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Slip-on Locknuts 5/16-18 St-zn (Bag 5)
Manufacturer Resources
Product Specs
- Division:
- Electrical H1
- Pack Type:
- Bag
- Product Group:
- Fasteners
- Sub Division:
- Electrical-E H2
- Department:
- Electrical
- Product Subgroup:
- Nuts
Metallics SLN516 – Frequently Asked Questions
1) What thread size are Metallics SLN516 slip-on locknuts?
The SLN516 slip-on locknut is a 5/16-18 thread, so it mates with 5/16 inch coarse-thread rod or bolt. That is the common size for trapeze hangers and strut-mounted conduit runs where 5/16-18 all-thread is already in the ceiling. If your rod is 3/8-16, this is the wrong nut.
2) Can I use SLN516 slip-on locknuts for electrical conduit and fixture hanging?
That is what they are for. The SLN516 is an electrical fastener, sized 5/16-18 for the threaded rod used to hang conduit racks, strut, junction boxes, and light fixtures. It is not a conduit locknut for securing a fitting to a box knockout, which is a different part entirely with no machine thread size like this.
3) How is a slip-on locknut different from a standard hex nut on threaded rod?
A slip-on nut pushes straight up the rod to position instead of being spun the full length, then locks under load. On a long drop rod that saves the time of running a hex nut down several feet, and it holds without a second jam nut. Where you need a nut you will back off and readjust repeatedly, a conventional 5/16-18 hex nut and washer is the easier choice.
4) Are Metallics SLN516 locknuts steel or stainless, and are they plated?
Steel with zinc plating (the St-zn in the description). Zinc plated steel is fine for dry interior work, plenum runs, and conditioned mechanical rooms. For exterior, wet locations, or corrosive environments, specify a stainless fastener instead.
5) How many nuts come in a bag of Metallics SLN516?
Five nuts per bag. Count your drops before ordering: a run of trapeze hangers on 5/16-18 rod burns through them fast, so most jobs take several bags rather than one.
How fast can I get the Metallics SLN516 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 SLN516 come with a warranty?
Absolutely. The Metallics SLN516 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 SLN516?
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 SLN516 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.