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This 325-piece copper washer kit offers 10 metric sizes (M5-M14) made from premium red copper, ensuring excellent heat resistance, corrosion protection, and electrical conductivity. Perfectly designed for secure sealing and pressure distribution, it’s ideal for automotive, marine, electronic, and industrial applications. Packaged in a durable, transparent organizer for quick access and efficient storage.







| ASIN | B0CR8XPH5P |
| Best Sellers Rank | #1,733 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #7 in Flat Washers |
| Brand | AKOSN |
| Color | Copper |
| Compatible Groove Diameter | 0.2 inches |
| Customer Reviews | 4.6 4.6 out of 5 stars (924) |
| Exterior Finish | Copper |
| Fastener Size | M5, M6, M8, M10, M12, M14 |
| Fastener Type | Flat Washer |
| Finish Types | Copper |
| Item Diameter | 10 millimeters |
| Item Dimensions | 5.35 x 3.81 x 0.7 inches |
| Item Thickness | 1-1.5 millimeters |
| Manufacturer | AKOSN |
| Material Type | Copper |
| Metal Type | Copper |
| Number Of Items | 1 |
| Number of Packs | 1 |
| Number of Pieces | 325 |
| Outside Diameter | 9-20 millimeters |
| Part Number | Flat_Washer_001 |
| Screw Head Style | Flat |
| Set Name | Premium Copper Metric Sealing Crush Washers Assortment Kit |
| Size Name | Copper - 325Pcs |
| Thread Size | Metric |
| Unit Count | 1 Count |
| Washer Compatibility | Metric Bolts, Metric Screws |
| Washer Type | Flat |
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