# Flat Washer, Fits Bolt Size 1/2 in ,Steel Black Oxide Finish, 25 PK

**Manufacturer:** Zoro Select  
**MPN:** `Z9099`

## Specifications

| Attribute | Value |
| --- | --- |
| Brand name | Zoro Select |
| Manufacturer name | Zoro Select |
| Manufacturer | Zoro Select |
| CategoryId | 4958 |
| CategoryIdL1 | 9 |
| CategoryIdL2 | 4385 |
| CategoryIdL3 | 15199 |
| CategoryIdL4 | 4958 |
| CategoryL1 | Fasteners |
| CategoryL2 | Washers |
| CategoryL3 | General Washers |
| CategoryL4 | Flat Washers |
| DimensionUnit | inch |
| GraingerSku | 5RU59 |
| Extra Product Name | Flat Washer, Fits Bolt Size 1/2 in ,Steel Black Oxide Finish, 25 PK |
| UPC | None |
| UnitOfMeasure | PK |
| Weight | 0.6 |
| WeightUnit | lbs |
| atoms | 25 |
| cali_prop65_orglabel | False |
| cali_prop65_whtlabel | False |
| color | Black |
| countryOfOrigin | US |
| height | 1 |
| jsonUrlData | 924526ffbdad25e5923b |
| length | 4 |
| moq | 1 |
| MPN | Z9099 |
| multiple | 1 |
| qtyInStock | 875 |
| qtyInStockOverride | -2 |
| SKU | G1552503 |
| tierMinQty1 | 1 |
| tierPrice1 | 8.29 |
| url | https://www.zoro.com/zoro-select-flat-washer-fits-bolt-size-12-in-steel-black-oxide-finish-25-pk-z9099/i/G1552503/ |
| width | 2 |
| Fits Bolt Sizes | 1/2 in |
| Washer Outside Dia | 1 1/8 in |
| Washer Inside Dia | 17/32 in |
| Inside Dia | 17/32" |
| Outside Diameter | 1 1/8 in |
| Inside Diameter | 0.531 in |
| Pack Size | Small Pack |
| For Screw Size | 1/2 in |
| Inside Diameter Tolerance | +/-0.010 in |
| Outside Diameter Tolerance | +/-0.010 in |
| Item | Flat Washer |
| Material | Steel |
| Finish | Black Oxide |
| Thickness | 0.120 in to 0.130 in |
| Washer Standards | N/A |
| System of Measurement | Inch |
| Flat Washer Type | Thick Flat Washer |
| Package Quantity | 25 |
| Application | Load Distributing |
| Rockwell Hardness | 16N80 |
| Thickness Tolerance | +0.005/-0.004 in |
| Color | Black |
| Type | Standard |

## Distributor availability

| Distributor | SKU | Price (USD) | Qty | Stock | MOQ |
| --- | --- | --- | --- | --- | --- |
| Zoro | G1552503 | 8.29 | 1 | 875 | 1 |

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Structured data: `/python/html6/product/500/163000000/163398500/part_--Z9099---ZoroSelect--dee1fe00c5.json`  
Search API: https://www.dataalchemy.com/api/  
MCP server: https://www.dataalchemy.com/mcp