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| PartNumber | 420051A18 | 420053B14 | 420051B14 |
| Description | Knobs & Dials Machined Alumin Knob | Knobs & Dials Machined Alumin Knob | Knobs & Dials Machined Alumin Kno |
| Manufacturer | Apem | Apem | Apem Inc. |
| Product Category | Knobs & Dials | Knobs & Dials | Knobs |
| RoHS | Y | Y | - |
| Product | Knobs | Knobs | - |
| Type | Cylindrical Knob | Cylindrical Knob | Knurled, Straight |
| Shaft Diameter | 1/8 in | 1/4 in | - |
| Outside Diameter | 13 mm | 19 mm | - |
| Height | 17 mm | 17 mm | 0.638" (16.21mm) |
| Material | Aluminum | Aluminum | Metal |
| Design | Knurled, Straight | Knurled, Straight | - |
| Color | Silver | Black | Black |
| Indicator Style | Arrow on Top | Arrow on Top | - |
| Series | 42005 | 42005 | 42005 |
| Brand | Apem | Apem | - |
| Indicator Color | Black | White | - |
| Product Type | Knobs & Dials | Knobs & Dials | - |
| Factory Pack Quantity | 1000 | 25 | - |
| Subcategory | Knobs & Dials | Knobs & Dials | - |
| Style | - | - | Cylindrical |
| Diameter | - | - | 0.500" (12.70mm) |
| Shaft Size | - | - | 0.250" (6.35mm) |
| Indicator | - | - | Arrow on Top |