1/2 Plastic Knockout Bushings
Manufacturer Resources
Product Specs
- Division:
- Electrical H1
- Product Group:
- Conduit & Raceway
- Sub Division:
- Electrical-E H2
- Department:
- Electrical
- Product Subgroup:
- Conduit Fittings
- Product Type:
- Conduit Bushing
Metallics KOB50 – Frequently Asked Questions
1) What is a plastic knockout bushing like the KOB50 actually used for?
It snaps into an unused or oversized knockout to line the hole, so conductors passing through the sheet metal edge are not cut or abraded. Electricians also use them to close off and finish a knockout that has been opened. The KOB50 covers the 1/2 inch size.
2) Is the Metallics KOB50 plastic or metal?
Plastic. That makes it non-conductive, which is why it is used as a liner where wires pass through a metal knockout, but it is not a grounding or bonding fitting and it is not a substitute for a metal conduit connector on a raceway run.
3) What part number do I order for the 1/2 inch Metallics knockout bushing?
Order Metallics KOB50. That is the single model covering the 1/2 inch plastic knockout bushing, so there is no finish or material option to specify with it.
How fast can I get the Metallics KOB50 delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the
continental
U.S.
Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit,
reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Metallics KOB50 come with a warranty?
Absolutely. The Metallics KOB50 is backed by a manufacturer’s warranty.
For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the Metallics KOB50?
You can call, text, or email our expert support team for fast answers. We’re here to help with
product
selection,
installation tips, and troubleshooting. Contact Us
Why buy the Metallics KOB50 from ZenSupply?
ZenSupply makes it easy to get the commercial door hardware you need—fast shipping, expert support,
and
rewards on
every order.
Our team is always ready to help you choose the right product for your project.