SKU: 55137518803

Hillman 1/2 in. D x 2-1/2 in. L Heat-Treated Steel Hex Head Cap Screw, Grade 8, 50-Pack

Sale price$74.69 Regular price$82.99
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Description

Hillman 1/2 in. D x 2-1/2 in. L Heat-Treated Steel Hex Head Cap Screw, Grade 8, 50-PackHillman Grade 8 Hex Head Cap Screws, 1 2" x 2 1 2", 50 Pack Heavy duty Hillman Grade 8 hex head cap screws deliver superior clamping force for automotive, machinery, and structural applications. Made from heat treated steel with a yellow dichromate finish, they feature a washer face under the head and coarse threads for strong, reliable fastening. Key Features: Grade 8 Strength: Heat treated steel provides high tensile strength for demanding

Hillman Grade 8 Hex Head Cap Screws, 1/2" x 2-1/2", 50-Pack

Heavy-duty Hillman Grade 8 hex head cap screws deliver superior clamping force for automotive, machinery, and structural applications. Made from heat-treated steel with a yellow dichromate finish, they feature a washer face under the head and coarse threads for strong, reliable fastening.


Key Features:

  • Grade 8 Strength: Heat-treated steel provides high tensile strength for demanding applications.
  • Enhanced Seal: Washer face under the head improves load distribution and seating.
  • Durable Finish: Yellow dichromate coating adds wear and corrosion resistance.
  • Coarse Thread: Partially threaded shank with coarse threads for quick, secure assembly.
  • Bulk Pack: 50 screws per box for efficient stocking and project coverage.

Specifications Table:

Specification Details
Diameter 1/2 inch
Length 2-1/2 inch
Material Steel
Finish Heat-treated yellow dichromate
Grade Grade 8
Head Type Hex head with washer face
Thread Type Coarse (USS)
Threading Partially threaded shank
Number in Package 50 pack
Packaging Type Boxed

Frequently Asked Questions (FAQ):

Q: What size are these screws?
A: Each screw is 1/2 in. diameter by 2-1/2 in. length with coarse threads.


Q: Are these fully threaded?
A: No. They are Grade 8 hex cap screws that are partially threaded along the shank.


Q: What tools are needed for installation?
A: Tighten using a wrench or compatible socket; a drill/driver with a hex socket can also be used.


Q: Can these be used outdoors?
A: The yellow dichromate finish offers added wear and some corrosion resistance, but for long-term outdoor exposure consider additional protection or stainless options depending on conditions.


Q: What thread standard do they use?
A: Coarse thread (USS) suitable for use with matching 1/2 in. coarse-thread nuts and tapped holes.


Industrial Strength with a Subtle Golden Sheen

This hex cap screw brings a refined, utilitarian beauty to hardware moments that matter. The yellow dichromate finish lends a warm glint, transforming a purely functional piece into a considered detail. Style it in exposed mechanical joints on custom furnishings or workshop fixtures for an honest, engineered aesthetic. It’s the quiet luxury of performance meeting polish.


Choose these Hillman Grade 8 hex cap screws for rugged, reliable fastening performance in your next build or repair.

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: 55137518803

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Beverly R.
New York, US
★★★★★ 5
Great customer service.
Glad I bought the protection. The vaccume worked great for a while then quit holding a charge. They refunded my purchase price (Amazon gift card).
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 12, 2025
E
Verified Purchase
Ellen Skerke
Belleville, US
★★★★★ 5
The pads worked well.
Size: for Saros 10R
I feel comfortable that it will work.
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Reviewed in the United States on January 22, 2026
N
Verified Purchase
Nicholas R. Pierce
Birmingham, US
★★★★★ 5
Really good to have
Size: for Q S5V
After owning a wireless vacuum mop I knew it was good to have extra parts like this on hand so I ordered these when I ordered the robot vacuum. Oh boy... when my vacuum did the dreaded run through dog poop I was very happy to be able to just throw the other parts away and replace them on the spot.
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Reviewed in the United States on May 5, 2026
E
Verified Purchase
Elizabeth
Carnegie, US
★★★★★ 5
Exactly what we needed
Size: for Q7 M5+
This is exactly what we needed for our vacuum.
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Reviewed in the United States on May 30, 2026
P
Verified Purchase
Paula D Shoemaker
Whiting, US
★★★★★ 4
Great Value and Perfect Fit for My Qrevo
Size: for Q S5V
This 34‑piece replacement set has been a great buy for my Roborock Qrevo. All the parts fit perfectly, install easily, and work just like the originals. The brushes and filters snapped right into place, and the mop pads feel thick and durable. After replacing everything, my vacuum immediately picked up more dust and debris. One thing to note: the kit didn’t include any instructions for the scent packs, so I placed them in the dust bag—hopefully that’s the correct spot. It would’ve been helpful to have a quick guide included. Overall, the amount of pieces you get for the price is a fantastic value, and it’s great having plenty of backups on hand.
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Reviewed in the United States on February 27, 2026

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