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| Part Number | 1540-2 | 1540-3 | 1540-4 |
| Manufacturer | Keystone Electronics | Keystone Electronics | Keystone Electronics |
| Series | - | - | - |
| Packaging | Bulk | Bulk | Bulk |
| Product Status | Active | Active | Active |
| Terminal Type | Single End, Hollow | Single End, Hollow | Single End, Hollow |
| Number of Turrets | Single | Single | Single |
| Length - Above Board | 0.266" (6.76mm) | 0.266" (6.76mm) | 0.266" (6.76mm) |
| Length - Below Flange | 0.107" (2.72mm) | 0.137" (3.48mm) | 0.167" (4.24mm) |
| Length - Overall | 0.373" (9.47mm) | 0.403" (10.24mm) | 0.433" (11.00mm) |
| Mounting Type | Through Hole | Through Hole | Through Hole |
| Termination | Staking Flare | Staking Flare | Staking Flare |
| Flange Diameter | 0.156" (3.96mm) | 0.156" (3.96mm) | 0.156" (3.96mm) |
| Diameter - Turret Head | 0.120" (3.05mm) | 0.120" (3.05mm) | 0.120" (3.05mm) |
| Staking Side OD | 0.090" (2.29mm) | 0.090" (2.29mm) | 0.090" (2.29mm) |
| Staking Side ID | - | - | - |
| Mounting Hole Diameter | 0.094" (2.39mm) | 0.094" (2.39mm) | 0.094" (2.39mm) |
| Board Thickness | 0.062" (1.57mm) | 0.093" (2.36mm) | 0.125" (3.18mm) |
| Contact Material | Brass | Brass | Brass |
| Contact Finish | Tin | Tin | Tin |
| Contact Finish Thickness | - | - | - |
| Insulation | Non-Insulated | Non-Insulated | Non-Insulated |
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