Acquisition method (AMC)
1
FSC 5310 × NUT,SELF-LOCKING,HEXAGON
NUT,SELF-LOCKING,HEXAGON
5310-00-461-6939 FSC 5310
NSN 5310-00-461-6939 (also written 5310004616939; NIIN 00-461-6939) is a nut, self-locking, hexagon in Federal Supply Class 5310, Nuts and Washers. 4 manufacturer part numbers from 4 suppliers are on record. It was last purchased in Nov 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.
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 |
|---|---|
| WIDTH ACROSS FLATS ASDB | INCHES MINIMUM 0.741 AND INCHES MAXIMUM 0.752 |
| THREAD QUANTITY PER INCH CMLP | 20 |
| HARDNESS RATING CQFM | ROCKWELL C MINIMUM 34.0 AND ROCKWELL C MAXIMUM 41.0 |
| NOMINAL THREAD SIZE CQJX | INCHES 0.500 |
| THREAD DIRECTION AAJF | RIGHT-HAND |
| LOCKING FEATURE AAUM | PREVAILING TORQUE ALL METAL DESIGN |
| MATERIAL DOCUMENT AND CLASSIFICATION MDCL | NUT ASSN STD ALL MATERIAL RESPONSES AISI |
| SURFACE TREATMENT SFTT | OVERALL CADMIUM |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION STDC | OVERALL FED SPEC SINGLE TREATMENT RESPONSE QQ--416,TY 2,CL 2 QQ--416 |
| LUBRICATION ABAJ | SOLUBLE LUBRICANT |
| NUT STYLE ACTA | — |
| NUT HEIGHT ADEA | INCHES MINIMUM 0.313 AND INCHES MAXIMUM 0.328 |
| MATERIAL MATT | NUT STEEL COMP 4130 OR STEEL COMP 4140 OR STEEL COMP 4340 OR STEEL COMP 8740 |
| TEMP RATING AZKQ | FAHRENHEIT MINIMUM -65.0 AND FAHRENHEIT MAXIMUM 450.0 |
| THREAD SERIES BZRR | UNIFIED NATIONAL JOINT FINE (UNJF) |
| BEARING SURFACE TYPE CRTM | CHAMFERED OR WASHER FACED |
| THREAD CLASS AAJD | 3B |
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 |
|---|---|---|
| 55LH7644-080 | 019L2 | ESNA, LLC |
| 55LH7644-080 | 72962 | HARVARD INDUSTRIES INC |
| 68454-820 | 56878 | SPS TECHNOLOGIES, LLC DBA PB FASTENERS |
| STSCC003A16 | 98897 | LOCKHEED MARTIN CORP DIV LOCKHEED MARTIN AERONAUTICS COMPANY |
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
—
Nov 5, 2026
Last purchased
2 · 2.0/yr
Purchase records
$46,610
Total demand
$20,303
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 9, 2026 | SPE4AX25D5000/SPE4A226F7304 ↗ | LOCKHEED MARTIN CORPORATION DIV ROTARY AND MISSION SYSTEMS | — | $26,307 |
| Nov 5, 2026 | SPE4AX25D5000/SPE4A227F0399 ↗ | LOCKHEED MARTIN CORPORATION DIV ROTARY AND MISSION SYSTEMS | — | $20,303 |
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
LOCKHEED MARTIN CORPORATION DIV ROTARY AND MISSION SYSTEMS
last award Nov 2026
ESNA, LLC
no award yet
no awards on record
Listed source HARVARD INDUSTRIES INC
no award yet
no awards on record
Listed source LOCKHEED MARTIN CORP DIV LOCKHEED MARTIN AERONAUTICS COMPANY
no award yet
no awards on record
Listed source SPS TECHNOLOGIES, LLC DBA PB FASTENERS
no award yet
no awards on record
Listed source LOCKHEED MARTIN CORPORATION DIV ROTARY AND MISSION SYSTEMS won 2 of the last 2 awards. LOCKHEED MARTIN CORPORATION DIV ROTARY AND MISSION SYSTEMS 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 27, 2026.
- Contract action totals: USAspending, context only.
- Data last refreshed: 2026-11-06.
- Full methodology →
Cite this page
Citation
NSN Explorer. "NUT,SELF-LOCKING,HEXAGON." nsnexplorer.com, https://nsnexplorer.com/nsn/5310-00-461-6939/. Data as of November 7, 2026.
Link
https://nsnexplorer.com/nsn/5310-00-461-6939/