SKU: 6299097620

Hillman 5/8 in. Diameter x 3-1/2 in. Length Grade 5 Heat-Treated Zinc Steel Hex Head Cap Screws, Coarse Thread, 25-Pack

Sale price$53.09 Regular price$58.99
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Description

Hillman 5/8 in. Diameter x 3-1/2 in. Length Grade 5 Heat-Treated Zinc Steel Hex Head Cap Screws, Coarse Thread, 25-PackHillman Grade 5 Hex Head Cap Screws, 5 8" x 3 1 2", 25 Pack Durable Grade 5 hex head cap screws for heavy duty fastening. Made from heat treated zinc coated steel with coarse threads for strong holds and corrosion resistance. Ideal for use with nuts or tapped holes in structural and machinery applications. Key Features: Grade 5 Strength: Heat treated steel delivers reliable tensile strength for demanding projects Corrosion Resistant Finish: Zinc

Hillman Grade 5 Hex Head Cap Screws, 5/8" x 3-1/2", 25-Pack

Durable Grade 5 hex head cap screws for heavy-duty fastening. Made from heat-treated zinc-coated steel with coarse threads for strong holds and corrosion resistance. Ideal for use with nuts or tapped holes in structural and machinery applications.


Key Features:

  • Grade 5 Strength: Heat-treated steel delivers reliable tensile strength for demanding projects
  • Corrosion-Resistant Finish: Zinc coating helps resist rust for long-term performance
  • Coarse Thread Design: Ensures quick engagement and secure fastening in tapped holes
  • Washer Face Under Head: Provides improved bearing surface and seal
  • Convenient 25-Pack: Boxed quantity for efficient stocking and jobsite use

Specifications Table:

Specification Details
Size 5/8 in diameter x 3-1/2 in length
Material Steel
Finish Heat Treated Zinc
Grade Grade 5
Thread Type Coarse
Head Style Hex head with washer face
Number in Package 25 pack
Packaging Type Boxed
Application Use with a nut or in a tapped hole
Installation Tighten with a wrench or drill
Partial Thread Partially threaded along shank

Frequently Asked Questions (FAQ):

Q: Are these fully or partially threaded?
A: They are partially threaded along the shank.


Q: What tools are recommended for installation?
A: Tighten using a wrench or a drill/driver with the appropriate hex socket.


Q: Do these screws include washers or nuts?
A: No, this pack contains only hex cap screws; purchase compatible nuts and washers separately.


Q: What thread type is used?
A: Coarse thread.


Q: Is the finish suitable for outdoor use?
A: The zinc finish offers general corrosion resistance; for harsh environments, consider additional protective coatings or stainless options.


Industrial polish with dependable strength

These hex cap screws bring a clean, utilitarian elegance to hardware details, marrying strength with a refined zinc sheen. The grade 5 build and washer-faced head offer a tailored, precise look while delivering robust performance. Style them with matte-black brackets or raw steel accents to elevate workshop shelving or custom furniture. A smart essential that balances durability and design for luxe, hardworking spaces.


Choose Hillman Grade 5 hex cap screws for a strong, corrosion-resistant fasten that keeps your projects secure and professional.

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: 6299097620

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Daniel Ivan
Alexandria, US
★★★★★ 5
Great for home office
Color: Grey, Color: Grey
This was a great replacement to the chair I use when I work from home, padding is firm and comfortable so I have no issue sitting on it for hours, the arm rest are foldable so is very convenient when my dogs are in co worker duty. Very easy to put together and it feels very firm and stable.
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Reviewed in the United States on April 15, 2026
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Carol Ann Everitt
Lowell, US
★★★★★ 5
Thick seat cushion
Color: Grey
This double-layer seat cushion is so comfortable! Before, my lower back would ache after just an hour on a hard bench, but now I can work in this chair for most of the day without feeling tired. The PU leather has a great texture, looks high-end, and is incredibly easy to maintain—just wipe it down with a cloth when it gets dirty. It feels smooth and breathable. The 360-degree swivel is very smooth, making it convenient to reach for documents in the office. The casters roll quietly and won’t scratch the floor. For anyone who spends a lot of time working at a desk, the comfort level at this price point is absolutely worth it. I highly recommend it.
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Reviewed in the United States on March 26, 2026
B
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Brittany
Louisville, US
★★★★★ 3
Meh
Color: Black
It's ok. I got it because it looked like it has more cushion and might be more comfortable. Nope. It's the same comfort level as different chairs. My reer still goes numb and gets uncomfortable in this chair. Also, where your arms sit, the chair arms are slightly curved upwards and it causes my chair to be unable to fit under my desk. If they weren't slightly curved, that wouldn't happen. It's just another chair, nothing spectacular.
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Reviewed in the United States on June 13, 2026
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Melissa Alvarado
Carnegie, US
★★★★★ 5
Solid quality and comfortable
Color: Light Grey, Color: Light Grey
Wonderful quality chair, solid and sturdy, it was easy to put together, the directions were very clear and all the pieces fit together perfectly without issue. It is made of breathable material and I love that the arms flip up easily. You can raise it up or down and it has an adjustable headrest. It also has adjustable lumber support. It rolls easily and the color is the only reason I might return, I think I want a different one instead. The chair is comfortable for a petite person but equally comfortable for a tall person. We have both in our family and it is great for both. The armrests are comfortable and there is really nothing negative to say about this chair at all. Considering the quality, it is a great value for the money.
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Reviewed in the United States on April 15, 2026
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Anastasiia
Birmingham, US
★★★★★ 5
Comfortable and Sturdy Office Chair
Color: Black, Color: Black
I’ve been very happy with this chair so far. The quality feels solid, and the materials look durable. The color matches the listing perfectly and fits nicely with my office setup. It’s very comfortable for long periods of sitting, with good support for my back and shoulders. Assembly was straightforward, and all the parts were included. The chair looks modern and professional, and the overall appearance exceeded my expectations. It feels stable and secure, even when reclining or moving around. The wheels roll smoothly, and the chair is easy to adjust for a comfortable fit. Overall, this is a well-made, comfortable, and attractive office chair that offers great value for the price.
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Reviewed in the United States on June 6, 2026

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