SKU: 14784948981

Hillman 5/16 in. Diameter x 1-1/4 in. Length Heat-Treated Zinc Steel Hex Head Cap Screw, 100-Pack

Sale price$26.99 Regular price$29.99
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Description

Hillman 5/16 in. Diameter x 1-1/4 in. Length Heat-Treated Zinc Steel Hex Head Cap Screw, 100-PackHillman Grade 5 Zinc Hex Head Cap Screws, 5 16 in. x 1 1 4 in., 100 Pack These Hillman hex head cap screws are Grade 5 steel with a heat treated zinc finish for strength and wear resistance. Sized 5 16 in. diameter by 1 1 4 in. length, they feature coarse threads and a washer face under the head for secure fastening in wood or metal applications. Key Features: Grade 5 Strength: Heat treated steel provides higher tensile strength for demanding projects

Hillman Grade 5 Zinc Hex Head Cap Screws, 5/16 in. x 1-1/4 in., 100-Pack

These Hillman hex head cap screws are Grade 5 steel with a heat-treated zinc finish for strength and wear resistance. Sized 5/16 in. diameter by 1-1/4 in. length, they feature coarse threads and a washer face under the head for secure fastening in wood or metal applications.


Key Features:

  • Grade 5 Strength: Heat-treated steel provides higher tensile strength for demanding projects
  • Corrosion-Resistant Finish: Zinc plating helps protect against rust and wear
  • Washer Face Head: Built-in bearing surface under the hex head improves sealing and load distribution
  • Coarse Thread Design: Reliable grip and easier starts in tapped holes or with nuts
  • Contractor Pack: 100-piece boxed pack for efficient stocking and jobsite use

Specifications Table:

Specification Details
Brand Hillman
Diameter 5/16 inch
Length 1-1/4 inch
Material Steel
Finish Heat-treated zinc
Grade Grade 5
Thread Type Coarse (USS)
Head Type Hex head with washer face
Threading Partially threaded shank
Units per Pack 100 (boxed)
Package Height 3.5 in
Package Width 4.3 in
Package Length 4.3 in
Package Weight 3.4 lbs

Frequently Asked Questions (FAQ):

Q: Are these fully threaded?
A: They are partially threaded along the shank, typical of Grade 5 hex cap screws.


Q: What tools are needed for installation?
A: Tighten with a wrench or a drill/driver using the appropriate socket or hex bit.


Q: What is the thread type?
A: Coarse thread (USS).


Q: Can these be used outdoors?
A: The zinc finish offers basic corrosion resistance; for harsh or marine environments, consider stainless or hot-dipped galvanized fasteners.


Q: What size are these screws?
A: 5/16 inch diameter by 1-1/4 inch length.


A Polished Workhorse for Clean, Confident Connections

Crisp zinc sheen meets industrial rigor—these hex cap screws bring a tailored, utilitarian elegance to built-ins and exposed hardware moments. The washer-faced head sits neatly, creating a refined junction that feels intentional, not improvised. Style them with matte-black brackets or raw oak for a modern, mixed-material narrative. An essential, high-strength staple for projects where performance and polish must coexist.


Secure your projects with Grade 5 strength—add this 100-pack of Hillman zinc hex 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: 14784948981

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Paiger
Louisville, US
★★★★★ 5
Thanks to Amazon
Color: White, Size: 35.6W x 11.6D x 2H, 2 Pack
Well, one thing I have to say is we got one white shelf and one brown shelf and it did look like the box had been opened. But that being said Amazon was very wonderful and told us to keep it took it off my bill. They didn’t even charge me for it. The assembly was super easy. My husband said it was very easy to install. All he did was paint the brown and white and put it on the wall so we lucked out on that one thank you
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Reviewed in the United States on May 25, 2026
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Amazon Customer
Los Angeles, US
★★★★★ 4
Works well with new hardware.
Color: White, Size: 24W x 11.6D x 2H, 2 Pack
The product is good and strong if you install the bracket securely to the wall. Do not use the supplied fasteners for sheet rock. Buy new fasteners at Home Depot that clamp tightly to the sheet rock and everything will be fine.
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Reviewed in the United States on May 25, 2026
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Wayne Hawksley
Birmingham, US
★★★★★ 5
Black floating shelves
Color: Black, Size: 24W x 11.6D x 2H, 2 Pack, Color: Black, Size: 24W x 11.6D x 2H, 2 Pack
Look nice, not solid wood, but for the price they do the job!
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Reviewed in the United States on April 23, 2026
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Barb
Alexandria, US
★★★★★ 5
Very accurate sizing
Color: White, Size: 35.6W x 11.6D x 2H, 1 Pack
Great shelf, we have several in different lengths.
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Reviewed in the United States on April 16, 2026
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Brian Fentress
Carnegie, US
★★★★★ 5
Cradle for a PC laptop charging block
Color: Black
Seems to be pretty durable. I haven't had it long. The adhesive is still holding up as I applied it to the wall for a vertical hang to keep the block off the floor in my studio. I don't recommend trying to apply this to a wall that would have some kind of texture as the adhesive probably wouldn't hold very well. It's made for flat surfaces only or a wood surface. Make sure you clean the dust off the area you plan to attach to. As everyone knows charging blocks for PCs are incredibly huge and heavy; so far so good.
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Reviewed in the United States on March 30, 2026

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