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Nut 1-1/4-7 Hx Nut St-Zn (50pcs)
Manufacturer Resources
Product Specs
- Division:
- Electrical H1
- Product Group:
- Fasteners
- Sub Division:
- Electrical-E H2
- Department:
- Electrical
- Product Subgroup:
- Nuts
Metallics N178 – Frequently Asked Questions
1) What thread size is the Metallics N178 hex nut?
The N178 is a 1-1/4-7 hex nut, meaning a 1-1/4 inch nominal diameter with 7 threads per inch, which is the standard UNC coarse pitch at that diameter. It mates with 1-1/4 inch coarse-thread rod or bolts, so if your rod is 1-1/4-12 fine thread it will not run on.
2) Will the Metallics N178 nut thread onto 1-1/4 inch all-thread hanger rod?
Yes, provided the rod is coarse thread. Threaded rod in 1-1/4 inch is normally supplied 1-1/4-7 UNC, which is exactly what this nut is cut for. Common use is anchoring or doubling up as a jam nut on large trapeze and strut hanger assemblies.
3) Are Metallics N178 nuts steel or stainless, and are they coated?
Steel with a zinc plating, not stainless. Zinc plating handles dry indoor and protected electrical and mechanical work. For wet exterior, coastal, or corrosive runs, specify a hot dip galvanized or stainless nut instead.
4) How many nuts come in a pack of Metallics N178?
50 pieces per pack. That matters if you are buying for a single anchor set rather than a run, since the nut is sold by the 50 count box, not individually.
5) Can I use a 1-1/4-7 zinc plated hex nut outdoors on a rooftop unit?
Not a good choice. The N178 is zinc plated steel, which is a light duty finish meant for interior or protected locations. Exposed rooftop, below grade, or washdown environments will break down zinc plating over time; use hot dip galvanized or stainless at those diameters.
6) Is the Metallics N178 a plain hex nut or a lock nut?
It is a plain finished hex nut, with no nylon insert and no distorted thread locking feature. If you need vibration resistance, pair it with a second nut as a jam nut, a lock washer, or order a nylon insert lock nut in the same 1-1/4-7 thread.
7) What wrench size do I need for a 1-1/4-7 hex nut?
A 1-1/4-7 hex nut in the standard heavy pattern takes a 1-7/8 inch or 2 inch wrench depending on pattern, so plan on a large open end, a socket on a breaker bar, or an impact. These are not a channel lock job at this diameter.
How fast can I get the Metallics N178 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 N178 come with a warranty?
Absolutely. The Metallics N178 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 N178?
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 N178 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.