Hillman 7/16 in. Diameter x 3-1/2 in. Length Heat-Treated Zinc Steel Hex Head Cap Screw, 25-Pack
SKU: 78777566802

Hillman 7/16 in. Diameter x 3-1/2 in. Length Heat-Treated Zinc Steel Hex Head Cap Screw, 25-Pack

Sale price$28.79 Regular price$31.99
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Description

Hillman 7/16 in. Diameter x 3-1/2 in. Length Heat-Treated Zinc Steel Hex Head Cap Screw, 25-PackHillman Grade 5 Hex Head Cap Screws, 7 16" x 3 1 2", 25 Pack Durable grade 5 hex head cap screws for heavy duty fastening in wood or metal. Made of steel with a heat treated zinc finish for added strength and wear resistance, partially threaded for secure clamping. Ideal for applications requiring a hex bolt tightened with a wrench or drill. Key Features: Grade 5 Strength: Heat treated steel provides reliable tensile strength for demanding projects

Hillman Grade 5 Hex Head Cap Screws, 7/16" x 3-1/2", 25-Pack

Durable grade 5 hex head cap screws for heavy-duty fastening in wood or metal. Made of steel with a heat-treated zinc finish for added strength and wear resistance, partially threaded for secure clamping. Ideal for applications requiring a hex bolt tightened with a wrench or drill.


Key Features:

  • Grade 5 Strength: Heat-treated steel provides reliable tensile strength for demanding projects
  • Corrosion-Resistant Finish: Zinc plating helps resist rust and wear in indoor and outdoor environments
  • Washer Face Head: Built-in bearing surface under the hex head for improved sealing and load distribution
  • Partially Threaded Shank: Offers strong clamping force and alignment where a hex bolt is required
  • Convenient Bulk Pack: 25 boxed screws sized 7/16 in. diameter x 3-1/2 in. length

Specifications Table:

Specification Details
Diameter 7/16 inch
Length 3-1/2 inch
Material Steel
Finish Heat Treated Zinc
Grade 5
Head Style Hex head with washer face
Thread Type Coarse (USS)
Threading Partially threaded
Number in Package 25 pack
Packaging Type Boxed
Tightening Method Wrench or drill
Category Hex Bolts
Package Height 3.5 in
Package Width 4.3 in
Package Length 4.3 in
Package Weight 4.3 lbs

Frequently Asked Questions (FAQ):

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


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


Q: What is the material and finish?
A: Steel with a heat-treated zinc finish for enhanced strength and wear resistance.


Q: What thread type do these use?
A: Coarse thread (USS).


Q: Can these be used where a hex bolt is specified?
A: Yes—hex cap screws serve the same purpose and include a washer face under the head.


Industrial polish with purposeful precision

This hex cap screw brings a clean, engineered elegance to exposed hardware moments. The zinc finish offers a subtle shimmer that pairs beautifully with raw woods and painted metals. Use them to anchor custom shelving brackets or a statement door strap for a refined, utilitarian edge. It’s a small detail that elevates everyday fixtures to a more sophisticated, enduring standard.


Secure your project with grade 5 strength—add this 25-pack to your cart and fasten with confidence.

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: 78777566802

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Brandy B
Lake Worth, US
★★★★★ 5
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This chew toy has quickly become our puppy’s absolute favorite. She’s just starting to teethe, and keeping her busy and comfortable has definitely been a challenge, but this ring has been a lifesaver. She was interested in it right away and keeps coming back to it on her own, which is a huge win. The chicken flavor seems to really hold her attention, and it gives her something appropriate to chew instead of everything else. It’s the perfect size for a very young puppy and easy for her to hold and gnaw on without getting frustrated. It keeps her occupied, helps soothe her gums, and gives us a much-needed break during those teething moments. If you have a puppy just starting the teething phase and need something safe, durable, and engaging, this is an excellent choice and one I’d happily buy again.
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Reviewed in the United States on February 6, 2026
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Ginger Murdough
Lexington, US
★★★★★ 5
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My dog loves these. She chews them into pieces which helps keep her teeth clean. It is a mess to clean up. She chews and spits out the pieces. She is 6 years old so not a puppy.
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Reviewed in the United States on May 29, 2026
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Michelle Kim
Dallas, US
★★★★★ 4
Everything a Teething Puppy Could Need — Well-Thought-Out Kit
Size: X-Small, Color: Teething Bone
The Nylabone New Puppy Starter Kit is a solid all-in-one solution for the first few months of puppy ownership. It comes with multiple chew toys and bones designed specifically for teething puppies, and my little one took to them right away. The variety keeps him engaged, and I appreciate that each item is designed to be gentle on developing teeth while still satisfying his urge to chew. What differentiates this kit from other puppy chew sets on Amazon is the thoughtful selection of textures and shapes. It’s clear these toys are designed to stimulate gums, promote healthy chewing habits, and even support dental care. I also like that everything is non-toxic and durable enough to survive a few enthusiastic chews. The only reason I didn’t give 5 stars is that the kit might be a bit small for larger breeds, or for puppies that are particularly aggressive chewers. But for standard small to medium pups, it’s a fantastic starter kit that keeps both puppy and owner happy. ✅ Bottom line: A reliable, well-designed starter kit for teething puppies which is thoughtful, durable, and engaging. Makes a great gift for new puppy owners or a practical addition to your own puppy’s toy collection.
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Reviewed in the United States on September 26, 2025
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Valarie Amundsen
Grantham, US
★★★★★ 5
Chew
Size: X-Small, Color: Ring Bone
My dog loves this little chewy bone and it’s good for her teeth. That was very cheap on a sale. It’s worth giving it a try highly recommend it.
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Reviewed in the United States on June 11, 2026
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princeton von d
Grantham, US
★★★★★ 3
Chicken Flavor Good, But 🔄 Rotation-Resistant✖; Best for Simpler Chewers
Size: X-Small, Color: Ring Bone, Size: X-Small, Color: Ring Bone
🐾 Hi, I’m PVD; plush sophisticate, chew critic, and active curator of rotational toy relevance. This ring bone and I never fully bonded. I sampled it maybe five times in my entire puppyhood before quietly returning it to the bin (with a single judgmental glance). Still, it does have value for the right pup. ⭐ Why I originally wanted to love it: ✔️ XS size works well for very young puppies ✔️ Chicken flavor lasts impressively long ✔️ Freezing offers temporary gum relief ✔️ Durable and safe; no odd odors or shredding 🌀 Why it’s now a respectful 3-star chew in my rotation: ✘ Never became a go-to toy (5 uses max in my life) ✘ Ring shape felt awkward, not natural or chic; hard to grip and maneuver ✘ Texture too tame vs. nubs or detailed chew surfaces ✘ When I was smaller, I much preferred the Nylabone Baby Blue Bone Chew Toy with nubs (my personal classic), and have since matured into nightly Nylabone “Nubz” edible bones This Ring Bone is Best For: • Very young puppies with minimal chew preferences • Dogs who like simple textures and circular shapes • Those just starting enrichment chew play • Freezer treat rotations (briefly) 🚫 Not ideal for: picky pups, advanced chewers, or dogs who analyze toy ergonomics (like myself). 📝 Final Re-Barks: A strong, well-made chew, but lacked the intrigue to make my permanent rotation. Works for basic chew enjoyment; not for pups with elevated taste or toy ambition. — PVD (Chew Strategist, Textural Analyst & Aspire-to-Vine Reviewer 🐶💼)
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Reviewed in the United States on September 17, 2025

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