Acquisition method (AMC)
1
FSC 5310 × WASHER,CONVEX
WASHER,CONVEX
5310-01-105-0548 FSC 5310
NSN 5310-01-105-0548 (also written 5310011050548; NIIN 01-105-0548) is a washer, convex in Federal Supply Class 5310, Nuts and Washers. 12 manufacturer part numbers from 8 suppliers are on record. It was last purchased in Sep 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.
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 |
|---|---|
| HOLE DIAMETER AAUB | INCHES MINIMUM 0.198 AND INCHES MAXIMUM 0.208 |
| OUTSIDE DIAMETER ABKV | INCHES MINIMUM 0.470 AND INCHES MAXIMUM 0.480 |
| MATERIAL THICKNESS ABPX | INCHES MINIMUM 0.060 AND INCHES MAXIMUM 0.080 |
| MINIMUM TENSILE STRENGTH CQBC | POUNDS PER SQUARE INCH 180000 |
| HARDNESS RATING CQFM | ROCKWELL C MINIMUM 40.0 AND ROCKWELL C MAXIMUM 43.0 |
| SURFACE FINISH CSYM | OUTER MICROINCHES 32.0 |
| SPECIAL FEATURES FEAT | SHPERICAL RADIUS 0.365 IN. MIN,0.385 IN. MAX,COLOR NATURAL |
| MATERIAL MATT | OVERALL STEEL COMP 630 |
| SURFACE TREATMENT SFTT | OVERALL NICKEL AND CADMIUM |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION STDC | OVERALL ASSN STD SINGLE TREATMENT RESPONSE A-S 2416 |
| STYLE DESIGNATOR STYL | — |
| SPECIFICATION/STANDARD DATA ZZZK | MANUFACTURERS STANDARD 81205-BACW10CA |
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 |
|---|---|---|
| 70188-3 | 56878 | SPS TECHNOLOGIES, LLC DBA PB FASTENERS |
| 70188-3 | 71838 | SPS TECHNOLOGIES AFG DIV |
| 70188-3 | 80539 | SPS TECHNOLOGIES, LLC DBA AEROSPACE FASTENERS GROUP DIV AEROSPACE - SANTA ANA |
| 942007-3 | 60119 | MONADNOCK COMPANY, THE DBA LISI AEROSPACE |
| BACW10CA3CV | 15653 | HOWMET GLOBAL FASTENING SYSTEMS INC |
| BACW10CA3CV | 56878 | SPS TECHNOLOGIES, LLC DBA PB FASTENERS |
| BACW10CA3CV | 60119 | MONADNOCK COMPANY, THE DBA LISI AEROSPACE |
| BACW10CA3CV | 80539 | SPS TECHNOLOGIES, LLC DBA AEROSPACE FASTENERS GROUP DIV AEROSPACE - SANTA ANA |
| BACW10CA3CV | 81205 | THE BOEING COMPANY DIV DEFENSE |
| BACW10CA3CV | Z03F0 | BOEING DEFENCE AUSTRALIA LTD |
| BACW10CA3CV | Z8T75 | BOEING DEFENCE AUSTRALIA LTD DIV DEFENSE, SPACE & SECURITY |
| K29646-3 | 15653 | HOWMET GLOBAL FASTENING SYSTEMS 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
$0.67
Purchases
1
Total spend
$251.92
Sep 28, 2026
Last purchased
2 · 2.0/yr
Purchase records
$503.84
Total demand
$0.67
Latest unit price
Purchase history
| Awarded | Qty | Unit price | Total | Supplier | Agency | Source |
|---|---|---|---|---|---|---|
| Sep 28, 2026 | 376 | $0.67 | $251.92 | ALAMO AIRCRAFT, LTD. (55345) | 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 28, 2026 | SPE4A626V408J ↗ | ALAMO AIRCRAFT, LTD. | — | $251.92 |
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.
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
ALAMO AIRCRAFT, LTD.
last award Sep 2026
BOEING DEFENCE AUSTRALIA LTD
no award yet
no awards on record
Listed source BOEING DEFENCE AUSTRALIA LTD DIV DEFENSE, SPACE & SECURITY
no award yet
no awards on record
Listed source HOWMET GLOBAL FASTENING SYSTEMS INC
no award yet
no awards on record
Listed source MONADNOCK COMPANY, THE DBA LISI AEROSPACE
no award yet
no awards on record
Listed source SPS TECHNOLOGIES AFG DIV
no award yet
no awards on record
Listed source SPS TECHNOLOGIES, LLC DBA AEROSPACE FASTENERS GROUP DIV AEROSPACE - SANTA ANA
no award yet
no awards on record
Listed source SPS TECHNOLOGIES, LLC DBA PB FASTENERS
no award yet
no awards on record
Listed source ALAMO AIRCRAFT, LTD. won the only award on record. ALAMO AIRCRAFT, LTD. won without being a listed source.
| Solicitation | Issued | Closes / closed | Qty | Status | |
|---|---|---|---|---|---|
| SPE4A6-26-T-35RW | Sep 23, 2026 | Sep 30, 2026 | 376 | 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: 2026-10-04.
- Full methodology →
Cite this page
Citation
NSN Explorer. "WASHER,CONVEX." nsnexplorer.com, https://nsnexplorer.com/nsn/5310-01-105-0548/. Data as of October 19, 2026.
Link
https://nsnexplorer.com/nsn/5310-01-105-0548/