Acquisition method (AMC)
3
FSC 5310 × WASHER,FLAT
WASHER,FLAT
5310-01-170-8539 FSC 5310
NSN 5310-01-170-8539 (also written 5310011708539; NIIN 01-170-8539) is a washer, flat in Federal Supply Class 5310, Nuts and Washers. 3 manufacturer part numbers from 2 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 to be bought directly from the actual manufacturer (AMC 3).
Suffix (AMSC)
L
Competition
Coded for a named source
AMC 3: buy directly from the actual manufacturer, second or later time. AMSC L: annual buy value is below the screening threshold. 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 |
|---|---|
| CROSS-SECTIONAL SHAPE STYLE AAGR | — |
| HOLE DIAMETER AAUB | INCHES MINIMUM 1.276 AND INCHES MAXIMUM 1.286 |
| PERIPHERAL SHAPE STYLE ABMW | — |
| CENTER HOLE SHAPE STYLE ABMX | — |
| THICKNESS ABNM | INCHES MINIMUM 0.124 AND INCHES MAXIMUM 0.126 |
| OVERALL DIAMETER ADAV | INCHES MINIMUM 1.735 AND INCHES MAXIMUM 1.750 |
| HARDNESS RATING CQFM | ROCKWELL C NOMINAL 50.0 |
| MATERIAL MATT | OVERALL STEEL |
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 |
|---|---|---|
| 200001 | 12361 | GROVE U.S. LLC DBA GROVE US LLC |
| WLM200001 | 12361 | GROVE U.S. LLC DBA GROVE US LLC |
| WLM200001 | 7M196 | KEYSTONE AUTOMOTIVE OPERATIONS INC DBA GROVE NORTH AMERICA |
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
$128.97
Purchases
2
Total spend
$4,256
Oct 6, 2026
Last purchased
4 · 4.0/yr
Purchase records
$8,512
Total demand
$128.97
Latest unit price
Purchase history
| Awarded | Qty | Unit price | Total | Supplier | Agency | Source |
|---|---|---|---|---|---|---|
| Oct 6, 2026 | 9 | $128.97 | $1,161 | MELTON SALES & SERVICE DIV MELTON INDUSTRIES (4X8W5) | Unknown | Source ↗ |
| Sep 16, 2026 | 24 | $128.97 | $3,095 | MELTON SALES & SERVICE DIV MELTON INDUSTRIES (4X8W5) | Unknown | Source ↗ |
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 16, 2026 | SPE4A626V371E ↗ | — | — | $3,095 |
| Oct 6, 2026 | SPE4A027P0042 ↗ | — | — | $1,161 |
Demand history
Every solicitation we've indexed for this NSN, open and closed — 4 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.
Time from solicitation to award
How long does a buy take from posting to award? One bar per past award that matches a solicitation.
- Open for quotes
- Closed, awaiting award
The typical buy took 19 days from posting to award.
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
MELTON SALES & SERVICE DIV MELTON INDUSTRIES
last award Oct 2026
GROVE U.S. LLC DBA GROVE US LLC
no award yet
no awards on record
Listed source KEYSTONE AUTOMOTIVE OPERATIONS INC DBA GROVE NORTH AMERICA
no award yet
no awards on record
Listed source MELTON SALES & SERVICE DIV MELTON INDUSTRIES won 2 of the last 2 awards. MELTON SALES & SERVICE DIV MELTON INDUSTRIES won without being a listed source.
| Solicitation | Issued | Closes / closed | Qty | Status | |
|---|---|---|---|---|---|
| SPE4A6-27-T-5853 | Oct 23, 2026 | Oct 30, 2026 | 23 | Cancelled | View at DIBBS → |
| SPE4A6-26-T-27PG | Sep 10, 2026 | Sep 17, 2026 | 24 | Expired | View at DIBBS → |
| SPE4A0-26-T-4620 | Sep 4, 2026 | Sep 11, 2026 | 9 | Expired | View at DIBBS → |
| SPE4A6-26-T-16NP | Aug 14, 2026 | Aug 21, 2026 | 22 | 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: 2026-10-20.
- Full methodology →
Cite this page
Citation
NSN Explorer. "WASHER,FLAT." nsnexplorer.com, https://nsnexplorer.com/nsn/5310-01-170-8539/. Data as of November 7, 2026.
Link
https://nsnexplorer.com/nsn/5310-01-170-8539/