# Flat Washer, Flat Washer Type Oversized, Material Stainless Steel, Material Grade/Class 18-8, Finish Plain, For Screw Size 5/16 in, Inside Diameter 0.344 in, Outside Diameter 3/4 in, Maximum Thickness 0.05 in, System of Measurement Inch, Minimum Thickness 0.05 in, Color Silver, Inside Diameter Tolerance +/-0.010 in, Material Quality Standards ASTM A582, Outside Diameter Tolerance +/-0.010 in, Pack Size Small Pack, Resistance Properties Chemical Resistant, Corrosion Resistant

**Manufacturer:** Zoro Select  
**MPN:** `Z0544-188`

## 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 |
| GTIN | None |
| GraingerSku | 6UKZ0 |
| UPC | None |
| UnitOfMeasure | PK |
| Weight | 0.47 |
| WeightUnit | lbs |
| cali_prop65_orglabel | False |
| cali_prop65_whtlabel | False |
| color | Silver |
| countryOfOrigin | US |
| height | 1.5 |
| jsonUrlData | 924526ffbdad25e5923b |
| length | 4 |
| moq | 1 |
| MPN | Z0544-188 |
| multiple | 1 |
| qtyInStock | 610 |
| qtyInStockOverride | -2 |
| SKU | G1594101 |
| tierMinQty1 | 1 |
| tierPrice1 | 18.25 |
| url | https://www.zoro.com/zoro-select-flat-washer-fits-bolt-size-516-in-stainless-steel-plain-finish-100-pk-z0544-188/i/G1594101/ |
| width | 2.5 |
| Fits Bolt Sizes | 5/16 in |
| Washer Outside Dia | 3/4 in |
| Washer Inside Dia | 11/32 in |
| Inside Dia | 11/32" |
| Outside Diameter | 3/4 in |
| Inside Diameter | 0.344 in |
| Inside Diameter Tolerance | +/-0.010 in |
| Outside Diameter Tolerance | +/-0.010 in |
| For Screw Size | 5/16 in |
| Item | Flat Washer |
| Material | Stainless Steel |
| Finish | Plain |
| Thickness | 0.045 in to 0.055 in |
| Washer Standards | Industry Standard |
| System of Measurement | Inch |
| Fastener Finish | Plain |
| Color | Silver |
| Washer Material Grade | 18-8 |
| Application | Load Distribution |
| Rockwell Hardness | B70 |
| Washer Basic Material | 18-8 Stainless Steel |
| Thickness Tolerance | +0.005/-0.004 in |

## Distributor availability

| Distributor | SKU | Price (USD) | Qty | Stock | MOQ |
| --- | --- | --- | --- | --- | --- |
| Zoro | G1594101 | 18.25 | 1 | 610 | 1 |
| grainger.ca | WWG6UKZ0 | 38.19191172 | 1 | None | 1 |

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Structured data: `/python/html6/product/500/224500000/224891500/part_--Z0544188---ZoroSelect--2b6aeb1f79.json`  
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