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🔧 Elevate your fastening game with pro-grade stainless steel washers!
The Instockbolts M10 x 20mm OD Flat Washer set includes 50 precision-engineered washers made from durable 18-8 (304) stainless steel. Designed to fit M10 bolts perfectly, these corrosion-resistant washers offer reliable load distribution in a slim profile, making them a top choice for industrial and scientific applications.

| ASIN | B0BGHC1NN7 |
| Best Sellers Rank | #2,149 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #12 in Flat Washers |
| Brand | Instockbolts |
| Color | Silver 304 |
| Customer Reviews | 4.8 out of 5 stars 1,238 Reviews |
| Exterior Finish | Stainless Steel |
| Fastener Size | M10 |
| Fastener Type | Flat Washer |
| Finish Types | Polished |
| Item Diameter | 20 Millimeters |
| Item Dimensions | 0.39 x 0.39 x 0.04 inches |
| Item Thickness | 20 Millimeters |
| Manufacturer | Instockbolts |
| Material | Stainless Steel |
| Material Type | Stainless Steel |
| Metal Type | Stainless Steel |
| Model | M10 |
| Number Of Items | 50 |
| Number of Pieces | 50 |
| Outside Diameter | 20 Millimeters |
| Part Number | M10 |
| Screw Head Style | Flat |
| Set Name | 50pcs M10 Stainless Steel Flat Washers |
| Size Name | M10/304 |
| Thread Size | M10 |
| UPC | 740727238576 |
| Unit Count | 50.0 Count |
| Washer Application | General Purpose |
| Washer Compatibility | M10 bolts |
| Washer Type | Flat |
D**G
Work as wheel spacers great product
Excellent quality product used as axlr spacer on my high power racing scooter worked great true M14 washer hard steel not cheap alloy.
D**S
Good value
These are good quality and a really good value
A**R
No problems
Good washers
J**Y
Work perfectly - great fitment, finish etc
Great deal on a 100 pack of washers - Do I need 100 of them? Well no. But it's cheaper and easier to get 100 here on Amazon than pay the same or more at the hardware store, plus make the trip down there. These things are solid, spec is good on the size. GREAT finish and fitment. Stainless steel so they won't rust. I'm very happy with them.
J**L
Good product.
Product as advertised. Shipping was quick.
A**S
Good Price
Nice product, arrived on time.
R**Z
Came exactly as described
Came exactly how described Took 3 days to receive
J**Z
Just as advertise
They worki great
A**E
Top
Gut
U**.
einwandfreie Qualität
einwandfreie Qualität, gute Verarbeitung, nix zu meckern
G**I
Passt
Passt
R**.
Falsche Beschreibung oder falsche Lieferung.
Statt 21,0 mm nur 19,5 mm Durchmesser. Hatte mir eigentlich was dabei gedacht. Nun nicht verwendbar. (Edelschrott).
T**B
Irreführende Bilder
Die gelieferte Ware passt nicht zu den Bildern. Und dann sind die Unterlegscheiben auch noch kleiner als angegeben. 11,7 Durchmesser, 6,4 Lochdurchmesser und 1,4 Dicke.
Trustpilot
2 weeks ago
3 days ago