Hillman 5/16 in. Zinc-Plated Steel SAE Acorn Nut, 100-Pack
SKU: 48586521729

Hillman 5/16 in. Zinc-Plated Steel SAE Acorn Nut, 100-Pack

Sale price$25.19 Regular price$27.99
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Description

Hillman 5/16 in. Zinc-Plated Steel SAE Acorn Nut, 100-Pack5 16 in. Zinc Plated SAE Acorn Nuts (100 Pack) These Hillman SAE acorn (cap) nuts feature a zinc plated steel construction for durability and a clean finish. The domed cap protects exposed bolt threads and offers a neat, finished look in mechanical, automotive, and DIY applications. Key Features: Protective Dome Cap: Shields exposed bolt threads and prevents snagging or injury Durable Zinc Plated Steel: Corrosion resistant finish for indoor and

5/16 in. Zinc-Plated SAE Acorn Nuts (100-Pack)

These Hillman SAE acorn (cap) nuts feature a zinc-plated steel construction for durability and a clean finish. The domed cap protects exposed bolt threads and offers a neat, finished look in mechanical, automotive, and DIY applications.


Key Features:

  • Protective Dome Cap: Shields exposed bolt threads and prevents snagging or injury
  • Durable Zinc-Plated Steel: Corrosion-resistant finish for indoor and general-purpose use
  • SAE Coarse Thread: 5/16-18 thread for common fastening needs
  • Clean Finished Appearance: Hex design with cap creates a polished look on visible installations
  • Bulk Value Pack: 100 pieces for shop stock and project efficiency

Specifications Table:

Specification Details
Fastener Type SAE Acorn (Cap) Nut
Thread Size 5/16-18 (coarse)
Material Steel
Finish Zinc-plated
Pack Quantity 100 pieces
Drive/Head Hex with domed cap

Frequently Asked Questions (FAQ):

Q: What thread size are these acorn nuts?
A: They are 5/16-18 SAE coarse thread.


Q: What material and finish are used?
A: They are steel with a zinc-plated finish for corrosion resistance.


Q: How many come in the package?
A: 100 acorn nuts per pack.


Q: Where are acorn nuts typically used?
A: They’re used where exposed bolt ends need protection and a finished look—furniture, automotive, machinery, and general DIY.


Q: Can these be used outdoors?
A: Zinc plating offers basic corrosion resistance; for harsh outdoor or marine environments, consider stainless steel.


A Polished Finish in One Simple Turn

The domed silhouette brings a tailored, bespoke finish to hardware moments that often go unnoticed. I love the subtle gleam of zinc-plated steel—it tidies up exposed threads with a refined gesture. Style them on visible furniture joints or open-shelf brackets for a crisp, intentional detail. An elegant essential that quietly elevates everyday construction.


Complete your project with a clean, safe finish—add this 100-pack of 5/16 in. Hillman acorn 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: 48586521729

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Debbie Segrest
Massapequa, US
★★★★★ 5
Highly recommend
Color: Black
Very sturdy, the cushions make it super comfortable. The size and ease of movement are perfect. Assembly was super easy. A very quiet chair. Wonderful all around value.
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Reviewed in the United States on February 28, 2026
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avid reader
Whiting, US
★★★★★ 5
Great price.
Color: Black
Easily put together. Very comfortable and cushioned. Rolls easily on the glass mat at my desk. Highly recommend for the price.
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Reviewed in the United States on April 13, 2026
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Al
Los Angeles, US
★★★★★ 3
Good Basic Chair with a Few Drawbacks
Color: Black
I bought this Amazon Basics office task chair for my boyfriend who works from home. Overall, it’s a decent, simple chair that gets the job done for everyday use, especially if you just need something functional and affordable. However, there are a couple of downsides. The recline doesn’t go back as much as he would like, so it’s not ideal if you prefer to lean back and relax between tasks. Also, after about a month of use, the wheels don’t glide as smoothly as they did at first, which can be a bit frustrating when rolling across the floor. Overall, it’s a solid basic chair for light use, but if you want something with a deeper recline or super smooth mobility long-term, you might want to consider other options. Still a reasonable purchase depending on your needs.
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Reviewed in the United States on February 12, 2026
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Dime-Sized Dame
Grantham, US
★★★★★ 5
Had for just over 9 years now and still pretty solid
Color: Black
I ordered this chair back in December 2015 for our front office, and it's been moved to our back shop where we fabricate. We're not a gentle work space by any stretch of the imagination; we build stuff and it's messy, lots of tools etc. This chair has held up surprisingly well! The faux leather is delaminating almost entirely on the seat but honestly, I'd expect that for faux leather on something that is used daily. The seat pad, in my opinion, has gotten de-poofed. So it's not plush anymore but still usable. I've asked the guy that's using it if they want an upgrade/update and they said they like it and don't want to change it out just yet. That's saying something! The size is nice and wide. We've had a range of differently sized folks sit in the chair over the years and the seat was always comfortable (less now without so much seat poof), I was able to sit cross-legged and the whole chair felt sturdy then as it does now. All of the standards functions you'd want an office chair to do, it can still do: it goes up and down smoothly, it rolls just fine, it's still pivot-reclines comfortably and doesn't feel like it's going to topple. I like it!
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Reviewed in the United States on January 15, 2026
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Amazon Customer
Battle Creek, US
★★★★★ 4
Good enough
Color: Black
Comfortable chair. Easy to put together. Allen nuts aren't cut perfectly so sometimes hard to get the wrench in there. My biggest complaint, and I didn't even realize this until I sat down in it, the arm rests are not adjustable and they are a little short for my liking.
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Reviewed in the United States on March 17, 2026

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