Hillman 9/16 in. Diameter x 3 in. Length Grade 8 Heat-Treated Steel Hex Head Cap Screws, 25-Pack
SKU: 5501494654

Hillman 9/16 in. Diameter x 3 in. Length Grade 8 Heat-Treated Steel Hex Head Cap Screws, 25-Pack

Sale price$66.59 Regular price$73.99
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Description

Hillman 9/16 in. Diameter x 3 in. Length Grade 8 Heat-Treated Steel Hex Head Cap Screws, 25-PackHillman Grade 8 Hex Head Cap Screws, 9 16 in. x 3 in., 25 Pack Heavy duty Hillman grade 8 hex head cap screws deliver high torque capability and reliable clamping power for structural and automotive applications. Heat treated steel with a yellow dichromate style finish enhances strength and wear resistance, while the washer face under the head helps create a better seal. Key Features: Grade 8 Strength: Heat treated steel for superior tensile strength

Hillman Grade 8 Hex Head Cap Screws, 9/16 in. x 3 in., 25-Pack

Heavy-duty Hillman grade 8 hex head cap screws deliver high torque capability and reliable clamping power for structural and automotive applications. Heat-treated steel with a yellow dichromate-style finish enhances strength and wear resistance, while the washer face under the head helps create a better seal.


Key Features:

  • Grade 8 Strength: Heat-treated steel for superior tensile strength in demanding applications
  • Hex Head + Machine Threads: Enables high torque tightening with a wrench or driver
  • Washer Face Under Head: Helps improve bearing surface and sealing
  • Partially Threaded Shank: Adds shear strength where clamping force is needed
  • Bulk Value: 25-piece retail pack for project or shop use

Specifications Table:

Specification Details
Diameter 9/16 inch
Length 3 inch
Material Steel
Finish Heat-treated; yellow dichromate-style wear resistance
Grade Grade 8 (USS)
Head Type Hex cap head with washer face under head
Thread Type Coarse machine threads
Thread Coverage Partially threaded shank
Number in Package 25 pack
Packaging Type Boxed
Unit of Measurement Imperial (size listed in inches)

Frequently Asked Questions (FAQ):

Q: What size are these bolts?
A: They are 9/16 inch diameter by 3 inch length, coarse thread.


Q: Are these fully threaded?
A: No. They are grade 8 bolts that are partially threaded along the shank.


Q: What tools are recommended for installation?
A: Tighten using a wrench or a compatible driver on the hex head.


Q: What is the material and finish?
A: Heat-treated steel with a yellow dichromate-style finish for added wear resistance.


Q: How many are included?
A: 25 screws per package.


Industrial Strength, Refined Finish

These hex cap screws bring a polished, utilitarian edge to any project—quietly powerful, impeccably precise. The yellow dichromate sheen lends a subtle glow, elevating hardware from purely functional to thoughtfully considered detail. Style them with blackened steel brackets or warm woods to balance toughness with texture. A steadfast essential, they anchor spaces—and ideas—with luxury-grade reliability.


Power your build with grade 8 confidence—add this 25-pack of Hillman hex head cap screws 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: 5501494654

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Customer Review
Houston, US
★★★★★ 4
looks nice, well made and styish.
This was a gift for a friend. It is well made, has a good modern style to it, comfortable to wear, she is taller, and it fits her well. Its a bit warm, so a fall kind of clothing option.
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Reviewed in the United States on February 5, 2026
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TripletMama Heather
Carnegie, US
★★★★★ 5
Perfect for casual wear and dressy style
Color: Dark Green, Size: Small
This sweater is soooo soft and the color is so rich. The fit of it is perfect, not too tight and not too baggy, just right and I used the size guide to pick my size. Just for reference, I am 5'3" and 130lbs, 38C bust. It's well made and washes great. I chose to hang dry mine as I typically don't put any of my sweaters in the dryer to dry, just to fluff them. I have this one in two colors, the green and the tan/beige and I would say they are both a true representative of the color shown.
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Reviewed in the United States on November 15, 2025
M
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MMF
West Palm Beach, US
★★★★★ 5
Love the long sleeves!!!
Color: White, Size: Small
Love it! I'm 5' 11" tall and I purchased this according to reviews. Several people commented on the length of the sleeves. I have a hard time finding sleeves long enough if it's not " tall" sized. It was perfect for me. If this washes nice I'm going to consider purchasing more in other colors. I ordered the white and just love the long ribbed cuffs with the line of buttons. Very soft.
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Reviewed in the United States on May 1, 2026
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Cindee
Belleville, US
★★★★★ 4
Nice cozy sweater, but handwashing is recommended
Color: Beige, Size: Medium
Soft and cozy, but does not wash well. Goes with everything. This sweater fits well and looks great. I received lots of compliments while wearing it.
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Reviewed in the United States on April 23, 2026
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Hillary K
Battle Creek, US
★★★★★ 5
Great sweater for winters in the Midwest
Color: Black, Size: X-Large
Love this sweater! I went back and got another color! The fit is true to size and very comfy. The button detail on the sleeves just adds a little pizazz. The weight of the sweater is perfect for winters in the Midwest.
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Reviewed in the United States on May 30, 2026

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