Hillman 5/16 in. Zinc-Plated Steel USS Whiz Lock Nut, 100-Pack
SKU: 87169144133

Hillman 5/16 in. Zinc-Plated Steel USS Whiz Lock Nut, 100-Pack

Sale price$13.49 Regular price$14.99
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Description

Hillman 5/16 in. Zinc-Plated Steel USS Whiz Lock Nut, 100-Pack5 16 in. Zinc Plated USS Whiz Lock Nut (100 Pack) Secure assemblies with these Hillman USS Whiz lock nuts. Made from zinc plated steel for corrosion resistance, they feature integrated serrations that bite into the mating surface to resist loosening from vibration. Ideal for general construction, automotive, and machinery applications using 5 16 18 threads. Key Features: Vibration Resistance: Built in serrations provide strong locking action without

5/16 in. Zinc-Plated USS Whiz Lock Nut (100-Pack)

Secure assemblies with these Hillman USS Whiz lock nuts. Made from zinc-plated steel for corrosion resistance, they feature integrated serrations that bite into the mating surface to resist loosening from vibration. Ideal for general construction, automotive, and machinery applications using 5/16-18 threads.


Key Features:

  • Vibration Resistance: Built-in serrations provide strong locking action without separate washers
  • Durable Build: Zinc-plated steel resists rust and wear for indoor/outdoor use
  • USS Threading: 5/16-18 coarse threads for common fastening applications
  • Flange Design: Distributes load and helps protect mating surfaces
  • Bulk Value: 100-pack for jobsites, shops, and replenishing inventory

Specifications Table:

Specification Details
Pack Quantity 100
Thread Size 5/16-18 (USS coarse)
Type Whiz lock nut / Serrated flange lock nut
Material Steel
Finish Zinc-plated
Brand Hillman

Frequently Asked Questions (FAQ):

Q: What thread size are these nuts?
A: They are 5/16-18 (USS coarse thread).


Q: Do I need a separate lock washer?
A: No. The serrated flange provides the locking action, eliminating the need for a lock washer in most applications.


Q: Are these suitable for outdoor use?
A: Yes. The zinc plating offers corrosion resistance; for harsh or marine environments, consider stainless or higher-grade coatings.


Q: Can these be used with slotted or oversized holes?
A: The flange helps distribute load, but for oversized holes ensure proper washer or hardware as needed.


Q: What tools are required?
A: Install with a standard wrench or socket sized for the hex across flats.


Industrial Grip with a Clean, Polished Finish

This serrated flange nut adds a sleek, utilitarian note to hardware details, catching the light with its zinc sheen. I love how the integrated flange creates a crisp, purposeful silhouette while delivering serious hold. Style it on exposed hardware moments—think garage shelving or workshop fixtures—for a refined, engineered look. It’s a small luxury in the language of precision.


Lock in reliable hold—add this 100-pack of 5/16-18 zinc-plated Whiz lock nuts to your toolkit 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]
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SKU: 87169144133

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Cody Craddock
West Palm Beach, US
★★★★★ 5
Cheap Replacement
These are an easy replacement for anyone who owns a BMW m52/m54 engine that has PCV issues. My car was burning about 1 quart every 1,000 miles. The parts are direct fit and install fairly easy. If there is resistance, lube the hole or o-ring up with some grease and it will slide in easier. Took me about 2 hours start to finish. My mechanic recommended that I remove the intake manifold to do the job. I don’t see how you could do it without removing the intake manifold. These parts probably won’t last as long as true BMW parts but on a 20 year old car I don’t see the benefit in using genuine BMW parts. Cheap stuff will suffice; worst case it doesn’t last quite as long.
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Reviewed in the United States on December 6, 2021
S
Verified Purchase
Slickster
Los Angeles, US
★★★★★ 4
NOT TOO HARD TO INSTALL...
This CCV kit seems adequate. People say that because the hoses supplied with these kits are more brittle than the genuine BMW parts, these are tough to install... But they're really not. The ends on these hoses SWIVEL and you can sort of eyeball which way you need the fitting to be pointing BEFORE you put them on your manifold... They swivel, but they're tight and it takes a little force to turn them. ALSO, a little dab of silicone gel or a spray of silicone out of the can, into the fittings on these makes a world of difference when clicking them on... For the price, I highly recommend the kit.
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Reviewed in the United States on October 14, 2025
P
Verified Purchase
Philip Giuliano
Boise, US
★★★★★ 5
Great value
I recently had to replace the starter on my 2001 325i E46 with about 150k miles. While I had the intake off, I figured it would be a good time to replace the CCV because I was unsure if it had ever been done. My old CCV literally fell apart as I removed it, so I'm glad I replaced it. The new parts were a little tough to put together, but overall came together well enough. A lot can be forgiven for the price. I would recommend assembling the system before installing in your vehicle to get a good sense of how it all goes together and to hopefully loosen up the fittings just a tad before installation. 50skid on youtube has a great DIY for doing this job. I only finished this job yesterday, but my car has been running great. I can't yet confirm, but this may have solved my running lean problem.
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Reviewed in the United States on January 27, 2023
C
Verified Purchase
Craig Randall
Louisville, US
★★★★★ 3
Cheap plastic parts -- good fit
They are what they are: Cheap plastic parts. They fit, but long-term durability will be a challenge. Probably will buy from FCP Euro going forward (and just did for a fuel line replacement).
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Reviewed in the United States on March 12, 2024
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ruben rodriguez
Pawtucket, US
★★★★★ 5
2001 325i
Great quality fits perfect durable. no more leaks works great. Great price.
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Reviewed in the United States on September 29, 2024

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