SKU: 6791821376

Hillman 3/8 in. Dia x 1-1/2 in. L Heat-Treated Zinc Steel Hex Head Cap Screw, 100-Pack

Sale price$43.19 Regular price$47.99
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Description

Hillman 3/8 in. Dia x 1-1/2 in. L Heat-Treated Zinc Steel Hex Head Cap Screw, 100-PackHillman Grade 5 Hex Head Cap Screw, 3 8 in. x 1 1 2 in., 100 Pack Heavy duty hex head cap screws engineered from heat treated zinc plated steel for strong, wear resistant fastening. Grade 5 strength with partially threaded shank and washer face under the head delivers secure clamping in machinery, automotive, and structural applications. Key Features: Grade 5 Strength: Heat treated steel provides robust tensile strength for demanding projects

Hillman Grade 5 Hex Head Cap Screw, 3/8 in. x 1-1/2 in., 100-Pack

Heavy-duty hex head cap screws engineered from heat-treated zinc-plated steel for strong, wear-resistant fastening. Grade 5 strength with partially threaded shank and washer face under the head delivers secure clamping in machinery, automotive, and structural applications.


Key Features:

  • Grade 5 Strength: Heat-treated steel provides robust tensile strength for demanding projects
  • Corrosion-Resistant Finish: Zinc plating helps protect against rust and wear
  • Washer Face Head: Built-in washer face improves seal and load distribution under the head
  • Partially Threaded Shank: Coarse threads with an unthreaded section for precise alignment and strong clamping
  • Versatile Use: Ideal for use with a nut or tapped hole; tighten with a wrench or drill

Specifications Table:

Specification Details
Diameter 3/8 inch
Length 1-1/2 inch
Material Steel
Finish Heat Treated Zinc
Grade Grade 5
Head Type Hex head with washer face
Thread Type Coarse
Threading Partially threaded along shank
Number in Package 100
Packaging Type Boxed
Use For use with a nut or in a tapped hole; tighten with a wrench or drill
Package Height 3.5 in
Package Width 4.3 in
Package Length 4.3 in
Package Weight 5.6 lbs

Frequently Asked Questions (FAQ):

Q: Are these fully or partially threaded?
A: They are Grade 5 cap screws with a partially threaded shank and coarse thread.


Q: What size and length are the screws?
A: Each screw is 3/8 inch diameter and 1-1/2 inch length.


Q: Can these be used outdoors?
A: The zinc finish offers basic corrosion resistance, suitable for many indoor and light outdoor applications; for harsh environments, consider galvanized or stainless options.


Q: Do they have a built-in washer?
A: They feature a washer face under the hex head to improve sealing and load distribution.


Q: How many are in the box?
A: The package contains 100 screws.


Industrial polish that anchors the look

These hex cap screws bring a crisp, tailored hardware detail that feels both utilitarian and refined. The zinc sheen adds a subtle gleam, while the washer-faced head creates a clean, purposeful silhouette. Use them to unify exposed-joint furniture or workshop shelving for a cohesive, engineered aesthetic. A small detail with big impact—essential hardware for elevated, durable design.


Secure your projects with Grade 5 strength—add this 100-pack of Hillman 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: 6791821376

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4.3 ★★★★★
Based on 784 reviews
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C
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Christina
San Leandro, US
★★★★★ 5
Great product!
Size: Standard--white, Size: Standard--white
Very sturdy and great value for money! Speakers fit perfectly. You can adjust the width and tighten around the sides of the speaker so they’re not loose on the platform. Offers proper stability for the speakers, they will not fall out of the wall if they’re installed correctly and not overloaded with weight. I have the Edifier R1280T speakers mounted and they’re roughly 10-12 pounds each. **My only complaint which was not a big deal to me** As other people have mentioned, the white plate that hides the screws on the wall is not attached to anything. It was just hanging there loose with a gap between it and the wall, but I got these clear double-sided tape circles to adhere them to the wall and it worked !!! Very quick and easy solution. Maybe the seller could include a few clear stickies in the package moving forward?
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 19, 2024
A
Verified Purchase
Amazon Customer
Phoenix, US
★★★★★ 5
Ideal speaker wall mounts
Size: Standard--black
These speaker mounts were better than expected for the price. The mounts hold the speakers securely also tilt and swivel to get the sound where needed. Well thought out design, easy to mount, looks great also. Mounting hardware was included. I would purchase again.
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Reviewed in the United States on December 26, 2025
B
Verified Purchase
Bret BigDawg
Chelsea, US
★★★★★ 5
Well made, sturdy, and work great!
Work great for our KEF bookshelf speakers, would definitely buy again!
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Reviewed in the United States on April 28, 2026
C
Verified Purchase
Colby D. May
Belleville, US
★★★★★ 4
Almost perfect, absolutely fit for purpose, and a great value
Size: Standard--black
These are really, really close to being five stars, but because of my OCD tendencies when it comes to things being true and level, I can only go four. The way these mounts are made, speakers rest inside and on the inner surface of the L-shaped adjustable side brackets, and not on the large metal plate between them. Leveling on the fore-and-aft plane can easily be handled via the adjustment nut on the bottom of the bracket. But there is no provision for side-to-side leveling, so if the manufacturing of the side brackets is not within tolerance, you'll wind up with a speaker that's ever-so-slightly wonky...which is the case with ONE of my mounts. The bubble is still between the lines, but it's kissing the left line. Most would not care about this, and I'm not too bummed about it, but I am able to see that much out-of-true with the naked eye. It's not enough to pursue any kind of remediation, because the value on these really is awfully good. They are solidly built, easy to install, and easy to adjust. The manufacturer is apparently improving the product as they go based on feedback, as some issues that have vexed other owners have not been a problem for me, such as the wall plates being or coming loose (the design now ensures they stay put once pushed back to the wall), or the adjustment nut and bolt rotating freely and not staying tight (the ones on mine are great and function as intended). For the price, these are really hard to beat, and I have a feeling all the mounts like this with the different oddly-named brands are made in the same factory. That being the case, get the cheapest ones, and the day I bought mine, these were those.
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Reviewed in the United States on September 15, 2025
S
Verified Purchase
Seth Johnson
Massapequa, US
★★★★★ 5
Solid and easy to install
Size: Standard--black
These are nice, solid wall mounts. They assembled quickly and easily, and they can hold larger bookshelf speakers like my Cambridge Soundworks M60s. Adjusting the plate to match speaker size is pretty easy, and they seem to grip the speaker tight enough that they won't fall off. The tilt option is very useful and a good feature when speakers are mounted high and need to tilt down toward the listener. Just remember to tighten the bolt on the bottom once you've positioned it where you want it. I would definitely recommend these to anyone looking for solid, well priced speaker mounts.
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Reviewed in the United States on March 30, 2025

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