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
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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Verified Purchase
Sarah W. Michels
Birmingham, US
★★★★★ 5
Long lasting
Size: Medium
My dogs love these and they last pretty long. I take them away when they get very small so I think they’re pretty safe.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 27, 2026
C
Verified Purchase
Corinne S
Grantham, US
★★★★★ 3
Meant for bigger dogs than mine
Size: Small
I bought this for my 10 month old pup who’s a VERY aggressive chewer. I’m going to say this is made for a large, older (than mine) dog. She tried to chew a couple times but eventually just walked away from it when I offered it to her and she had only made a few scratches in it. If you have that bigger dog that’s an aggressive chewer, it would be a good value for your money and will keep the engagement high for a long time with its heavy duty quality.
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Reviewed in the United States on April 3, 2026
D
Verified Purchase
DG
Phoenix, US
★★★★★ 5
Finally… a dog chew that doesn’t become a homemade prison shank
Size: Medium
My dog has a real talent: turning every “tough chew” into a sharp, weaponized shard that could star in an episode of Locked Up: Canine Edition. But THIS chew? Absolute game changer. For the first time ever, I can relax—no splinters, no pointy edges, no fear he’s secretly crafting a shiv under the couch. Just happy, safe chewing that actually lasts longer than five minutes. It’s durable, it’s safe, it keeps him busy, and I no longer feel like I’m living with a furry little inmate planning an escape. Highly recommend if your dog chews like he’s got nothing but time.
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Reviewed in the United States on January 29, 2026
A
Verified Purchase
Axmceach
Lake Worth, US
★★★★★ 4
Would buy again
Size: Small
Would have given 5 stars, but my dog was able to chew this down pretty quickly, so not the most durable. I do like that this is made with better material than other dog chews, so I would buy again.
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Reviewed in the United States on February 12, 2026
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charlie badger
Los Angeles, US
★★★★★ 5
Convenient Credit Card
This is an effortless and convenient way to purchase Amazon products. Unfortunately I am on it almost daily so the cash back feature is a plus.
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Reviewed in the United States on June 10, 2026

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