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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4.7 ★★★★★
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J
Verified Purchase
Julia T.
West Palm Beach, US
★★★★★ 5
Better than tennis balls for dogs
Color: Orange, Size: Large
My trainer said better for my German Shepherds than tennis balls. They seem to like them, and they last a lot longer than regular tennis balls. We started using regular tennis balls as the dog ones broke first time out. They still managed to break the regular tennis balls also, just not a quickly. Once I found out tennis balls were not good on their teeth I bought these. The rubber ones are great.
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Reviewed in the United States on May 5, 2026
L
Verified Purchase
LRBuyer
Alexandria, US
★★★★★ 5
Great product!!
Color: Orange, Size: Large
Great balls!! Very durable and my destructive lab puppy hasn’t destroyed them and loves them!!
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Reviewed in the United States on May 24, 2026
J
Verified Purchase
JS
New York, US
★★★★★ 5
Great product
Color: Orange, Size: Large
My dog loves these balls and they are pretty indestructible my lab puts it thru the test daily!
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Reviewed in the United States on April 30, 2026
A
Verified Purchase
Altz Caregiver
Draper, US
★★★★★ 5
The only balls that have lasted with my dogs.
Color: Orange, Size: Large
I own a Southern Black Mouth Cur and a Belgian Malinois. They have destroyed every other ball I purchased in a matter of minuets, except for these. I will not waste my money on any other brand!! Also come in large and small sizes, for at home backyard play or carrying in a pocket. Okay, so my dogs have now had these balls to play with for months and finally put tiny holes in both. The holes are so small you can't see them, but you can hear air escaping when they chew on them. One actually folded in on itself one time but I was able to pop it right back out, throw it again, and watch my happy aggressive chewer catch it on the first bounce. And they both still bounce well! These Chuck It balls are easy to find if left outside because of their bright orange color, rinse off easily with just water when muddy and grunge covered from outdoor play, or you can use any soap or cleaner you prefer without damaging them. Perfect for any dog, big or small - indoors or outside in the dirt. Love these!!
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Reviewed in the United States on September 20, 2023
M
Verified Purchase
Matthew Alcock
Louisville, US
★★★★★ 5
Matches photo
Color: Orange, Size: Large
Three balls. Looks like the picture
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Reviewed in the United States on May 5, 2026

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