SKU: 89758645666

Hillman 5/8 in. Diameter x 4 in. Length Heat-Treated Steel Hex Head Cap Screw, Grade 8, Coarse Thread, 25-Pack

Sale price$54.90 Regular price$61.00
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Description

Hillman 5/8 in. Diameter x 4 in. Length Heat-Treated Steel Hex Head Cap Screw, Grade 8, Coarse Thread, 25-PackHillman Grade 8 Hex Head Cap Screws, 5 8" x 4", 25 Pack Heavy duty Grade 8 hex head cap screws designed for high strength fastening in structural and mechanical applications. Made from heat treated steel with coarse threads for secure grip and durability. Ideal for use with a nut or tapped hole and tightened with a wrench or drill. Key Features: High Strength Grade 8: Engineered for demanding loads and structural fastening Heat Treated Steel: Enhanced

Hillman Grade 8 Hex Head Cap Screws, 5/8" x 4", 25-Pack

Heavy-duty Grade 8 hex head cap screws designed for high-strength fastening in structural and mechanical applications. Made from heat-treated steel with coarse threads for secure grip and durability. Ideal for use with a nut or tapped hole and tightened with a wrench or drill.


Key Features:

  • High Strength Grade 8: Engineered for demanding loads and structural fastening
  • Heat-Treated Steel: Enhanced hardness and durability for long-term performance
  • Coarse Thread: Reliable bite and quick assembly in tapped holes or with nuts
  • Washer Face Under Head: Provides better load distribution and seating
  • Multi-Use Fastener: Tighten with wrench or drill for versatile installation

Specifications Table:

Specification Details
Material Steel
Finish/Style Heat Treated
Grade 8
Head Type Hex Head
Diameter 5/8 in
Length 4 in
Thread Type Coarse
Packaging Type Boxed
Number in Package 25
Unit of Measurement Metric

Frequently Asked Questions (FAQ):

Q: Are these fully threaded?
A: They are partially threaded Grade 8 hex cap screws, providing unthreaded shank for shear strength.


Q: What tools are needed for installation?
A: Tighten using a wrench or a drill with the appropriate hex socket.


Q: Do these come with nuts or washers?
A: No. This pack includes only the screws; nuts and washers are sold separately.


Q: What is the thread type?
A: Coarse thread.


Q: What is included in the pack?
A: 25 hex head cap screws measuring 5/8 inch diameter by 4 inch length.


Industrial Strength with Clean, Purposeful Lines

The crisp hex profile and solid heat-treated steel bring a refined industrial edge to utility spaces and custom builds. I love the confident Grade 8 presence—quietly powerful and impeccably functional. Pair these with matte black hardware for a modern, engineered aesthetic. A must-have for elevating practical projects with enduring, luxurious integrity.


Choose Hillman Grade 8 hex cap screws for a secure, long-lasting fastening solution in your toughest projects.

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: 89758645666

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Willy Bill
West Palm Beach, US
★★★★★ 5
Great Filter
Size: (Pack of 1)
This fits fine. Just wish it was a little easier to change.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 26, 2026
E
Verified Purchase
em
Massapequa, US
★★★★★ 5
More power, slightly lower (8%) MPG.
Size: (Pack of 1)
Installed on a 2.0 liter Subaru Impreza. I drive up/down the I5 in california 3-4 times a year. For those that don't know there is about a 200 mile flat stretch where everyone runs at 75-85mph. With various filters (FRAM, BOSCH, Subaru OEM), I would consistently get 29.8 mpg. Once I installed the K&N, I could feel the car pulling with a bit more power, but I noticed that I was getting about 27.5 mpg. Totally worth it as the impreza is a little under powered and I don't drive many miles (6k/year) but if you are putting a lot of miles on your car, you may want to have more mpg.
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Reviewed in the United States on May 24, 2026
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GregUPerkio
Chelsea, US
★★★★★ 5
fits my 2013 chevy suburban 5.3 and appears to be high quality
Size: (Pack of 1)
fits my 2013 suburban perfectly. looks to be a well constructed unit.
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Reviewed in the United States on March 29, 2026
G
Verified Purchase
Gahvno
Fort Morgan, US
★★★★★ 5
Very good quality comparable to OEM at a much more reasonable price point.
Size: (Pack of 1)
Last December we bought our first new car in 21 years and the first thing I did is stock up on cabin and engine air filters. I've got nothing against dealership OEM parts and pieces but what I do have an issue with is the prices. Luckily, we all have a bit of control over access to OEM quality parts and pieces at significantly more reasonable prices via Amazon. This filter and it's matching cabin filter are excellent in value and take less than 5 minutes to replace. Compare that to paying the hourly rate at your dealer plus the dealership retail price and you'll do what I did and stock up on these two filters. Definitely recommended.
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Reviewed in the United States on September 25, 2025
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Little Oak
Phoenix, US
★★★★★ 4
It will fit a 2022 Subaru Outback
Size: (Pack of 1)
Higher quality than OEM item fit and arrived on time. This was for a 2023 Subaru Outback
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Reviewed in the United States on September 15, 2025

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