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]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 87169144133

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Mary Dora
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★★★★★ 5
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Color: Black
Love this purchase.
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Reviewed in the United States on April 15, 2026
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Laurie
Lowell, US
★★★★★ 5
Sturdy, roomy, preserves my shoulders!
Color: Pink
Cute and perfect to help me with my new "minimalist" commitment. After multiple shoulder surgeries I needed to get the purse straps OFF my shoulders. This wristlet hangs on my wrist without slipping off and has enough room for my wallet, chapstick, hand sanitizer, air pods, a few pens, a protein bar, and one or two other random items. Looks small, holds a LOT! Withstands my everyday life of banging it around, spilling coffee on it, and generally putting it through a wringer. It still looks great!
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Reviewed in the United States on February 21, 2026
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Angela
San Leandro, US
★★★★★ 5
Just what you need for an event
Color: Silver
Compact but lots of storage.
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Reviewed in the United States on February 21, 2026
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Amazon Customer
Grantham, US
★★★★★ 3
Looks great but the black purse Smells like fish
Color: Black
The black purse looks nice but smells like fish. I even tried to wash it out a couple times and it didn’t work.
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Reviewed in the United States on May 16, 2026
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George Engelman
Lowell, US
★★★★★ 4
A great, small wristlet purse.
Color: Black
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Reviewed in the United States on November 7, 2025

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