Control Parts: Siemens & Klockner Replacement Parts Distributor

Siemens Sirius and Klockner Moeller Eaton stocking distributor: relays, contactors, limit switches, plcs, fuses

Home Siemens Sirius Contactors, Relays & Controls Klockner Moeller Electric Eaton Catalog Index
Buy Direct | Call To Order
(717) 209-7100

Same Day Shipping | Knowledgeable Staff
Nationwide order desk and technical support

Phillips or PoziDriv ??


PoziDriv Screwdriver: $10.00 - Required for IEC electrical parts

Phillips and PoziDriv bits, despite their similar appearance, are two systems that are not interchangeable. Here’s how to tell the difference between them:

The Phillips bit has a self-centering design. Phillips bits have an intentional angle on the flanks and rounded corners so they will cam out of the slot before twisting off the head. The most common Phillips sizes are 1, 2, and 3 (from smallest to largest). Phillips bits typically have “PH” indicated on them.

The PoziDriv also has a self-centering design, but the shape is modified for improved engagement. The sure sign that a screw is PoziDriv is the four slots cut into the face of the screw. A PoziDriv has ribs between each of the four arms of the cross. This adds the increased grip. The most common PoziDriv sizes are 1, 2, and 3 (from smallest to largest). PoziDriv bits typically have "PZ" indicated on them.

Note: Phillip’s drivers should not be used with PoziDriv screws (and vice versa) as they tend to ride out of the recess and will damage the driver and the screw. IEC electrical parts have PoziDriv screws.


PoziDriv screws have slots cut into the face of the screw head to set them apart from Phillips screws.

Contact Us | Klockner Moeller | Siemens Sirius | Eaton Parts Catalog
1671 Lincoln Highway East | Lancaster, PA. 17602
Call: (717) 209-7100 | FAX: (717) 209-7300
© 2018 Control Parts, All Rights Reserved. | Terms & Conditions