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$162.35
$9.69
COVER PLUG 3/4 INCH - 14 NPS THREAD
Manufacturer Resources
Product Specs
- Country Of Origin:
- United States
- Number Of Knockouts:
- 0
- Product Type:
- Floor Box Cover
- Selling Unit Of Measure:
- each
- Department:
- Electrical
- Product Group:
- Boxes & Enclosures
- Product Subgroup:
- Floor Boxes
- Product Type2:
- Flush Service
- Product Material:
- Brass
Steel City 691 SC – Frequently Asked Questions
1) What thread does the Steel City 691 SC floor box cover plug use?
The 691 SC plug is threaded 3/4 inch - 14 NPS, so it threads into a 3/4 inch straight-pipe-thread opening in a floor box cover or service plate. NPS is a straight thread, not tapered, so it seats flush rather than wedging in like an NPT fitting.
2) What is the difference between the Steel City 691 SC cover plug and the Pass & Seymour TM1542 series brass floor box cover?
They solve two different parts of the same opening. The Steel City 691 SC is a brass cover plug with a 3/4 inch - 14 NPS thread that screws into a threaded service opening in a floor box cover to close it off when the outlet is not in use. The Pass & Seymour TM1542 series brass cover is the floor box cover assembly itself, and it is tamper-resistant. If the floor box already has its cover and you only need to seal an unused 3/4 inch threaded port, the 691 SC plug is the piece; if the cover plate itself is missing or being changed out, the TM1542 series brass cover is the item to look at.
3) I need to add audio/video connections to a floor box instead of plugging the opening. What should I use?
The Steel City 691 SC is a brass cover plug for a 3/4 inch - 14 NPS threaded opening, so it closes a service port rather than terminating anything through it. For running audio/video connections, the Wiremold 828MAAP is a sheet metal audio/video adapter plate for the OmniBox series, which is built to carry A/V connectors at the floor box opening. Use the 691 SC where the port is to stay sealed and the adapter plate where signal connections pass through.
4) What is the Steel City 691 SC actually for?
It plugs an unused 3/4 inch threaded service opening in a flush floor box cover. When a floor box has a receptacle or communications opening you are not using, the brass plug closes it off so dirt, mop water and debris stay out of the box and the cover stays flush with the finished floor.
5) Is the Steel City 691 SC plug brass, and will it hold up in a lobby or retail floor?
Brass construction. That is the standard material for flush floor service plugs in finished spaces because it takes foot traffic and cleaning chemicals without rusting, and it matches brass floor box covers already in the floor.
6) What are my options if I need a full floor box cover instead of just a plug?
The 691 SC only fills a 3/4 inch threaded hole. For a complete brass cover assembly, Pass and Seymour's TM1542 Series tamper-resistant brass floor box cover is the cover-level option. If the floor box needs an audio/video connection point, Wiremold's 828MAAP adapter plate for the OmniBox series is a sheet metal AV adapter plate rather than a blank plug.
7) Does the Steel City 691 SC come with knockouts?
No knockouts. It is a solid brass closure plug, so there is nothing to punch out and no path for wire through it. If you need an opening for low-voltage or AV cable instead of a blank, you want an adapter or service plate rather than this plug.
8) Is the 691 SC sold individually or in a pack?
Sold each, so you can order exactly the count you need to blank off the openings on the job rather than buying a carton.
9) Both the Steel City 691 SC and the Pass & Seymour TM1542 cover are brass. Does that mean they match visually?
Both are brass parts for floor boxes: the Steel City 691 SC is a brass cover plug for a 3/4 inch - 14 NPS thread, and the Pass & Seymour TM1542 series floor box cover is also a brass cover. Brass finishes vary by manufacturer and by how a brass part weathers in traffic, so if the plug and the surrounding cover need to look like a set, confirm the finish on both before standardizing a floor across a building.
How fast can I get the Steel City 691 SC 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 Steel City 691 SC come with a warranty?
Absolutely. The Steel City 691 SC 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 Steel City 691 SC?
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 Steel City 691 SC from ZenSupply?
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and
rewards on
every order.
Our team is always ready to help you choose the right product for your project.