SKU: 35569724716

Hillman 5/16 in. Diameter x 3 in. Length Grade 8 Heat-Treated Steel Hex Head Cap Screws, Coarse Thread, 100-Pack

Sale price$71.99 Regular price$79.99
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Ships within 48 hours · Estimated delivery Jul 12 - Jul 17

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Description

Hillman 5/16 in. Diameter x 3 in. Length Grade 8 Heat-Treated Steel Hex Head Cap Screws, Coarse Thread, 100-PackHillman Grade 8 Hex Cap Screws, 5 16" x 3", 100 Pack Heavy duty Grade 8 hex head cap screws built from heat treated steel for demanding fastening applications. Coarse threaded with a washer face for secure seating and long lasting performance. Ideal for machinery, automotive, and construction projects. Key Features: Heavy Duty Grade 8: Engineered for high strength applications and superior load bearing performance Heat Treated Steel: Enhanced

Hillman Grade 8 Hex Cap Screws, 5/16" x 3", 100-Pack

Heavy-duty Grade 8 hex head cap screws built from heat-treated steel for demanding fastening applications. Coarse-threaded with a washer face for secure seating and long-lasting performance. Ideal for machinery, automotive, and construction projects.


Key Features:

  • Heavy-Duty Grade 8: Engineered for high-strength applications and superior load-bearing performance
  • Heat-Treated Steel: Enhanced durability and wear resistance for long service life
  • Coarse Thread: Reliable grip and faster assembly in tapped holes or with nuts
  • Washer Face Under Head: Better seal and seating against surfaces to reduce loosening
  • Bulk Value Pack: 100 screws sized 5/16 in. diameter x 3 in. length

Specifications Table:

Specification Details
Brand Hillman
Product Type Hex Head Cap Screws
Diameter 5/16 inch
Length 3 inch
Material Steel
Finish Heat Treated (yellow dichromate referenced)
Grade 8
Thread Type Coarse
Threading Partially threaded along shank
Head Style Hex head with washer face under head
Number in Package 100 pack
Packaging Type Boxed
Tightening Method Wrench or drill
Package Height 3.2 in
Package Width 4.3 in
Package Length 5.3 in
Package Weight 7.6 lbs

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 with a wrench or a drill fitted with the appropriate hex socket.


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


Q: What material and finish do they have?
A: Made of heat-treated steel; yellow dichromate style finish referenced for strength and wear resistance.


Q: Can these be used in automotive or machinery applications?
A: Yes, as Grade 8 heat-treated steel hex cap screws, they are suitable for high-stress applications in automotive and machinery.


Industrial Strength with Clean, Purposeful Lines

These hex cap screws bring a refined, utilitarian elegance to any build—sleek heads and crisp geometry that read as confident and modern. The heat-treated Grade 8 steel delivers a commanding presence and resilience. Style them with blackened hardware and raw oak shelving to underscore a crafted, industrial vibe. Essential, functional, and impeccably strong—this is hardware that elevates the everyday.


Secure your projects with trusted Grade 8 strength—add this Hillman 100-pack to your toolkit 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: 35569724716

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4.8 ★★★★★
Based on 439 reviews
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Nana
Waukegan, US
★★★★★ 1
My Monster Dogs destroyed these balls
Color: Glow in the dark II, Size: Large
I was so excited to get two of these balls for my doodle puppies to have to play with . THEY DESTROYED THEM IN ALL OF TEN MINUTES. I don't believe that there was anything wrong with the balls. They were beautiful, high quality balls. Just not durable enough for my doodles.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 25, 2026
D
Verified Purchase
Deborah Goellner
Charlottesville, US
★★★★★ 3
Doesn't glow in the dark but my dog still enjoyed
Color: Glow in the dark Ⅳ, Size: Medium
Great
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 4, 2026
K
Verified Purchase
KC
Louisville, US
★★★★★ 5
Sturdy, well made, puppy & senior dog approved
Color: Glow in the dark I, Size: Medium
Pet approved !!!! Our puppy immediately grabbed it by the straps and took off!! It is well made and has handled some serious chewing in the last 24 hours. We love the glow in the dark because puppy playtime does not stop when it gets dark out!! It came with a pump and was very easy to assemble and inflate. This toy would be great for a pet owner that struggles with grasp & grip strength, the straps are absolutely genius.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 10, 2026
K
Verified Purchase
KennyR
Cuba, US
★★★★★ 5
Fun, Durable Ball, But Straps Could Be Tougher
Color: Glow in the dark I, Size: Large
I bought the QDAN Glow in the Dark Dog Toys Soccer Ball for my German Shepherd, who absolutely loves it. The glow-in-the-dark feature is great for evening play, adding an extra layer of fun to our outdoor interactions. The ball itself has proven to be remarkably durable, standing up well to the rough play that comes with a large, active dog. However, the straps did not fare as well. My GSD managed to bite through most of them relatively quickly. While this hasn’t stopped us from enjoying the ball, it does mean that some of the interactive potential of the toy is lost. The ball continues to be a hit on its own, thanks to its resilience and the glow feature that keeps my dog engaged. If the straps were as durable as the ball itself, this would be a perfect outdoor toy for energetic dogs. As it stands, it’s still a good purchase for anyone looking for a sturdy, engaging toy for their pet, especially if nighttime play is a routine.
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Reviewed in the United States on September 25, 2024
B
Verified Purchase
Beach Lover (Sue)
Lowell, US
★★★★★ 5
Pup loves this!
Size: 6 Inch, Color: Red
This soccer ball is so cute. My dog loves to play with these. The straps are durable, easy to pump up (they come with a pump), good value for the money since they tend to last awhile, at least for us. The straps are durable but could be an issue if your dog is an aggressive chewer. They stay pumped up for quite awhile and just need to be topped off once in awhile to keep the bounce there. We keep them outside even in the winter and they do just fine. HIghly recommend as a good play toy.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 16, 2025

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