# Flat Washer, Fits Bolt Size M20 ,Steel Black Oxide Finish, 10 PK

**Manufacturer:** Zoro Select  
**MPN:** `Z8820`

## Specifications

| Attribute | Value |
| --- | --- |
| Brand name | Zoro Select |
| Manufacturer name | Zoro Select |
| Manufacturer | Zoro Select |
| CategoryId | 4958 |
| DimensionUnit | inch |
| GraingerSku | 5RE94 |
| Extra Product Name | Flat Washer, Fits Bolt Size M20 ,Steel Black Oxide Finish, 10 PK |
| UPC | None |
| UnitOfMeasure | PK |
| Weight | 0.33 |
| WeightUnit | lbs |
| atoms | 10 |
| cali_prop65_orglabel | False |
| cali_prop65_whtlabel | False |
| color | Black |
| countryOfOrigin | US |
| height | 0.6 |
| jsonUrlData | 924526ffbdad25e5923b |
| length | 4 |
| moq | 1 |
| MPN | Z8820 |
| multiple | 1 |
| qtyInStock | 157 |
| qtyInStockOverride | -2 |
| SKU | G0590694 |
| tierMinQty1 | 1 |
| tierPrice1 | 9.35 |
| url | https://www.zoro.com/zoro-select-flat-washer-fits-bolt-size-m20-steel-black-oxide-finish-10-pk-z8820/i/G0590694/ |
| width | 1.5 |
| Fits Bolt Sizes | M20 |
| Washer Outside Dia | 35 mm |
| Washer Inside Dia | 21 mm |
| Inside Dia | 21mm |
| Inside Diameter | 21 mm |
| Outside Diameter | 35 mm |
| Pack Size | Small Pack |
| Inside Diameter Tolerance | +/-0.010 in |
| Outside Diameter Tolerance | +/-0.010 in |
| For Screw Size | M20 |
| Item | Flat Washer |
| Material | Steel |
| Finish | Black Oxide |
| Thickness | 3 mm to 3.4 mm |
| Washer Standards | N/A |
| System of Measurement | Metric |
| Package Quantity | 10 |
| Application | Load Distributing |
| Rockwell Hardness | 16N80 |
| Thickness Tolerance | +0.40mm/-0.50mm |
| Flat Washer Type | Thick Flat Washer |
| Color | Black |
| Type | Standard |
| Material Type | Steel |

## Distributor availability

| Distributor | SKU | Price (USD) | Qty | Stock | MOQ |
| --- | --- | --- | --- | --- | --- |
| Zoro | G0590694 | 9.35 | 1 | 157 | 1 |

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Structured data: `/python/html6/product/500/221000000/221262500/part_--Z8820---ZoroSelect--35def20623.json`  
Search API: https://www.dataalchemy.com/api/  
MCP server: https://www.dataalchemy.com/mcp