| PartNumber | 1921B | 1921C | 1921A |
| Description | Standoffs & Spacers 4-40 .500 HEX STDOFF | Standoffs & Spacers 4-40 .750 HEX STDOFF | Standoffs & Spacers 4-40 .375 HEX STDOFF |
| Manufacturer | Keystone Electronics | Keystone Electronics | Keystone Electronics |
| Product Category | Standoffs & Spacers | Standoffs & Spacers | Standoffs & Spacers |
| RoHS | Y | Y | Y |
| Product | Standoffs | Standoffs | Standoffs |
| Type | Hex | Hex | Hex |
| Thread Size | 4-40 | 4-40 | 4-40 |
| Length | 0.5 in | 0.75 in | 0.375 in |
| Material | Stainless Steel | Stainless Steel | Stainless Steel |
| Outside Diameter | 0.25 in | 0.25 in | 0.25 in |
| Brand | Keystone Electronics | Keystone Electronics | Keystone Electronics |
| Product Type | Standoffs & Spacers | Standoffs & Spacers | Standoffs & Spacers |
| Factory Pack Quantity | 100 | 100 | 100 |
| Subcategory | Hardware | Hardware | Hardware |