Acquisition method (AMC)
1
FSC 5310 × NUT,SELF-LOCKING,EXTENDED WASHER
NUT,SELF-LOCKING,EXTENDED WASHER
5310-00-677-0659 FSC 5310
NSN 5310-00-677-0659 (also written 5310006770659; NIIN 00-677-0659) is a nut, self-locking, extended washer in Federal Supply Class 5310, Nuts and Washers. 7 manufacturer part numbers from 7 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 as suitable for competitive acquisition (AMC 1).
Suffix (AMSC)
C
Competition
Coded for competition
AMC 1: suitable for competitive acquisition, 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 |
|---|---|
| MATERIAL MATT | OVERALL STEEL |
| SURFACE TREATMENT SFTT | OVERALL CADMIUM |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION STDC | OVERALL FED SPEC SINGLE TREATMENT RESPONSE QQ--416 QQ--416 |
| SPECIFICATION/STANDARD DATA ZZZK | PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD 80205-NAS1291 NAS1291 |
| CRITICALITY CODE JUSTIFICATION CRTL | FEAT |
| SPECIAL FEATURES FEAT | WEAPON SYSTEM ESSENTIAL |
| WIDTH ACROSS FLATS ASDB | INCHES MINIMUM 0.556 AND INCHES MAXIMUM 0.566 |
| TEMP RATING AZKQ | FAHRENHEIT NOMINAL 450.0 |
| THREAD SERIES BZRR | UNIFIED NATIONAL JOINT FINE (UNJF) |
| THREAD QUANTITY PER INCH CMLP | 20 |
| NOMINAL THREAD SIZE CQJX | INCHES 0.500 |
| OVERALL HEIGHT ABKW | INCHES MINIMUM 0.350 AND INCHES MAXIMUM 0.410 |
| NUT STYLE ACTA | — |
| WASHER THICKNESS ADEM | INCHES MINIMUM 0.040 |
| WASHER OUTSIDE DIAMETER AAVX | INCHES MAXIMUM 0.814 |
| LUBRICATION ABAJ | DRY FILM LUBRICANT |
| LOCKING FEATURE AAUM | PREVAILING TORQUE ALL METAL DESIGN |
| THREAD CLASS AAJD | 3B |
| THREAD DIRECTION AAJF | RIGHT-HAND |
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 |
|---|---|---|
| NAS1291-8 | 019L2 | ESNA, LLC |
| NAS1291-8 | 17446 | HUCK INTERNATIONAL, INC |
| NAS1291-8 | 1V0G6 | ADEPT FASTENERS INC |
| NAS1291-8 | 27238 | BRISTOL INDUSTRIES, LLC |
| NAS1291-8 | 78286 | SIKORSKY AIRCRAFT CORPORATION DBA SIKORSKY AIRCRAFT CORP |
| NAS1291-8 | 80205 | NATIONAL AEROSPACE STANDARDS COMMITTEE AEROSPACE INDUSTRIES ASSOCIATION OF AMERICA INC NOT FOR RFQ OR SOLICITATION USE |
| NAS1291-8 | A3856 | PAOLO ASTORI SPA |
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 29, 2026
Last purchased
2 · 2.0/yr
Purchase records
$354,558
Total demand
$4,558
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 |
|---|---|---|---|---|
| Oct 21, 2026 | SPE4A727D5013 ↗ | DEFENSE SUPPORT SERVICES, INC. | — | $350,000 |
| Oct 29, 2026 | SPE4A727D5013/SPE4A727F1087 ↗ | DEFENSE SUPPORT SERVICES, INC. | — | $4,558 |
Demand history
Every solicitation we've indexed for this NSN, open and closed — 2 on record. Closed RFQs (expired, cancelled, or awarded) stay here as a record of past demand; they never get removed.
Buying rhythm
How often does the government buy this item, and how long since the last time? Every solicitation and award on one line.
- Solicitation posted
- Award made
Dot size shows quantity. A faint bar joins a solicitation to the award made against it.
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
DEFENSE SUPPORT SERVICES, INC.
last award Oct 2026
ADEPT FASTENERS INC
no award yet
no awards on record
Listed source BRISTOL INDUSTRIES, LLC
no award yet
no awards on record
Listed source ESNA, LLC
no award yet
no awards on record
Listed source HUCK INTERNATIONAL, INC
no award yet
no awards on record
Listed source 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 PAOLO ASTORI SPA
no award yet
no awards on record
Listed source SIKORSKY AIRCRAFT CORPORATION DBA SIKORSKY AIRCRAFT CORP
no award yet
no awards on record
Listed source DEFENSE SUPPORT SERVICES, INC. won 2 of the last 2 awards. DEFENSE SUPPORT SERVICES, INC. won without being a listed source.
| Solicitation | Issued | Closes / closed | Qty | Status | |
|---|---|---|---|---|---|
| SPE4A6-27-T-3749 | Oct 14, 2026 | Oct 21, 2026 | 1,397 | Expired | View at DIBBS → |
| SPE4A6-26-T-14TM | Aug 11, 2026 | Aug 18, 2026 | 421 | 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,EXTENDED WASHER." nsnexplorer.com, https://nsnexplorer.com/nsn/5310-00-677-0659/. Data as of November 7, 2026.
Link
https://nsnexplorer.com/nsn/5310-00-677-0659/