SKU: 91208721423

Hillman 9/16 in. Diameter x 4 in. Length Heat-Treated Steel Hex Head Cap Screw, Grade 8, 25-Pack

Sale price$80.99 Regular price$89.99
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Description

Hillman 9/16 in. Diameter x 4 in. Length Heat-Treated Steel Hex Head Cap Screw, Grade 8, 25-PackHillman Grade 8 Hex Head Cap Screws, 9 16 in. x 4 in. (25 Pack) Heavy duty Hillman hex head cap screws deliver reliable fastening for structural and machinery applications. Made from heat treated Grade 8 steel with a washer face under the head, they provide high torque capability and long lasting wear resistance. Key Features: Grade 8 Strength: Heat treated steel offers superior tensile strength for demanding loads High Torque Capability: Hex cap head

Hillman Grade 8 Hex Head Cap Screws, 9/16 in. x 4 in. (25-Pack)

Heavy-duty Hillman hex head cap screws deliver reliable fastening for structural and machinery applications. Made from heat-treated Grade 8 steel with a washer face under the head, they provide high torque capability and long-lasting wear resistance.


Key Features:

  • Grade 8 Strength: Heat-treated steel offers superior tensile strength for demanding loads
  • High Torque Capability: Hex cap head with machine threads ensures secure tightening with wrench or driver
  • Better Seal: Integrated washer face under head improves contact and load distribution
  • Durable Finish: Yellow dichromate treatment resists wear and corrosion
  • Bulk Convenience: 25 pieces per box for shop or jobsite efficiency

Specifications Table:

Specification Details
Diameter 9/16 inch
Length 4 inch
Material Steel
Grade 8 (USS)
Finish Heat-treated yellow dichromate
Head Type Hex cap with washer face
Thread Type Coarse, partially threaded shank
Pieces per Package 25
Packaging Type Boxed
Brand Hillman

Frequently Asked Questions (FAQ):

Q: What size are these bolts?
A: Each bolt is 9/16 in. diameter and 4 in. length, partially threaded.


Q: What thread type do they use?
A: They have coarse machine threads (USS).


Q: Are these suitable for high-stress applications?
A: Yes. They are Grade 8, heat-treated steel designed for high-strength fastening.


Q: Do they include nuts or washers?
A: No. This package includes only the hex head cap screws.


Q: How many are in the package?
A: 25 screws per retail package.


Industrial Strength, Polished Precision

These Grade 8 cap screws bring an elegant order to the unseen structure of your projects, fusing rigor with refinement. The hex head silhouette and washer-faced design feel intentional—clean, engineered, and confident. Style them with blackened steel brackets or oiled oak to underscore a modern, utilitarian narrative. Consider them the quiet luxury of hardware: purposeful, enduring, and impeccably made.


Choose Hillman Grade 8 cap screws for dependable, high-torque fastening that elevates every 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: 91208721423

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Product Reviews
A
Verified Purchase
Andrea Pendergraff
Waukegan, US
★★★★★ 5
Great for side sleeper
Size: Sapphire King
I am loving this pillow. I waited a few months to see how I would feel about it, because I definitely did not like solid foam pillows previously. I’m a side sleeper, and my pillows were discontinued from a different bedding company. I tried a few others in the interim and was not happy with the support for my neck. Tried this one and I really love the shredded foam. It supports my neck and my head, it’s comfortable. It is movable if I need support in a certain position. It has extra fill if needed. Super happy with this purchase.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 28, 2026
D
Verified Purchase
Danette Popovich
Lowell, US
★★★★★ 5
Best Pillow Ever
Size: Sapphire Queen
Im in love...better then high end pillows and at a fraction of the cost. These are the only pillows I will ever buy again!!!
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Reviewed in the United States on May 27, 2026
A
Verified Purchase
Amazon Customer
Lowell, US
★★★★★ 3
Not cooling
Size: Sapphire Queen
We have waited to give a review. These 2 pillows we purchased based off the good reviews and that it states has cooling effect. Well a good point it has is the blend of stuffing. Also the ability to remove or add for your comfort. The softness/firmness is just right once you figure out your comfortable mix. However with having foam and poly blend, there is no cooling. Those tiny blue specs do nothing but add color to stuffing. Both my husband an myself wake up because our head is hot. Moving around alot helps with that but doesn't offer a restful sleep. I do like that it has a cover over the pillow so you have 2 zippers to go through to remove stuffing. This prevents waking with foam all over your bed. Overall I would have given a better review if actually offered the cooling effect. I could have saved money an just purchased the cheaper pillow they offer.
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Reviewed in the United States on December 29, 2025
S
Verified Purchase
Sigewulf
Grantham, US
★★★★★ 5
Tired of bad sleep try this pillow :)
Size: Sapphire Queen
Never owned a nice or expensive pillow finally after a good 25 years of super cheap pillows finally decided to try a nice one and see if there is a big difference and see what all the woot is about anyways in my opinion I am a side sleeper and I now just use this instead of multiple pillows and I can safely say it works very well seems too cool a little and is very comfortable plus bonus they give you extra fluff if you want to add more or replace but straight out of the box was absolutely perfect for sleeping I am insanely picky about it will ABSOLUTELY BUY THIS AGAIN 🥰🥰🥰 firmness absolutely perfect as is
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Reviewed in the United States on March 29, 2026
C
Verified Purchase
Chris T.
Battle Creek, US
★★★★★ 1
Flattened out a little over a month or using it
Size: Sapphire Queen
Figured I would wait a month or 2 before leaving a review. At first. The pillow was great. Very comfortable. Held up nice. Nice and firm and gave great support. After a month. It started to flatten out. Had to re-fluff it only to have flatted out faster this time. Now no matter how many times I fluff it. It doesn’t give the proper support any longer. I’ve bought 2 of these and they are identical. So it can’t be just a fluke for the 2 i have. I’m regretting the purchase as the price was fair when I bought them. But not any longer as they are not the same.
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Reviewed in the United States on January 26, 2026

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