Acquisition method (AMC)
1
FSC 5310 × NUT,SELF-LOCKING,HEXAGON
NUT,SELF-LOCKING,HEXAGON
5310-01-568-1781 FSC 5310
NSN 5310-01-568-1781 (also written 5310015681781; NIIN 01-568-1781) is a nut, self-locking, hexagon in Federal Supply Class 5310, Nuts and Washers. 1 manufacturer part number from 1 supplier is on record. It was last purchased in Aug 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 |
|---|---|
| NUT STYLE ACTA | — |
| LOCKING FEATURE AAUM | PREVAILING TORQUE ALL METAL DESIGN |
| THREAD CLASS AAJD | 2B |
| THREAD DIRECTION AAJF | RIGHT-HAND |
| NUT HEIGHT ADEA | INCHES MINIMUM 0.320 AND INCHES MAXIMUM 0.415 |
| END ITEM IDENTIFICATION AGAV | MRAP; MULTIPLE LAUNCH ROCKET SYSTEM (MLRS) |
| WIDTH ACROSS FLATS ASDB | INCHES MINIMUM 0.551 AND INCHES MAXIMUM 0.564 |
| TEMP RATING AZKQ | FAHRENHEIT NOMINAL 250.0 |
| THREAD SERIES BZRR | UNIFIED NATIONAL COARSE (UNC) |
| THREAD QUANTITY PER INCH CMLP | 16 |
| NOMINAL THREAD SIZE CQJX | INCHES 0.375 |
| BEARING SURFACE TYPE CRTM | FLAT |
| PART NAME ASSIGNED BY CONTROLLING AGENCY CXCY | NUT, SELF-LOCKING |
| MATERIAL MATT | OVERALL STEEL |
| MATERIAL DOCUMENT AND CLASSIFICATION MDCL | OVERALL ASSN STD SINGLE MATERIAL RESPONSE J995, GRADE 5 |
| SURFACE TREATMENT SFTT | OVERALL ZINC |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION STDC | OVERALL ASSN STD SINGLE TREATMENT RESPONSE AST- B633, TY 2, FE TO ZN 8 |
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 |
|---|---|---|
| M45913/2-6CG5Z | 81349 | MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M |
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
—
Aug 27, 2026
Last purchased
1 · 1.0/yr
Purchase records
$2,026
Total demand
$2,026
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 |
|---|---|---|---|---|
| Aug 27, 2026 | SPE4A626PAU13 ↗ | SPAIRES INC | — | $2,026 |
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
SPAIRES INC
last award Aug 2026
MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
no award yet
no awards on record
Listed source SPAIRES INC won the only award on record. SPAIRES INC 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 28, 2026.
- Contract action totals: USAspending, context only.
- Data last refreshed: 2026-10-28.
- Full methodology →
Cite this page
Citation
NSN Explorer. "NUT,SELF-LOCKING,HEXAGON." nsnexplorer.com, https://nsnexplorer.com/nsn/5310-01-568-1781/. Data as of November 7, 2026.
Link
https://nsnexplorer.com/nsn/5310-01-568-1781/