Acquisition method (AMC)
1
FSC 5310 × NUT,SELF-LOCKING,HEXAGON
NUT,SELF-LOCKING,HEXAGON
5310-01-557-0557 FSC 5310
NSN 5310-01-557-0557 (also written 5310015570557; NIIN 01-557-0557) is a nut, self-locking, hexagon in Federal Supply Class 5310, Nuts and Washers. 4 manufacturer part numbers from 3 suppliers are on record. No purchases are on record yet.
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 |
|---|---|
| THREAD CLASS AAJD | 2B |
| THREAD DIRECTION AAJF | RIGHT-HAND |
| LOCKING FEATURE AAUM | PREVAILING TORQUE ALL METAL DESIGN |
| LUBRICATION ABAJ | WAX |
| NUT STYLE ACTA | — |
| NUT HEIGHT ADEA | INCHES MINIMUM 0.473 AND INCHES MAXIMUM 0.621 |
| END ITEM IDENTIFICATION AGAV | MRAP - UNIQUE NSN - USED ON 3 MRAP VARIANTS; MRAP - COUGAR |
| WIDTH ACROSS FLATS ASDB | INCHES MINIMUM 0.861 AND INCHES MAXIMUM 0.877 |
| THREAD SERIES BZRR | UNF |
| THREAD QUANTITY PER INCH CMLP | 18 |
| NOMINAL THREAD SIZE CQJX | INCHES 0.5625 |
| BEARING SURFACE TYPE CRTM | CHAMFERED |
| PART NAME ASSIGNED BY CONTROLLING AGENCY CXCY | TOP LOCK NUT |
| SPECIAL FEATURES FEAT | THEY START EASILY BY HAND, THEN MUST BE WRENCHED INTO FINAL POSITION; MATERIAL: GRADE C STEEL |
| MATERIAL MATT | OVERALL STEEL |
| PROPRIETARY CHARACTERISTICS PRPY | PACS |
| SURFACE TREATMENT SFTT | OVERALL ZINC |
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 |
|---|---|---|
| 10001802 | 1EFH8 | GENERAL DYNAMICS LAND SYSTEMS - FORCE PROTECTION INC. DBA GDLS DIV GDLS-FP |
| 12759-00634 | 0Y3H3 | FASTENAL COMPANY DBA FASTENAL CO |
| 37310 | 0Y3H3 | FASTENAL COMPANY DBA FASTENAL CO |
| 57478-000 | U7887 | NP AEROSPACE LIMITED |
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
—
—
Last purchased
—
Purchase records
—
Total demand
—
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.
No related contract actions on record.
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.
| Solicitation | Issued | Closes / closed | Qty | Status | |
|---|---|---|---|---|---|
| SPE4A6-26-T-32YG | Sep 18, 2026 | Sep 25, 2026 | 358 | 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.
- Full methodology →
Cite this page
Citation
NSN Explorer. "NUT,SELF-LOCKING,HEXAGON." nsnexplorer.com, https://nsnexplorer.com/nsn/5310-01-557-0557/. Data as of October 19, 2026.
Link
https://nsnexplorer.com/nsn/5310-01-557-0557/