZZK | PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD 80205-NAS1726 NAS1726 |
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 |
|---|---|---|
| NAS1726-6D | 80205 | NATIONAL AEROSPACE STANDARDS COMMITTEE AEROSPACE INDUSTRIES ASSOCIATION OF AMERICA INC NOT FOR RFQ OR SOLICITATION USE |
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
$19.66
Purchases
1
Total spend
$13,271
Oct 29, 2026
Last purchased
2 · 2.0/yr
Purchase records
$26,541
Total demand
$19.66
Latest unit price
Purchase history
| Awarded | Qty | Unit price | Total | Supplier | Agency | Source |
|---|---|---|---|---|---|---|
| Oct 29, 2026 | 675 | $19.66 | $13,271 | POLYTECH DEFENSE SPARES LLC (4K539) | Unknown | Source ↗ |
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 |
|---|---|---|---|---|
| Oct 29, 2026 | SPE4A627V1537 ↗ | POLYTECH DEFENSE SPARES LLC | — | $13,271 |
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
POLYTECH DEFENSE SPARES LLC
last award Oct 2026
NATIONAL AEROSPACE STANDARDS COMMITTEE AEROSPACE INDUSTRIES ASSOCIATION OF AMERICA INC NOT FOR RFQ OR SOLICITATION USE
no award yet
no awards on record
Listed source POLYTECH DEFENSE SPARES LLC won the only award on record. POLYTECH DEFENSE SPARES LLC won without being a listed source.
| Solicitation | Issued | Closes / closed | Qty | Status | |
|---|---|---|---|---|---|
| SPE4A6-26-T-36DV | Sep 24, 2026 | Oct 1, 2026 | 675 | 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: 2026-11-01.
- Full methodology →
Cite this page
Citation
NSN Explorer. "NUT,SELF-LOCKING,ASSEMBLED WASHE." nsnexplorer.com, https://nsnexplorer.com/nsn/5310-01-116-3579/. Data as of November 7, 2026.
Link
https://nsnexplorer.com/nsn/5310-01-116-3579/