SKU: 37040353714

Hillman 3/8 in. Diameter x 4 in. Length Grade 8 Heat-Treated Steel Hex Head Cap Screw, 50-Pack

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Description

Hillman 3/8 in. Diameter x 4 in. Length Grade 8 Heat-Treated Steel Hex Head Cap Screw, 50-PackHillman Grade 8 Hex Head Cap Screws, 3 8" x 4", 50 Pack Heavy duty hex head cap screws made from heat treated Grade 8 steel for superior strength and wear resistance. Partially threaded with a washer face under the head for a secure seal, ideal for fastening into nuts or tapped holes. Coarse thread design ensures reliable assembly in demanding applications. Key Features: Grade 8 Strength: Heat treated steel delivers high tensile performance for heavy

Hillman Grade 8 Hex Head Cap Screws, 3/8" x 4", 50-Pack

Heavy-duty hex head cap screws made from heat-treated Grade 8 steel for superior strength and wear resistance. Partially threaded with a washer face under the head for a secure seal, ideal for fastening into nuts or tapped holes. Coarse thread design ensures reliable assembly in demanding applications.


Key Features:

  • Grade 8 Strength: Heat-treated steel delivers high tensile performance for heavy-duty projects
  • Washer Face Seal: Built-in washer face under the head helps create a better seal
  • Partially Threaded Shank: Provides alignment strength with threaded grip where it counts
  • Corrosion-Resistant Finish: Yellow dichromate coating enhances durability and wear resistance
  • Multipack Convenience: Boxed 50-pack for jobsite or shop efficiency

Specifications Table:

Specification Details
Diameter 3/8 inch
Length 4 inch
Material Steel
Finish Heat-treated yellow dichromate
Grade Grade 8
Head Type Hex head with washer face
Thread Type Coarse
Threading Partially threaded
Number in Package 50
Packaging Type Boxed
Use For use with a nut or in a tapped hole; tighten with wrench or drill

Frequently Asked Questions (FAQ):

Q: Are these fully threaded?
A: No. They are partially threaded along the shank.


Q: What tools are needed for installation?
A: Tighten with a wrench or a compatible drill/driver and hex socket.


Q: What thread type do these bolts use?
A: Coarse thread.


Q: Can these be used with nuts or tapped holes?
A: Yes. They are designed for use with a nut or in a properly tapped hole.


Q: What is the diameter and length?
A: 3/8 inch diameter and 4 inch length.


Industrial Polish with Uncompromising Strength

These Grade 8 cap screws bring a refined industrial character to custom builds, pairing a clean hex silhouette with a luminous yellow dichromate finish. The partially threaded shank offers a tailored, architectural look while maximizing performance. Style them with exposed hardware on thick timber or steel frames for a confident, modern edge. A must-have detail that elevates craftsmanship and durability in any luxe workspace or loft setting.


Choose Hillman Grade 8 cap screws for reliable, high-strength fastening—perfect for your next heavy-duty build.

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: 37040353714

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M
Verified Purchase
Meagan patterson
Natrona Heights, US
★★★★★ 3
Not for puppies that like to chew
Style: Monkey
Tore really quickly
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 12, 2025
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CMad
Belleville, US
★★★★★ 1
DO NOT BUY THIS TOY FOR A DOG
Style: Hedgehog
I purchased this toy for my Mothers 11 pound female 10 years old rescue dog. Under 1 hour the dog chewed off all the feet, the nose, and then started to pull off the fur. We took it away. Dangerous!!! The description list for Aggressive Chewers it is not!!!
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Reviewed in the United States on December 17, 2024
E
Elle
Dallas, US
★★★★★ 5
Very High-Quality Hedgehog Dog Toy That’s Bigger Than Expected
Style: Hedgehog
I am SO happy with this -- it's a nice surprise to get a dog toy that is this nice quality-wise! This plush toy is well-made and much larger than I thought it would be. The stitching is solid, and the material holds up to rough chewing. My dog’s been playing with it daily and it still looks good. The squeaker’s not too loud, and the soft texture makes it perfect for tugging or tossing.
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Reviewed in the United States on May 1, 2025
V
Vineyard Cow
New York, US
★★★★★ 4
Very Soft Toy
Style: Hedgehog
This stuffed hedgehog is very soft and has a really nice squeaker in it. I can already tell that it will absolutely not hold up to an aggressive chewer, but it will be fun for a day or two for my pup. It would probably be way better as a giant toy for a tiny dog, but it was so cute that I couldn't resist for my husky mix.
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Reviewed in the United States on April 21, 2025
M
Verified Purchase
Michael J1S
Port Orchard, US
★★★★★ 5
Great toy but easy to extract the stuffing
Style: Hedgehog
Theyvare my dogs favorite but wish they'd last more than 3 months.
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Reviewed in the United States on April 27, 2026

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