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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Cody Craddock
Louisville, US
★★★★★ 5
Cheap Replacement
These are an easy replacement for anyone who owns a BMW m52/m54 engine that has PCV issues. My car was burning about 1 quart every 1,000 miles. The parts are direct fit and install fairly easy. If there is resistance, lube the hole or o-ring up with some grease and it will slide in easier. Took me about 2 hours start to finish. My mechanic recommended that I remove the intake manifold to do the job. I don’t see how you could do it without removing the intake manifold. These parts probably won’t last as long as true BMW parts but on a 20 year old car I don’t see the benefit in using genuine BMW parts. Cheap stuff will suffice; worst case it doesn’t last quite as long.
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Reviewed in the United States on December 6, 2021
S
Verified Purchase
Slickster
Lexington, US
★★★★★ 4
NOT TOO HARD TO INSTALL...
This CCV kit seems adequate. People say that because the hoses supplied with these kits are more brittle than the genuine BMW parts, these are tough to install... But they're really not. The ends on these hoses SWIVEL and you can sort of eyeball which way you need the fitting to be pointing BEFORE you put them on your manifold... They swivel, but they're tight and it takes a little force to turn them. ALSO, a little dab of silicone gel or a spray of silicone out of the can, into the fittings on these makes a world of difference when clicking them on... For the price, I highly recommend the kit.
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Reviewed in the United States on October 14, 2025
P
Verified Purchase
Philip Giuliano
Battle Creek, US
★★★★★ 5
Great value
I recently had to replace the starter on my 2001 325i E46 with about 150k miles. While I had the intake off, I figured it would be a good time to replace the CCV because I was unsure if it had ever been done. My old CCV literally fell apart as I removed it, so I'm glad I replaced it. The new parts were a little tough to put together, but overall came together well enough. A lot can be forgiven for the price. I would recommend assembling the system before installing in your vehicle to get a good sense of how it all goes together and to hopefully loosen up the fittings just a tad before installation. 50skid on youtube has a great DIY for doing this job. I only finished this job yesterday, but my car has been running great. I can't yet confirm, but this may have solved my running lean problem.
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Reviewed in the United States on January 27, 2023
C
Verified Purchase
Craig Randall
Port Orchard, US
★★★★★ 3
Cheap plastic parts -- good fit
They are what they are: Cheap plastic parts. They fit, but long-term durability will be a challenge. Probably will buy from FCP Euro going forward (and just did for a fuel line replacement).
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Reviewed in the United States on March 12, 2024
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ruben rodriguez
Massapequa, US
★★★★★ 5
2001 325i
Great quality fits perfect durable. no more leaks works great. Great price.
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Reviewed in the United States on September 29, 2024

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