Hillman 3/8 in. Diameter x 3 in. Length Heat-Treated Steel Hex Head Cap Screw, Grade 8, 50-Pack
SKU: 45408115550

Hillman 3/8 in. Diameter x 3 in. Length Heat-Treated Steel Hex Head Cap Screw, Grade 8, 50-Pack

Sale price$46.79 Regular price$51.99
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Description

Hillman 3/8 in. Diameter x 3 in. Length Heat-Treated Steel Hex Head Cap Screw, Grade 8, 50-PackHillman Grade 8 Hex Head Cap Screw 3 8 in. x 3 in. (50 Pack) Heavy duty hex head cap screws from Hillman deliver Grade 8 strength for demanding fastening applications. Made of heat treated steel with a protective yellow dichromate finish, these partially threaded bolts are ideal for use with a nut or tapped hole. Key Features: Grade 8 Strength: Heat treated steel provides high tensile performance for heavy duty assemblies Washer Face Head: Built in

Hillman Grade 8 Hex Head Cap Screw 3/8 in. x 3 in. (50-Pack)

Heavy-duty hex head cap screws from Hillman deliver Grade 8 strength for demanding fastening applications. Made of heat-treated steel with a protective yellow dichromate finish, these partially threaded bolts are ideal for use with a nut or tapped hole.


Key Features:

  • Grade 8 Strength: Heat-treated steel provides high tensile performance for heavy-duty assemblies
  • Washer Face Head: Built-in washer face under the hex head for improved load distribution and sealing
  • Partially Threaded Shank: Enhances shear strength and alignment in structural connections
  • Corrosion-Resistant Finish: Yellow dichromate coating adds wear and rust resistance
  • Bulk Pack Convenience: 50-pack for jobsite efficiency and consistent hardware matching

Specifications Table:

Specification Details
Brand Hillman
Diameter 3/8 inch
Length 3 inch
Material Steel
Grade Grade 8
Finish Heat-treated yellow dichromate
Thread Type Coarse (USS)
Head Type Hex head with washer face
Threading Partially threaded shank
Packaging Quantity 50 pack
Packaging Type Boxed
Use For use with a nut or tapped hole; tighten with wrench or drill

Frequently Asked Questions (FAQ):

Q: What size are these screws?
A: Each hex head cap screw is 3/8 inch diameter and 3 inches long.


Q: Are they fully threaded?
A: No. They are partially threaded along the shank for improved strength.


Q: What material and grade are they?
A: They are Grade 8 heat-treated steel for high strength applications.


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


Q: How are they typically installed?
A: Tighten with a wrench or a drill driver into a nut or tapped hole.


Industrial Strength, Refined Utility

A bolt with presence—its burnished yellow dichromate sheen brings a subtle, utilitarian polish to exposed hardware moments. The crisp hex head and clean, partial thread feel engineered and intentional, perfect for cabinetry details or custom metalwork where hardware becomes part of the composition. Pair with matte black or oiled bronze elements to let the warm metallic tone sing. For projects that demand both beauty and brawn, this is a quiet essential.


Equip your project with Grade 8 confidence—add this 50-pack of Hillman hex head cap screws to your cart now.

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: 45408115550

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Verified Purchase
Zachary Cohen
Los Angeles, US
★★★★★ 5
High-quality, high-value
Color: Black, Size: Fits Desk Leg: 80mm(D) x 50mm(W)
I was looking for something similar for my Uplift Desk for a long time, and gave up until I built a new computer and had a reason to resume the search. Seriously, this desk mount is top-tier; I'm coming out of a long drought to review this product. The build quality, strength and stability is impressive, and assembly is easy. I'm confident that the stand could hold my body weight, let alone a computer. The appearance of the finish is high-quality, and color matches the coated steel frame of the Uplift desk flawlessly. In terms of possible areas of improvement, I'd love to see a tighter vertical fitment of the top bracket's sliding arm, and I'd love if there were more rubber anti-slip pads and spacers of different shapes and sizes included. I ended up double-stacking the anti-slip pads, using superglue to adhere them to each other, to give my PC more breathing room on its underside. I'd also love to have the option to select different sizes of base plates.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 7, 2026
L
Verified Purchase
Louis
Belleville, US
★★★★★ 5
Great Quality Product
Color: Black, Size: Fits Desk Leg: 80mm(D) x 50mm(W)
Great quality and product was easy to assemble. Works perfectly for my sit/stand desk and precisely what I needed to get my desktop off the ground and to have it feel out of the way.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 15, 2026
D
Verified Purchase
Destiney Robertson
Alexandria, US
★★★★★ 5
Sturdy mount
Color: Black, Size: Fits Desk Leg: 80mm(D) x 50mm(W)
Great product, very sturdy. no doubt I trust this mount/adapter to hold my 50lb PC. Installation instructions were a little lacking in explaining what to do with the small black rubber pieces. Also, I feel it is very important to ensure the bracket is level before mounting the product - especially if you have a HDD inside your computer. Nothing to knock a star off for.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 4, 2026
R
Verified Purchase
R. Doug
Natrona Heights, US
★★★★★ 5
Fantastic when paired with FLEXISPOT desk!
Color: White, Size: Fits Desk Leg: 80mm(D) x 50mm(W), Color: White, Size: Fits Desk Leg: 80mm(D) x 50mm(W)
I've got this to get my gaming PC off the floor, but keep it off the desk. It delivers. It fit my FLEXISPOT EC1 Electric White Standing Desk perfectly. This PC is 39lbs and there's no sign of it slipping or sagging under the weight as the base is sturdy. The top bracket isn't perfect for this uniquely size case. It installed in <5 minutes start to finish. I used an electric hammer-drill and it cinched up the proviced T-25 screws with ease. For me there's very little that I would change except for the top support bracket arm being slightly different sized.
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Reviewed in the United States on December 21, 2025
K
Verified Purchase
Kindle Customer
Bozeman, US
★★★★★ 5
It's good
Color: White, Size: Fits Desk Leg: 80mm(D) x 50mm(W)
Pretty good ngl, working well
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 20, 2026

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