Flattened & Pierced: Used on receptacles with soldered-in glass hermetic seals. The seal pin is flattened and cross-drilled to provide a hole for soldering wire.

Slotted: Circuit fits into slot in contact.

Socket: Female contact in rear of receptacle slides over male pin connected to circuitry, or pin of separate hermetic seal.

Solder Pot: Wire conductor is placed into hole drilled in rear of contact and soldered.

Straight: Rear of contact is soldered or otherwise bonded to circuitry.

Tab: Rear of contact is milled to a flat tab for better electrical transition to circuitry.

Turret: Wire conductor is wrapped around contact and soldered.