# For Screw Size 1 in, Stainless Steel, Square Washer - 420R45|Z8781-188 - Grainger

**Manufacturer:** GRAINGER APPROVED  
**MPN:** `Z8781-188`

## Specifications

| Attribute | Value |
| --- | --- |
| Brand name | GRAINGER APPROVED |
| Manufacturer name | GRAINGER APPROVED |
| Manufacturer | GRAINGER APPROVED |
| CategoryL1 | Fasteners |
| CategoryL2 | Washers |
| CategoryL3 | Flat Washers |
| DimensionUnit | inch |
| Hazmat | False |
| Extra Product Name | For Screw Size 1 in, Stainless Steel, Square Washer - 420R45\|Z8781-188 - Grainger |
| countryOfOrigin | USA |
| diameter | 1.063 |
| height | 1.063 |
| height_Attrib | Inside Diameter |
| length | 1.063 |
| length_Attrib | Inside Diameter |
| moq | 1 |
| MPN | Z8781-188 |
| multiple | 1 |
| qtyInStock | -2 |
| qtySource | getStockDataForSku |
| SKU | 420R45 |
| tierMinQty1 | 1 |
| tierPrice1 | 34.57 |
| width | 4.0 |
| width_Attrib | Square Width |
| Item? | 420R45 |
| Mfr Model? | Z8781-188 |
| Catalog Page | N/A |
| Type | Square |
| Dimensional Standards | ASTM A582 |
| Material | Stainless Steel |
| Material Grade/Class | Not Graded |
| Finish | Plain |
| For Screw Size | 1 in |
| Inside Diameter | 1.063 in |
| Square Width | 4 in |
| Maximum Thickness | 0.515 in |
| System of Measurement | Inch |
| Pack Size | Small Pack |
| Brand | GRAINGER APPROVED |
| Manufacturer Part Number | Z8781-188 |
| Minimum Thickness | 0.485 in |
| Rockwell Hardness | B83 |
| Sub-brand | AMPG |
| Tensile Strength | 90,000 psi |
| Thickness Tolerance | +/-0.031 in |
| UNSPSC | 31161812 |
| Country of Origin | USA |

## Distributor availability

| Distributor | SKU | Price (USD) | Qty | Stock | MOQ |
| --- | --- | --- | --- | --- | --- |
| Grainger | 420R45 | 34.57 | 1 | None | 1 |
| Zoro | G2108117 | 20.9 | 1 | None | 1 |
| grainger.ca | WWG420R45 | 25.59917762 | 1 | None | 1 |

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