SKU: 9018861940

Hillman 5/8 in. Dia x 2-1/2 in. L Grade 8 Heat-Treated Steel Hex Head Cap Screws, Coarse Thread (25-Pack)

Sale price$62.09 Regular price$68.99
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Description

Hillman 5/8 in. Dia x 2-1/2 in. L Grade 8 Heat-Treated Steel Hex Head Cap Screws, Coarse Thread (25-Pack)Hillman Grade 8 Hex Head Cap Screws, 5 8 in. x 2 1 2 in., 25 Pack Heavy duty Grade 8 hex cap screws built from heat treated steel for high strength fastening. The 5 8 in. diameter, 2 1 2 in. length bolts feature coarse threads and a washer face under the head for a secure, durable hold in structural applications. Key Features: High Strength Grade 8: Heat treated steel delivers superior tensile strength for demanding projects Coarse Thread Grip:

Hillman Grade 8 Hex Head Cap Screws, 5/8 in. x 2-1/2 in., 25-Pack

Heavy-duty Grade 8 hex cap screws built from heat-treated steel for high-strength fastening. The 5/8 in. diameter, 2-1/2 in. length bolts feature coarse threads and a washer face under the head for a secure, durable hold in structural applications.


Key Features:

  • High-Strength Grade 8: Heat-treated steel delivers superior tensile strength for demanding projects
  • Coarse Thread Grip: Partially threaded shank ensures strong engagement in tapped holes or with nuts
  • Washer Face Under Head: Provides better seating and load distribution
  • Durable Finish: Yellow dichromate treatment enhances wear and corrosion resistance
  • Contractor Pack: 25-piece boxed pack for jobsite efficiency

Specifications Table:

Specification Details
Diameter 5/8 inch
Length 2-1/2 inch
Material Steel
Grade Grade 8
Finish Heat-treated yellow dichromate
Thread Type Coarse
Threading Partially threaded shank
Head Type Hex head with washer face
Pieces per Pack 25
Packaging Type Boxed
Tightening Method Wrench or drill/driver socket

Frequently Asked Questions (FAQ):

Q: Are these fully or partially threaded?
A: They are partially threaded along the shank, with coarse threads.


Q: What tools are needed for installation?
A: Tighten using a wrench or a compatible socket/driver.


Q: What grade are these bolts?
A: Grade 8, suitable for high-strength applications.


Q: Do they include nuts or washers?
A: No, this pack includes only hex head cap screws.


Q: What is the size?
A: Each bolt is 5/8 in. diameter by 2-1/2 in. length.


Industrial Strength, Clean Hardware Presence

These Grade 8 hex cap screws bring a crisp, utilitarian polish to exposed fastener moments. The bold head and warm yellow dichromate finish create a subtle accent against raw woods and dark metals. Try them on open shelving brackets or custom fixtures where hardware becomes part of the story. It’s a small detail that telegraphs strength—and luxury—in every turn.


Secure your build with Grade 8 reliability—add this 25-pack to your cart 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: 9018861940

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Chris
Whiting, US
★★★★★ 2
Don’t use for automotive
Color: 40FT Wire+40FT Cable Sleeve
Don’t get me wrong it’s not a horrible product but these wires have an extreme amount of resistance to them, and once they get hot they drop voltage drastically. It was nice it came with a bunch of eyelets and made it easy to assemble but unfortunately once they were over 100F temp (live in Florida so cars get way hotter than that on the inside) the voltage would go from a normal 12.5-13.5v all the way down to 8v. Partially my fault I did not notice they were CCA wire instead description, would not recommend for automotive use.
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Reviewed in the United States on June 25, 2025
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Freddy
Los Angeles, US
★★★★★ 5
Good price works great
Great product
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Reviewed in the United States on May 21, 2026
C
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Chris Crittenden
Port Orchard, US
★★★★★ 5
Amplifier
Works good
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Reviewed in the United States on April 29, 2026
S
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Shawn
Charlottesville, US
★★★★★ 1
Low quality. Recommend something from a better brand.
Low quality. Seemed fine until the first one I ordered one of the terminals broke off with very little tightening force. The replacement i had ordered worked for a few days then quit working altogether. Overall disappointed.
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Reviewed in the United States on April 8, 2026
A
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Ailyn
Chelsea, US
★★★★★ 5
Bueno
Lo recomiendo
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Reviewed in the United States on March 21, 2026

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