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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PM
Boise, US
★★★★★ 5
Good product for the price
I bought for my Worx trimmer and they work great. Even though Worx offers free replacements, when you add shipping onto the "Free" order..it costs more...this price is well worth it.
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Reviewed in the United States on May 26, 2026
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Liv2Read
New York, US
★★★★★ 5
Fits my weed eater perfectly
Fits perfect and does a great job. Easy to install. 15 pcs will last a ling time
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Reviewed in the United States on May 2, 2026
S
Verified Purchase
Sherri Hensley
New York, US
★★★★★ 3
String breaks about halfway
Just as pictured. PROBLEM…..LINE BREAKS ABOUT THE MIDDLE OF THE SPOOL…. Wound so tightly that once you have used the first half it is impossible to use the rest…. So guess what…I have to buy more!
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Reviewed in the United States on May 29, 2026
J
Verified Purchase
JR1962
Omaha, US
★★★★★ 5
FAST. Powerful. Easy to use.
Size: 8" Edger New
WOW! I bought a new house a couple of months ago, and the landscaping company overlapped the edge of the driveway with the sod. I've bee trying to trim it back with my string trimmer, but the results were less than desirable. I got my new edger today, and I am astonished at the results! ruler straight edging, 2 1/2" deep and 1/4" wide. PERFECT! . . . and the whole front yard took less than 10 minutes! The edger is very powerful - it easily cut through the sod, deep into the dirt underneath leaving a nice clean edge. My neighbor has a lawncare company, and he was watching me. He came over and said he was going to get one for his jobs, as it is much faster and easier to use.
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Reviewed in the United States on July 21, 2025
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Verified Purchase
Abby L
New York, US
★★★★★ 5
Easy to edge with
Size: 8" Edger New
This works great to edge an overgrown area like sidewalk and driveway. Super effective and easy to use.
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Reviewed in the United States on May 18, 2026

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