SKU: 20374358317

Hillman 5/8 in. D x 3 in. L Heat-Treated Steel Hex Head Cap Screw, Grade 8, 25-Pack

Sale price$68.39 Regular price$75.99
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Description

Hillman 5/8 in. D x 3 in. L Heat-Treated Steel Hex Head Cap Screw, Grade 8, 25-PackHillman Grade 8 Hex Head Cap Screws, 5 8" x 3", 25 Pack Heavy duty Hillman hex head cap screws deliver Grade 8 strength for demanding assemblies. Heat treated steel with a washer face under the head provides secure clamping and long lasting wear resistance. Key Features: Grade 8 Strength: Heat treated steel for high tensile performance in heavy duty applications Washer Face Head: Built in bearing surface under the hex head improves load distribution

Hillman Grade 8 Hex Head Cap Screws, 5/8" x 3", 25-Pack

Heavy-duty Hillman hex head cap screws deliver Grade 8 strength for demanding assemblies. Heat-treated steel with a washer face under the head provides secure clamping and long-lasting wear resistance.


Key Features:

  • Grade 8 Strength: Heat-treated steel for high tensile performance in heavy-duty applications
  • Washer Face Head: Built-in bearing surface under the hex head improves load distribution and sealing
  • Partially Threaded Shank: Added shear strength where it matters; coarse thread for quick starts
  • Durable Finish: Yellow dichromate/heat-treated finish enhances corrosion and wear resistance
  • Bulk Convenience: 25-pack for jobsite efficiency and consistent hardware matching

Specifications Table:

Specification Details
Brand Hillman
Diameter 5/8 inch
Length 3 inch
Head Type Hex head with washer face
Material Steel
Grade Grade 8
Thread Type Coarse
Threading Partially threaded shank
Finish Heat-treated yellow dichromate-style finish
Number in Package 25 pack
Packaging Type Boxed
Tightening Method Wrench or drill/driver
Category Hex Bolts
Unit of Measurement Imperial
Package Dimensions (L x W x H) 5.3 in x 4.3 in x 3.3 in
Package Weight 7.7 lbs

Frequently Asked Questions (FAQ):

Q: What size are these screws?
A: They are 5/8 in. diameter by 3 in. length, coarse thread.


Q: Are these fully threaded?
A: No. They are Grade 8 and partially threaded along the shank for added strength.


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


Q: What material and finish are used?
A: Heat-treated steel with a yellow dichromate-style finish for strength and wear resistance.


Q: How many are included?
A: This box contains 25 hex head cap screws.


Industrial Strength, Streamlined Form

The bold geometry of a hex head brings a clean, purposeful rhythm to utility spaces. I love the subtle sheen of heat-treated steel—quietly powerful, impeccably functional. Use these Grade 8 cap screws to anchor butcher-block islands or exposed shelving for an honest, refined industrial note. They’re the precision detail that elevates hardworking design into everyday luxury.


Choose these Grade 8 Hillman cap screws for reliable, heavy-duty fastening that lasts—add the 25-pack to your project list 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: 20374358317

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4.0 ★★★★★
Based on 19 reviews
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Product Reviews
J
Verified Purchase
Jennifer
Omaha, US
★★★★★ 4
Long lasting
Color: Dogwood & Calming, Size: Medium
My dogs love these bones.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 25, 2026
K
Verified Purchase
Kelli Thornburg
Birmingham, US
★★★★★ 5
Puppy loves these sticks!
Color: Dogwood & Calming, Size: Medium
Dogs love these sticks! Must smell and taste like real wood because it keeps my puppy from bringing real sticks in the house from outside. She is a heavy chewer and these sticks keep her occupied. We are on our 2nd set.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 27, 2026
C
Verified Purchase
C. H.
Massapequa, US
★★★★★ 5
Great value for the price, highly recommend
Color: Dogwood & Calming, Size: Medium
Our dog loves these and chews them down to nothing. They are a great value for the money and the use your dog gets out of them. The size is just right for our doberdor.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 20, 2026
L
Verified Purchase
LC
Dallas, US
★★★★★ 3
Our dog loves it but it wasn’t durable enough to last
Color: Dogwood Jack, Size: Large, Color: Dogwood Jack, Size: Large
Our lab took to it as soon as we gave it to her. Perfect size for our 80 lb yellow lab. However, now that it’s in about 10 days, she’s able to break off chunks from this bone that are dime size or larger, and we have to throw it away
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 1, 2026
M
Verified Purchase
Matthew Anderson
Houston, US
★★★★★ 5
No problems after a year and a half
Color: Dogwood & Calming, Size: Medium
Have been regularly buying these for my corgi for about a year and a half. The 2 pack lasts about a month or 2 each time. Pieces break off in small enough pieces that they safely pass through his digestive system. He gnaws each one down to about 1/4 the original size before we take it away and give him a new one. He continues to have regular bowel movements and has a healthy appetite so I can’t imagine any problems arising after so long. I have tried other alternatives and every other similar chew breaks off in larger pieces and didn’t feel comfortable letting him chew/eat them. I noticed there are a few 1 star reviews saying their dogs got sick off these but after a year and a half I have had 0 issues with this product. I guess it depends on the dog and how big of pieces they are swallowing. My dog ingests pieces about the size of a grain of rice so just pay attention and you should be fine.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 18, 2026

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