SKU: 21659797743

Hillman 3/8 in. Diameter x 1-3/4 in. Length Heat-Treated Zinc Steel Hex Head Cap Screw, 50-Pack

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Description

Hillman 3/8 in. Diameter x 1-3/4 in. Length Heat-Treated Zinc Steel Hex Head Cap Screw, 50-PackHillman Grade 5 Hex Head Cap Screws, 3 8" x 1 3 4", 50 Pack These Hillman hex head cap screws deliver strong, reliable fastening for structural and machinery projects. Made from heat treated zinc plated steel, they offer enhanced strength and wear resistance with a washer faced head for better sealing. Ideal for use with a nut or tapped hole where a durable Grade 5 fastener is required. Key Features: Durable Construction: Heat treated zinc plated

Hillman Grade 5 Hex Head Cap Screws, 3/8" x 1-3/4", 50-Pack

These Hillman hex head cap screws deliver strong, reliable fastening for structural and machinery projects. Made from heat-treated zinc-plated steel, they offer enhanced strength and wear resistance with a washer-faced head for better sealing. Ideal for use with a nut or tapped hole where a durable Grade 5 fastener is required.


Key Features:

  • Durable Construction: Heat-treated zinc-plated steel resists wear and corrosion
  • Reliable Strength: Grade 5, partially threaded for secure holding power
  • Better Seal: Washer face under the head improves load distribution and sealing
  • Versatile Use: Fits nuts or tapped holes; tighten with a wrench or drill
  • Bulk Convenience: 50-pack for jobsite and shop projects

Specifications Table:

Specification Details
Brand Name Hillman
Finish Heat Treated Zinc
Grade Grade 5
Head Diameter 3/8 inch
Length 1-3/4 inch
Material Steel
Number in Package 50 pack
Packaging Type Boxed
Thread Type Coarse
Unit of Measurement Imperial
Type Hex Head Cap Screw

Frequently Asked Questions (FAQ):

Q: Are these fully threaded?
A: They are partially threaded along the shank, providing strong grip with reduced shear risk.


Q: What tools are required for installation?
A: Tighten with a standard wrench or compatible drill/driver and hex socket.


Q: Can these be used outdoors?
A: The zinc finish offers corrosion resistance, but for harsh environments consider galvanized or stainless options.


Q: What thread type do these have?
A: Coarse thread suitable for general-purpose fastening with nuts or tapped holes.


Q: Do they include nuts or washers?
A: No, the package includes only the hex head cap screws.


Industrial Poise with Polished Strength

These hex cap screws bring crisp, architectural detailing to hardware moments that matter. The heat-treated zinc finish offers a sleek, silvery sheen, pairing strength with refinement. Use them to elevate exposed fastener designs on shelving brackets or utility furniture. A quiet essential for a tailored, luxe industrial look.


Secure your projects with dependable Grade 5 strength—add this 50-pack of Hillman hex cap screws 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: 21659797743

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4.0 ★★★★★
Based on 15 reviews
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Product Reviews
K
Verified Purchase
Katarzyna Milczarek
Dallas, US
★★★★★ 4
Fun and Engaging—Just Needs a Bit More Durability
Style: Lobster
I bought the Mity Rain interactive toy for my energetic pups, and it’s been a hit! The movement and squeaky sounds instantly grabbed their attention, and they been chasing it around the house like it’s their new best friend. It’s a great way to keep them mentally stimulated, especially when I’m busy or out of the house. What I Love: - The automatic movements really keep my dogs engaged. - Rechargeable—no need to constantly buy batteries. - Lightweight and easy for small to medium dogs to play with. - Helps reduce boredom and separation anxiety. Why Not 5 Stars: - Needs a gentle tap to reactivate after short breaks, which isn’t ideal if your dog isn’t the pawing type. - Not built for aggressive chewers/play-- i did buy two (lobster and the shark) the lobster apparently was more durable and lasted for a month but the shark was done within a day! Overall, it’s a clever and entertaining toy that’s perfect for indoor play. Just keep an eye on it if your dog tends to chew hard. For the price, it’s a great way to add some excitement to your pup’s day.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 23, 2025
A
Verified Purchase
Amazon Customer
Alexandria, US
★★★★★ 5
A great top & very sturdy!
Style: Fish
Beau was a little shy with the fish at first but now he loves it! I have had a “million laughs”. This is my second fish - present for my “grand dog” at X-mas. They are very study and holds up very well. Really a nice toy!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 20, 2026
A
Verified Purchase
Amy V
Fort Morgan, US
★★★★★ 5
So cute, my dog loves it
Style: Lobster
My dog (15 lb Morkie) loves this toy. It was his gift for Christmas. My little guy is like a child, he gets so excited when he gets new toys. I can’t speak much on durability because my dog isn’t known to destroy toys. But in our case, it’s still in great condition. I love the charging feature. We had a previous toy that required batteries and it was a pain. I keep the charging cord tucked inside the toy pocket so it doesn’t get lost. It’s also motion activated, so if someone walks by it, it will began wiggling. Although I’m starting to wonder if my house is haunted because the toy will turn on by itself.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 13, 2026
F
Verified Purchase
F. D. Cardwell
Grantham, US
★★★★★ 4
Amazingly Tough!
Style: Whale
This is one of our pup’s favorite toys, so much so that we always have a couple around. So far, our very-active, very destructive, deaf mixed-breed puppy has only managed to destroy one. And it was the plushie that failed, not the mechanism. Only reason I subtracted a star is that I’ve gotten a couple where the sensitivity is set WAY too high, as in, maybe it’s cosmic rays, setting it off? But other than that, great toy for a dog with high prey-drive.
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Reviewed in the United States on December 21, 2025
K
Verified Purchase
kent williams
Charlottesville, US
★★★★★ 5
the dog loves it
our dog loves to tug on this toy. now a favorite!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 9, 2025

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