WASHER,FLAT
Price to win
From deduped DIBBS award lines (unit cost × quantity). Not a bid recommendation — observed history only.
Average unit cost
$23.54
Weighted average
$1.37
Weighted by quantity
Observed range
$0.38–$96.28
Coverage
6 awards
Apr 6, 1999 – Nov 14, 2025
Average: $23.54 · Weighted avg: $1.37 · Range: $0.38–$96.28 · Based on 6 awards, Apr 6, 1999–Nov 14, 2025.
Unit cost by award date · 6 priced lines
DIBBS award history
Distinct award lines for this NSN (deduped). Line total is unit cost × quantity.
6 distinct award lines
| Date | Manufacturer | Qty × unit | Total | Contract |
|---|---|---|---|---|
| Nov 14, 2025 | 4U6M9AMERICAN DEFENSE COMPONENTS, LLCSTAMPS, ARSAM | 2 × $96.28 | $193 | SPE4A626V3132P00002 |
| Apr 24, 2025 | 4U6M9AMERICAN DEFENSE COMPONENTS, LLCSTAMPS, ARSAM | 20 × $32.00 | $640 | SPE4A625PQ169P00002 |
| Apr 29, 2024 | 71L70SMITH & JAMISON CORPORATIONCORAOPOLIS, PASAM | 20 × $4.99 | $100 | SPE4A624PM973 |
| Feb 7, 2023 | 4U6M9AMERICAN DEFENSE COMPONENTS, LLCSTAMPS, ARSAM | 197 × $4.27 | $841 | SPE4A623PC379 |
| Aug 12, 2005 | 68608SPACE COMPONENT SUPPLYVISTA, CASAM | 1,546 × $0.38 | $580 | SPM54005V2891 |
| Apr 6, 1999 | 0ABX9BRITMAR INCTEMECULA, CASAM | 50 × $3.32 | $166 | SP050099AA8541090 |
Manufacturers who have won this NSN
Distinct CAGEs with a confirmed DIBBS award line for this part — each opens the manufacturer page.
Approved manufacturers
Qualified to supply per MCRL — no confirmed DIBBS award on record for this NSN. Each CAGE opens the manufacturer page.
PN SS4409-091
Characteristics
FLIS item characteristics from PUB LOG identification.
| Characteristic | Value |
|---|---|
| HOLE DIAMETER | INCHES NOMINAL 0.515 |
| MATERIAL | OVERALL STEEL COMP 4130 |
| MATERIAL DOCUMENT AND CLASSIFICATION | OVERALL MIL SPEC ALL MATERIAL RESPONSES -IL-S-18729 COND N |
| OVERALL DIAMETER | INCHES NOMINAL 0.844 |
| SURFACE TREATMENT | OVERALL CADMIUM |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | OVERALL NATIONAL SPEC ALL TREATMENT RESPONSES Q-Q--416 |
| THICKNESS | INCHES NOMINAL 0.040 |
Open buys
DIBBS · quotes by Sep 30, 2026 · UNRESTRICTED