Hillman 1/2 in. Diameter x 5-1/2 in. Length Heat-Treated Steel Hex Head Cap Screw, 25-Pack
SKU: 51686577453

Hillman 1/2 in. Diameter x 5-1/2 in. Length Heat-Treated Steel Hex Head Cap Screw, 25-Pack

Sale price$79.19 Regular price$87.99
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Description

Hillman 1/2 in. Diameter x 5-1/2 in. Length Heat-Treated Steel Hex Head Cap Screw, 25-PackHillman Grade 8 Hex Head Cap Screws, 1 2" x 5 1 2", 25 Pack Heavy duty hex head cap screws made from heat treated steel for high strength fastening. Grade 8, partially threaded with a washer face for secure seatingideal for machinery, automotive, and structural applications. Key Features: Grade 8 Strength: Heat treated steel delivers superior tensile performance for demanding jobs Washer Face Head: Built in bearing surface under the hex head improves

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

Heavy-duty hex head cap screws made from heat-treated steel for high-strength fastening. Grade 8, partially threaded with a washer face for secure seating—ideal for machinery, automotive, and structural applications.


Key Features:

  • Grade 8 Strength: Heat-treated steel delivers superior tensile performance for demanding jobs
  • Washer Face Head: Built-in bearing surface under the hex head improves load distribution and seal
  • Partially Threaded Shank: Enhanced shear strength where unthreaded section bears load
  • Coarse Thread Compatibility: Reliable assembly with standard coarse-thread nuts and tapped holes
  • Bulk Pack Convenience: 25-pack keeps projects moving with consistent, matching fasteners

Specifications Table:

Specification Details
Diameter 1/2 inch
Length 5-1/2 inch
Material Steel
Finish Heat-treated; yellow dichromate style noted
Grade Grade 8 (USS)
Head Type Hex head with washer face
Thread Type Coarse
Threading Partially threaded along the shank
Number in Package 25 pack
Packaging Type Boxed
Category Hex Bolts / Hex Head Cap Screws
Package Dimensions (L x W x H) 6.8 in x 4.5 in x 3.3 in
Package Weight 8.7 lb

Frequently Asked Questions (FAQ):

Q: What size wrench or socket do I need?
A: These are 1/2-inch diameter hex head cap screws; select a socket sized for the corresponding hex head across flats per Grade 8 spec (check your hardware set).


Q: Are these fully threaded?
A: No. They are partially threaded to provide better shear strength at the unthreaded shank.


Q: What material and finish are these screws?
A: They are steel, heat-treated to Grade 8 with a yellow dichromate-style finish noted for strength and wear resistance.


Q: What thread type do they use?
A: Coarse thread, suitable for use with matching coarse-thread nuts or tapped holes.


Q: How many are included?
A: This box contains 25 screws.


Industrial Strength, Streamlined Presence

There’s a quiet elegance in precision hardware—these hex cap screws bring a tailored, industrial note to any build. The crisp washer-faced head feels intentional, a small but striking detail that elevates utility to design. Use them to accent exposed joinery on workshop cabinetry or a rugged shelving system for a subtly architectural moment. Their Grade 8 strength ensures beauty backed by unwavering performance—luxury in the details.


Equip your next build with Grade 8 confidence—add this 25-pack of Hillman hex head cap screws to your cart now.

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: 51686577453

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M
Verified Purchase
Mo
Lake Worth, US
★★★★★ 5
Love this
Color: Rustic Brown, Number Of Shelves: 4, Size: 15.7in
Love these shelves so easy to put up so beautifully made and really enjoy the way they set on my wall very sturdy also!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 21, 2026
J
Verified Purchase
Jason
Lowell, US
★★★★★ 5
Looks nice, easy to install
Color: Rustic Brown, Number Of Shelves: 2, Size: 22in
This shelf is lightweight, looks nice, and was easy to install. It comes with a little level to help you install it properly. There are plenty of mounting holes to choose from, so it is easy to screw it directly into a stud, or to just use holes that are convenient for you. It comes with a plethora of mounting hardware. I mounted mine a bit high up and chose to mount it upside down so that I wouldn't see the three screws that hold the shelf to the mounting bracket.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 8, 2026
S
Verified Purchase
Sonya H
Whiting, US
★★★★★ 5
Excellent floating shelves look very high end
Easy to install and bracket is hidden once shelf is installed Very sturdy. Wipe clean surface.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 21, 2026
M
Verified Purchase
Marily
Pawtucket, US
★★★★★ 5
Great shelves!
Size: 24x5.8, Color: Black, Size: 24x5.8, Color: Black
I love these shelves (I purchased 6 shelves total). The size I got was perfect, looks phenomenal, & quality is great too! Only negative thing I’d say is that it could be difficult for some people to set up as it needs to be leveled, & can be hard to align with other things since the part that attaches to the wall is separate from the shelf (due to its floating design) but once it’s up, it looks great. Definitely good value for money with its quality. I have them to hold up decorations/toys, & you think some of my shelves have about 5lbs of stuff on it & I’ve had no issues, so functionality is good.
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Reviewed in the United States on December 12, 2025
K
Verified Purchase
Ken Antunes
Bozeman, US
★★★★★ 5
Easy install and looks good
Exactly as expected. Easy to install and look great.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 6, 2026

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