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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Lily🐝
Whiting, US
★★★★★ 5
Fabulous! I’ve purchased these more than once!
Size: 12 Inch, Color: Gold, Size: 12 Inch, Color: Gold
These are beautiful and the perfect size for the 12” wide boards I use. The lumber isn’t cut to exactly 12” so there is a slight gap in the back towards the wall which I like for cords, and the boards stay in place with bottom screws. These are very sturdy, thick, and solid. I have not had a single problem with any of them. They are easy to install and very functional. Definitely worth the cost. I have purchased a couple of times.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 28, 2024
M
Verified Purchase
M.J.
Massapequa, US
★★★★★ 5
Excellent shelf brackets.
Size: 12 Inch, Color: Black
Perfect exactly as advertised. Correct measurement at 12 inches. Product supplies All the screw for mounting. High quality and very sturdy. Used in my pantry. No instructions but don’t really need.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 7, 2026
M
Verified Purchase
michael borton
Grantham, US
★★★★★ 5
Quality and great looking for everything.
Size: 10 Inch, Color: Black
Easy to use , and works and looks great in the garage.
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Reviewed in the United States on March 14, 2026
G
Verified Purchase
Guadalupe Galan
Draper, US
★★★★★ 4
Heavy duty brackets!
Size: 8 Inch, Color: Gold, Size: 8 Inch, Color: Gold
These brackets are heavy duty and came with the correct hardware. They were easy to install, the two holes were so helpful to know where to mark them. I think because they’re heavy duty you can place a good amount of weight on your shelves. The only thing I wasn’t happy with is that 4/69 of shelves, the paint was chipping but it was the perfect gold color.
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Reviewed in the United States on February 14, 2026
P
Verified Purchase
Port
Charlottesville, US
★★★★★ 5
Really nice looking work great
Size: 4 Inch, Color: Black
Great looking
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 8, 2026

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