SKU: 26957092178

Hillman 5/16 in. Diameter x 1-3/4 in. Length Heat-Treated Zinc Steel Hex Head Cap Screw, 100-Pack

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Description

Hillman 5/16 in. Diameter x 1-3/4 in. Length Heat-Treated Zinc Steel Hex Head Cap Screw, 100-Pack5 16 in. x 1 3 4 in. Hex Head Cap Screw (100 Pack) Durable Hillman Grade 5 hex head cap screws made from heat treated zinc steel for reliable fastening in general construction and repair. The partially threaded shank provides strong clamping force, while the corrosion resistant finish stands up to demanding environments. Key Features: Grade 5 Steel Strength: Heat treated zinc steel for dependable performance in structural and repair applications

5/16 in. x 1-3/4 in. Hex Head Cap Screw (100-Pack)

Durable Hillman Grade 5 hex head cap screws made from heat-treated zinc steel for reliable fastening in general construction and repair. The partially threaded shank provides strong clamping force, while the corrosion-resistant finish stands up to demanding environments.


Key Features:

  • Grade 5 Steel Strength: Heat-treated zinc steel for dependable performance in structural and repair applications
  • Corrosion-Resistant Finish: Zinc treatment helps protect against rust and wear
  • High-Torque Hex Head: Hex cap design with machine threads supports strong tightening with wrenches or sockets
  • Partially Threaded Shank: Promotes superior grip and reduces shear movement between materials
  • Bulk Value Pack: 100-piece pack for jobsite efficiency and shop inventory

Specifications Table:

Specification Details
Diameter 5/16 in.
Length 1-3/4 in.
Head Type Hex head cap screw
Material Heat-treated zinc steel
Thread Machine thread, partially threaded
Grade Grade 5
Pack Quantity 100 pieces

Frequently Asked Questions (FAQ):

Q: What tools are recommended for installation?
A: Use a wrench or socket sized for the hex head; pre-drilling a hole matching the bolt diameter is recommended for best results.


Q: What grade are these cap screws?
A: They are Grade 5, suitable for most general-purpose fastening when matched with Grade 5 nuts and washers.


Q: Are these fully threaded?
A: No, they are partially threaded to maximize clamping force and reduce shear.


Q: What materials are these made from?
A: Heat-treated zinc steel for strength and corrosion resistance.


Q: Can these be used outdoors?
A: Yes, the zinc finish provides corrosion resistance; however, for harsh or marine environments, consider additional protection.


Industrial Poise in a Polished Package

These hex head cap screws bring a quiet, utilitarian elegance to exposed mechanical details. The heat-treated zinc finish feels crisp and intentional, letting hardware become part of the story. Use them with blackened steel brackets or raw oak to create a tailored contrast. It’s the refined hardware choice that elevates everyday assembly to luxe craft.


Stock your shop with this 100-pack of Grade 5 Hillman cap screws for strong, corrosion-resistant fastening that’s ready for any project.

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: 26957092178

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4.8 ★★★★★
Based on 21 reviews
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Product Reviews
J
Verified Purchase
Jenny
Draper, US
★★★★★ 5
Love the design, comfort and ease
Color: Grey, Color: Grey
Assembly was a breeze with the Amazon Basics Ergonomic Executive Office Desk Chair. The instructions were clear and easy to follow, and I had the chair put together quickly without any hassle. This simple setup made the whole experience even more satisfying from the start. In terms of comfort, the chair truly delivers. It provides excellent lumbar support, I assume it will make long hours at my desk much more enjoyable. The adjustable height feature lets me customize my seating position, and the flip-up armrests allow me to slide the chair neatly under my desk without worrying about damage. Overall, I couldn’t be happier with my purchase. The chair looks stunning in my office and perfectly complements the decor. It combines style, comfort, and practicality at a fantastic value, and I highly recommend it to anyone looking to upgrade their office chair. I love you so much that I ordered another one for my husband’s desk.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 24, 2025
L
Verified Purchase
Luke
Charlottesville, US
★★★★★ 5
Very comfortable
Color: Grey
I’m not sure if I am just transitioning from a very uncomfortable office chair, but this one is extremely comfortable. Very good dynamic lumbar support that reminds you that it’s there. Only cons would be a low back (I am 6’5”) but I’m not laying my head back anyways. Also the seat length is a touch short for me but standard size really. Great bang for buck with an open box deal. Easy to assemble. TBD on durability.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 10, 2026
A
Verified Purchase
Angela Higbee
Pawtucket, US
★★★★★ 5
BUY this chair!!!!!
Color: Cream
After using this chair for about a month, I can confidently say that it's one of the most comfortable office chairs I've sat in for an extended period of time. Being in school and studying 8+ hours a day at my desk would normally make my back hurt in any other chair. Fortunately, after using this chair all day I have very very minimal back pain, if any at all (definitely due to previous injuries). The cushion on the back of the chair is extremely supportive and comfortable over all. Cannot say enough good things about this chair!!!! Definitely worth the price and easy to put together.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 31, 2026
M
Verified Purchase
Mika
Lexington, US
★★★★★ 4
Good quality
Color: Grey
It was easy to put together. Material feels durable. Only downside is that it doesn't tilt lock and the arm rest height isn't adjustable (though it can be folded up). I'm 4'11" and the back is the perfect height for me with great neck and lumbar support. My feet kinda dangle but I use a foot rest so it's not a big deal. My boyfriend who's 5'10" says it's comfy but the back could be taller.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 27, 2025
K
Verified Purchase
KD
Lake Worth, US
★★★★★ 5
Perfect chair!
Color: Cream
I love this chair! Was hesitant to buy due to the price being a bit more than I wanted to spend, but I work from home and have terrible posture from sitting at my desk all day, so I needed something that would be conducive to helping me sit up properly. I put the chair together myself, it was heavy but overall pretty easy to do. The tools provided worked great and the directions were clear. Aesthetically, it’s a lovely neutral color and everyone who has seen it so far has complimented me and on how nice it is and how comfortable it looks — Indeed it’s a very expensive looking chair. The first time I sat on it I wasn’t sure if I was going to like it….maybe something about the lumbar support seeming to protrude too much? At any rate, I gave it a couple of days and I absolutely LOVE it. I can already feel my posture improving, no backaches and I’m perfectly comfortable all day long. I’ve had it for a couple weeks now and couldn’t be happier. It seems to be very well made, so I’m confident it will last a very long time and be worth the price. I HIGHLY recommend this chair!
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Reviewed in the United States on June 13, 2025

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