Hillman 3/8 in.-16 Zinc-Plated Steel USS Whiz Lock Nut, 100-Pack
SKU: 49921244738

Hillman 3/8 in.-16 Zinc-Plated Steel USS Whiz Lock Nut, 100-Pack

Sale price$16.19 Regular price$17.99
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Description

Hillman 3/8 in.-16 Zinc-Plated Steel USS Whiz Lock Nut, 100-Pack3 8 in. 16 Zinc Plated USS Whiz Lock Nut (100 Pack) These Hillman Whiz lock nuts feature an all metal, serrated flange design that resists loosening under vibration. Made of zinc plated steel for moderate corrosion resistance, theyre ideal for securing 3 8 in. 16 coarse thread fasteners in demanding applications. Key Features: All Metal Construction: Withstands heavy vibration and shock without loosening Serrated Flange Locking: Ratchet tooth

3/8 in.-16 Zinc-Plated USS Whiz Lock Nut (100-Pack)

These Hillman Whiz lock nuts feature an all-metal, serrated flange design that resists loosening under vibration. Made of zinc-plated steel for moderate corrosion resistance, they’re ideal for securing 3/8 in.-16 coarse-thread fasteners in demanding applications.


Key Features:

  • All-Metal Construction: Withstands heavy vibration and shock without loosening
  • Serrated Flange Locking: Ratchet-tooth underside bites into material for a secure hold
  • 3/8 in.-16 USS Coarse Thread: Fits standard 3/8 in.-16 bolts and rods
  • Zinc-Plated Steel: Provides durable strength with moderate rust resistance
  • Bulk Pack Convenience: 100 pieces for jobsite or shop replenishment

Specifications Table:

Specification Details
Thread Size 3/8 in.-16 USS coarse
Material Steel
Finish Zinc-plated
Design All-metal, free-spinning nut with serrated flange (ratchet tooth underside)
Pack Quantity 100 pieces per retail package
Brand Hillman
Product Type Whiz Lock Nut
Hillman Item Number 180398

Frequently Asked Questions (FAQ):

Q: What bolt size do these nuts fit?
A: They are 3/8 in.-16 USS coarse thread and fit standard 3/8 in.-16 bolts or threaded rods.


Q: Do I need a washer with these?
A: Typically no—the integrated serrated flange spreads the load and helps prevent loosening.


Q: Are these reusable?
A: Yes, the all-metal serrated design is reusable and maintains locking performance when properly installed.


Q: Can they be used outdoors?
A: The zinc plating offers moderate corrosion resistance; for harsh or marine environments, consider higher corrosion-resistant finishes.


Q: How are they installed?
A: Thread onto a matching 3/8 in.-16 bolt and tighten with a compatible wrench; the serrations should face the mating surface.


Industrial Grip With Polished Poise

This serrated flange nut brings a refined, utilitarian edge to any project—its sculpted ratchet detailing is as striking as it is functional. I love the subtle sheen of the zinc finish, which catches light like jewelry for your hardware. Style it with exposed fasteners on custom shelving or mixed-metal furniture for a crisp, engineered look. It’s a small luxury that delivers big on stability and sophistication.


Secure your projects with confidence—add this 100-pack of Hillman Whiz lock nuts to your cart today.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 49921244738

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Verified Purchase
Amazon Customer
Omaha, US
★★★★★ 3
Multiple ports
Style: 20W_USB-C, Size: 10FT
The usb outlet broke within a week of purchase. The rest of the outlets work perfectly. Like that it has multiple ports to plug in.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 26, 2026
T
Verified Purchase
Treats86
Lowell, US
★★★★★ 5
Amazing. A bit of a job to set it up but worth it!
Color: Black, Color: Black
Excellent quality. Sturdy and strong. The screws that come with it are awful. Get yourself some different ones. Takes a while to set it up and get it all measured. I did it while I was setting up my new Flexi-spot E7 Plus standing desk. Wanted to get it all done at the same time. At first. I thought it might be overkill, but I am sooooo glad I did get this. Now my computer moves along with the desk. It looks great. I bet it has improved the air flow around my computer as well. Looks sleek and cool. I might have set it a bit too tight around my case and as a result I have to shimmy it to get it out of the holder if I have to do any work on the computers internals. But at least I know it's secure. My suggestion would be to leave a little bit of slack to avoid this in your setup. Maybe like a 1/4 inch would be ok. The pads should hold it in place anyway. May loosen mine up if I find the time. But it feels totally secure on the desk with no wobble or shaking. Great product. Also I'm a woman in my late fifties 😃and I was able to set it all up on my own. So don't be intimidated ladies, you can do it too. I also bought two of the ultimate set up cable management trays. Great products. Note for anyone from the Ultimate Setup company who might read this. Please provide better quality wood screws and some extra ones) I stripped three of the cheap ones that came with this. And it took forever to drill them in because they weren't strong enough. Then it would be perfect.
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Reviewed in the United States on November 17, 2025
N
Verified Purchase
Norman D Warren
Chelsea, US
★★★★★ 5
Solid, simple and perfect.
Color: Black, Color: Black
Great simple design. The quality is evident in the thickness of materials. The assembly instructions, hardware and tools provided help minimize the time spent from opening the box to install. This product is packaged well and shipped with the customer convenience in mind. Well done!
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Reviewed in the United States on May 26, 2026
A
Verified Purchase
Ashton Raum
Fort Morgan, US
★★★★★ 5
Awesome quality
Color: White, Color: White
Take your time installing! It comes with all the instructions and templates. Make sure you’re screwing this into solid wood. I would not recommend you hang your expensive PC from a particle board table. My Pc fits in well and it’s compatible with a ton of different sizes. Mine has been mounted under my desk for about 6 months and is rock solid. I will say, mine is balancing in there. If I don’t have it at its center of gravity, it could tip out. You can adjust it with the various screw holes but make sure you mount it into something solid.
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Reviewed in the United States on April 16, 2026
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Verified Purchase
Cameron
San Leandro, US
★★★★★ 5
Fantasic under-desk mounting solution for gaming PC
Color: White
This item comes with an incredible amount of tools and guides for making you successful in mounting your desktop PC under the desk. I am very impressed with the quality of the materials and also the quality of documents included. It feel very sturdy using the included hardware. I would recommend this item for anyone wanting to free up desktop space!
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Reviewed in the United States on March 27, 2026

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