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These screw heads are useful for retaining electrical connection with test hooks because of the two collars. What are these type of screws called?

Screw heads shown attached to electrical test hooks. Screw head with multiple collars.

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  • \$\begingroup\$ Hooks ? for an RF connection? I guess for DC that's OK. \$\endgroup\$ – Tony Stewart Sunnyskyguy EE75 Mar 12 '19 at 1:03
  • \$\begingroup\$ @SunnyskyguyEE75 Yes you are right, these "turret terminals" are only used for the DC voltage supply for these Mini-Circuit devices. The RF input and outputs are through the other more identifiable BNC or SMA connections. \$\endgroup\$ – hobbes33 Mar 12 '19 at 22:16
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It's a turret terminal.

Surprisingly, the only other question I can remember about this kind of part was asked just yesterday.

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    \$\begingroup\$ Wow, it's odd that someone else would ask what they were called, knowing what they're for, the day after I asked what they're for, knowing what they're called! \$\endgroup\$ – Hearth Mar 12 '19 at 1:14

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