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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ashlynnk
Belleville, US
★★★★★ 4
Cute, comfortable waterproof boots (a little snug to put on)
Size: 7, Color: Velvet Tan/Gum 2
These are really cute Chelsea-style boots and feel very comfortable once they’re on. The waterproof material is great for wet weather and the sole feels sturdy with good traction. They look stylish enough to wear casually but still feel practical for rainy days. The only downside is they can be a little difficult to put on at first because the opening is somewhat snug, but once they’re on they fit well and feel supportive. Overall they’re a great waterproof boot and I’ve enjoyed wearing them.
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Reviewed in the United States on March 17, 2026
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Abby B
Draper, US
★★★★★ 5
Surprisingly great for my wide feet and high instep!
Size: 10.5, Color: Velvet Tan/Gum 2
So thrilled I took a chance on these. Finding boots is impossible for me. I have wide feet, a super high instep, a bunion on one foot, and I wear a hard to find size (10.5). I ordered the 10.5 and 11 in these expecting I might need to size up for width (if I could even get them on). It was a struggle getting the 10.5s on the first time, and once I did they were somewhat uncomfortable on the top of my left foot. But I read that they would relax so decided to give it a go because I need waterproof boots for an upcoming trip and the 11s felt too long. After two days of light wear, they are already breaking in and I have no more discomfort. Getting them on is already easier and they are plenty wide enough and very comfortable to walk in. These are true to size. Super happy and worth a day of mild discomfort to break them in!
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Reviewed in the United States on March 7, 2026
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EE
Waukegan, US
★★★★★ 5
Comfortable, sturdy, waterproof
Size: 9.5, Color: Black/Black
Loce, love, love these boots. Have walked ten miles with no foot pain around NYC. They go with everything and and are so comfortable. As they are waterproof/resistant, they get a little warm in high temps, but perfect three-season boots.
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Reviewed in the United States on May 17, 2026
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Kate
Lexington, US
★★★★★ 5
Super cute, comfortable, practical, love that they are slip on
Size: 10.5, Color: Tobacco/Black
I have worn these 2-3 times already. The first day was a school/work day so I was on my feet 9 hours and the only issue I had was with the side of the boot rubbing against my ankle. I just make sure I wear socks high enough to cover my ankles or jeans that go into the boots now for long wear days. Absolutely love them! They keep my feet dry in this snow( we live in Michigan). I had been looking for a pair like this for awhile now and was getting super frustrated that I couldn't find my size in any that I liked. I saw that they had these available in a 10.5 and I wear 11. I looked at the Sorel website reviews (since the amazon ones weren't super helpful on sizing) and they said that the boots ran big so I took a chance on the 10.5 fitting me. They fit perfect. I have long narrow feet but I could see where they would be tight or uncomfortable on someone with wider feet. I've been trying to find a pair for my mom now since she has boot envy.
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Reviewed in the United States on January 27, 2026
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Tami
Louisville, US
★★★★★ 5
Excellent quality!!!
Size: 10, Color: Ocean Breeze
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Reviewed in the United States on December 4, 2025

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