Acquisition method (AMC)
1
FSC 5310 × NUT,SELF-LOCKING,EXTENDED WASHER
NUT,SELF-LOCKING,EXTENDED WASHER
5310-00-964-6781 FSC 5310
NSN 5310-00-964-6781 (also written 5310009646781; NIIN 00-964-6781) is a nut, self-locking, extended washer in Federal Supply Class 5310, Nuts and Washers. 26 manufacturer part numbers from 14 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)
B
Competition
Coded for competition
AMC 1: suitable for competitive acquisition, second or later time. AMSC B: must be bought from the sources named on a source control or selected item drawing. 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 |
|---|---|
| THREAD CLASS AAJD | 3B |
| THREAD DIRECTION AAJF | RIGHT-HAND |
| LOCKING FEATURE AAUM | PREVAILING TORQUE ALL METAL DESIGN |
| WASHER OUTSIDE DIAMETER AAVX | INCHES MAXIMUM 0.443 |
| OVERALL HEIGHT ABKW | INCHES MINIMUM 0.396 AND INCHES MAXIMUM 0.411 |
| NUT STYLE ACTA | — |
| WASHER THICKNESS ADEM | INCHES MINIMUM 0.060 AND INCHES MAXIMUM 0.080 |
| WIDTH ACROSS FLATS ASDB | INCHES MINIMUM 0.369 AND INCHES MAXIMUM 0.376 |
| TEMP RATING AZKQ | FAHRENHEIT NOMINAL 1200.0 |
| THREAD SERIES BZRR | UNIFIED NATIONAL JOINT FINE (UNJF) |
| THREAD QUANTITY PER INCH CMLP | 28 |
| NOMINAL THREAD SIZE CQJX | INCHES 0.250 |
| MATERIAL MATT | OVERALL IRON ALLOY 660 |
| MATERIAL DOCUMENT AND CLASSIFICATION MDCL | OVERALL ASSN STD SINGLE MATERIAL RESPONSE A-S 5732 OR ASSN STD SINGLE MATERIAL RESPONSE A-S 5737 |
| PRECIOUS MATERIAL PRMT | SILVER |
| SURFACE TREATMENT SFTT | OVERALL SILVER |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION STDC | OVERALL ASSN STD SINGLE TREATMENT RESPONSE A-S 2410 |
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 |
|---|---|---|
| 119FW428 | 56878 | SPS TECHNOLOGIES, LLC DBA PB FASTENERS |
| BH00191-4 | 27238 | BRISTOL INDUSTRIES, LLC |
| H19517-4 | 15653 | HOWMET GLOBAL FASTENING SYSTEMS INC |
| H19517-4 | R1120 | SATAIR A/S |
| R399P2 | 07482 | GENERAL ELECTRIC COMPANY |
| R399P2 | 15653 | HOWMET GLOBAL FASTENING SYSTEMS INC |
| R399P2 | 27238 | BRISTOL INDUSTRIES, LLC |
| R399P2 | 51792 | APOLLO AEROSPACE |
| R399P2 | 5R793 | HOWMET GLOBAL FASTENING SYSTEMS INC |
| R399P2 | 92215 | HOWMET GLOBAL FASTENING SYSTEMS INC DIV TORRANCE OPERATIONS |
| R399P2A | 07482 | GENERAL ELECTRIC COMPANY |
| R399P2C | 07482 | GENERAL ELECTRIC COMPANY |
| R399P2H | 07482 | GENERAL ELECTRIC COMPANY |
| R399P2J | 07482 | GENERAL ELECTRIC COMPANY |
| R399P2M | 07482 | GENERAL ELECTRIC COMPANY |
| R399P2M | 8K112 | FREUNDLICH SUPPLY COMPANY, INC. |
| R399P2S | 07482 | GENERAL ELECTRIC COMPANY |
| SA4993C-428 | 52828 | REPUBLIC FASTENER MFG. CORP. DBA ARCONIC FASTENING SYSTEMS |
| SL4905-428 | 52828 | REPUBLIC FASTENER MFG. CORP. DBA ARCONIC FASTENING SYSTEMS |
| VN450B048 | 06950 | HOWMET GLOBAL FASTENING SYSTEMS INC |
| VN450B048 | 92215 | HOWMET GLOBAL FASTENING SYSTEMS INC DIV TORRANCE OPERATIONS |
| VN450B048 | C4293 | FAIRCHILD FASTENERS EUROPE - VSD GMBH |
| Z1855-048 | 019L2 | ESNA, LLC |
| Z1855-048 | 72962 | HARVARD INDUSTRIES INC |
| Z4063-048 | 019L2 | ESNA, LLC |
| Z4063-048 | 72962 | HARVARD INDUSTRIES INC |
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 — 2 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-37QV | Sep 29, 2026 | Oct 6, 2026 | 6,746 | Expired | View at DIBBS → |
| SPE4A6-26-T-33KT | Sep 21, 2026 | Sep 28, 2026 | 6,746 | Cancelled | 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,EXTENDED WASHER." nsnexplorer.com, https://nsnexplorer.com/nsn/5310-00-964-6781/. Data as of October 19, 2026.
Link
https://nsnexplorer.com/nsn/5310-00-964-6781/