SKU: 72836356240

Hillman 5/16 in. D x 3/4 in. L Heat Treated Steel Hex Head Cap Screw, Coarse Thread, Grade 8, 100-Pack

Sale price$30.51 Regular price$33.90
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Description

Hillman 5/16 in. D x 3/4 in. L Heat Treated Steel Hex Head Cap Screw, Coarse Thread, Grade 8, 100-PackHillman Grade 8 Hex Head Cap Screws, 5 16 in. x 3 4 in. (100 Pack) Heavy duty Grade 8 hex head cap screws made from heat treated steel for high strength fastening. Sized 5 16 in. diameter by 3 4 in. length with coarse threads, ideal for machinery, automotive, and structural applications. Key Features: High Strength Grade 8: Heat treated steel delivers superior tensile strength for demanding applications. Coarse Thread: Provides secure fastening and

Hillman Grade 8 Hex Head Cap Screws, 5/16 in. x 3/4 in. (100-Pack)

Heavy-duty Grade 8 hex head cap screws made from heat-treated steel for high-strength fastening. Sized 5/16 in. diameter by 3/4 in. length with coarse threads, ideal for machinery, automotive, and structural applications.


Key Features:

  • High Strength Grade 8: Heat-treated steel delivers superior tensile strength for demanding applications.
  • Coarse Thread: Provides secure fastening and quicker assembly in tapped holes or with nuts.
  • Hex Head Design: Compatible with wrench or drill drivers for easy tightening and removal.
  • Washer Face Under Head: Enhances load distribution and resists loosening.
  • Bulk 100-Pack: Boxed packaging ensures ample supply for projects and maintenance.

Specifications Table:

Specification Details
Diameter 5/16 in
Length 3/4 in
Material Heat-treated steel
Finish Heat Treated
Grade 8
Thread Type Coarse
Head Type Hex head
Pack Quantity 100
Packaging Type Boxed
Each Weight 2.500 lb (package)

Frequently Asked Questions (FAQ):

Q: Are these screws fully or partially threaded?
A: They are partially threaded Grade 8 hex cap screws.


Q: What tools are recommended for installation?
A: Install with a wrench or a drill driver that fits the hex head.


Q: Do these work with standard nuts and washers?
A: Yes, they are designed for use with compatible nuts and washers matching the 5/16 in. coarse thread.


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


Q: What applications are they suited for?
A: Ideal for automotive, machinery, and structural fastening where high strength is required.


Industrial Strength, Clean Precision

These Grade 8 hex cap screws bring a refined industrial edge to any project, pairing robust performance with crisp geometry. The heat-treated steel and coarse thread offer dependable grip while the hex head adds a graphic, utilitarian statement. Style them with black oxide hardware for a modern contrast in exposed mechanical details. A staple of elevated, hardworking design, they anchor spaces with confidence and clarity.


Upgrade your fasteners to Grade 8 strength—add this 100-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: 72836356240

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yetanothereviewer
Fort Morgan, US
★★★★★ 5
Actual, honest-to-goodness fast charging
Color: Black
After unsuccessfully buying two different so-called "fast" chargers that completely lied about their charging ability, specifically for the Apple watch, I finally bought this one. What a world of difference! I have an Apple watch ultra, which is fantastic on battery life, and I appreciate that I can actually wear it while I sleep. I have to charge it about every day and a half, which means that sometimes I need to top it up while I'm at work. (Alternatively, I could be a slave about charging it every day at home, but part of the reason I switched to the Ultra is to not have to be that obsessive about charging.) Anyway, I needed a good charger at work. I ordered one that claimed to be 5W watch charging, and it blatantly lied. It took over an hour to get about 20% of a charge. I ordered another, similar results. This one is night and day different. My watch will fully charge at the posted speeds Apple boasts about with fast chargers. If it's running a little low during the day, I can pop it on the charger for 20-30 minutes and have enough juice to last through my hour+ swim workout, no problem. The phone charger is fast, too, and if you use a magsafe case, it has a very firm hold. Without a magsafe case, your phone may drop off the charger (mine did), which is frustrating. Since I have another magsafe charger at home, I just bought a new case (they're cheap) and now I'm super happy with this. The contact charger on the back will work to charge your phone (or a second phone) or earbuds, too. Very happy with this purchase. It's a bit pricier than the cheapo other brands, but it actually freaking works and charges quickly. It's worth the money.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 11, 2026
G
Verified Purchase
GhostFace
Cuba, US
★★★★★ 5
Secure Mount With Premium Feel
This phone mount feels incredibly sturdy once installed. No shaking or movement while driving, even on rough roads. The design looks clean and factory installed instead of bulky like a lot of other mounts. It holds the phone securely and keeps it easy to access for navigation.
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Reviewed in the United States on May 15, 2026
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Verified Purchase
L.A.
Omaha, US
★★★★★ 5
Good Solid Mount
Got for my 2019 TRD Off Road. Works great, solid mount. Phone easy in, easy out once you get used to it. Looks and feels well made.
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Reviewed in the United States on May 19, 2026
A
Verified Purchase
Amazon Customer
Massapequa, US
★★★★★ 5
Solid Product
I was a bit skeptical based on the price ($85 total after taxes) but you can tell that for the price, this thing is sturdy and high quality. Holds solid onto the vent and keeps my iPhone in place. Easy to adjust and move to your liking, also easy to turn 90* and have your phone sideways. Only drawback is that is obstructs the view of the clock on my 4Runner and slightly obstructs my windshield, but I am sure I will get used to it.
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Reviewed in the United States on May 14, 2026
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Verified Purchase
Annika Chestnut
Dallas, US
★★★★★ 5
Great phone holder
I use this phone mount in my Subaru Impreza, and it works perfectly with my vents. It holds my phone super securely—no wobbling or slipping—so it’s great for navigation or hands-free use. Really solid and reliable for the price.
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Reviewed in the United States on November 5, 2025

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