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Description
Hillman 5/8 in. Diameter x 5-1/2 in. Length Grade 5 Heat-Treated Zinc Steel Hex Head Cap Screws, Coarse Thread, 25-PackHillman Grade 5 Hex Head Cap Screws, 5 8" x 5 1 2", 25 Pack Durable grade 5 hex head cap screws designed for heavy duty fastening. Made from heat treated zinc plated steel with coarse threads and a washer face for a secure seal, ideal for use with a wrench or drill in tapped holes or with a nut. Key Features: Grade 5 Strength: Heat treated steel for dependable performance in demanding applications Protective Zinc Finish: Corrosion resistant coating
Hillman Grade 5 Hex Head Cap Screws, 5/8" x 5-1/2", 25-Pack
Durable grade 5 hex head cap screws designed for heavy-duty fastening. Made from heat-treated zinc-plated steel with coarse threads and a washer face for a secure seal, ideal for use with a wrench or drill in tapped holes or with a nut.
Key Features:
- Grade 5 Strength: Heat-treated steel for dependable performance in demanding applications
- Protective Zinc Finish: Corrosion-resistant coating extends service life
- Coarse Thread Design: Promotes quick engagement and strong hold in tapped holes
- Washer Face Under Head: Improved sealing and load distribution during tightening
- Bulk Pack Convenience: 25 screws per boxed pack for jobsite efficiency
Specifications Table:
| Specification | Details |
|---|---|
| Brand Name | Hillman |
| Material | Steel |
| Finish | Heat Treated Zinc |
| Grade | 5 |
| Head Type | Hex Head |
| Diameter | 5/8 inch |
| Length | 5-1/2 inch |
| Thread Type | Coarse |
| Threading | Partially threaded along shank |
| Washer Face | Washer face under head for better seal |
| Number in Package | 25 pack |
| Packaging Type | Boxed |
| Use | For use with a nut or in a tapped hole; tighten with wrench or drill |
Frequently Asked Questions (FAQ):
Q: Are these fully threaded?
A: No. They are grade 5 screws that are partially threaded along the shank.
Q: What tools are recommended for installation?
A: Tighten with a wrench or a drill; use with a nut or in a properly tapped hole.
Q: Do they resist corrosion?
A: Yes. The zinc finish provides corrosion resistance for general-purpose use.
Q: What thread type do these screws have?
A: Coarse thread.
Q: What is included in the package?
A: A boxed pack of 25 hex head cap screws sized 5/8 inch diameter by 5-1/2 inch length.
Industrial Integrity, Clean Hardware Elegance
These hex cap screws bring a crisp, utilitarian polish to any structural detail. The zinc finish catches light with subtle sophistication, while the bold hex head adds graphic geometry to exposed hardware moments. Style them in open-shelf brackets or sleek, workshop-inspired furnishings for a tailored, architectural vibe. Essential, resilient, and refined—these fasteners anchor luxurious living with quiet confidence.
Secure your projects with grade 5 strength—add this 25-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:
- 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
4.8 ★★★★★
Based on 234 reviews
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Product Reviews
★★★★★ 1
Very Disappointed with this Vacuum
After having a Shark Robot Vacuum for many years, my husband decided to upgrade to newer technology (easier boundary settings, better mapping etc)
On a good note, when this thing works - it works great. One of my biggest complaints with the Shark was I had to put physical boundary strips at the top of the stairs etc. This Eufy is very easy to set "no go zones" on the app, works famously in that aspect. This vac also seems to "work" in a more organized manner. I can see on the app exactly what was cleaned after every scheduled cleaning etc. The Shark would just buzz around the house all willy nilly, but this Eufy seems to be very organized in the cleaning, not missing anywhere. Now for the most aggravating part. I have my Eufy scheduled to clean every night @ 1:00 am, while we are sleeping. Most nights @ 1:15 am I get a notification on my phone "Roller Brush Stuck". Well obviously I don't see the notification until morning. I go "find" Eufy (which is easy with the app - shows you right where she is - another nice thing compared to the Shark) Pull the Roller Brush, which mind you, nothing is wrong with, it is not stuck, there is nothing wrapped around it etc. Put it back in & restart. This has done this since day one, brand new out of the box. After doing some scouring of the Internet, I see that this is a big complaint with many other owners of this model. From what I gather, Eufy is aware of this and it is a known problem. I called Eufy Customer Care after about using this for one week. The phone call lasted over 45 minutes (part of my life that I will never get back!) Now mind you, the representative was very helpful & thorough. We walked through a couple procedures, (The Rep had me pull the roller brush etc & report to her what I was "seeing") Which again, I had performed everything the Rep had me do religiously for the past week, but No, she like wouldn't take my word for it, I had to do all this again while on the phone with her - - almost like she didn't believe me at first. Next, the Rep offered to send me a "newer design roller brush" Ok, cool, if it solves the problem let's do it - I just wanted to get off the phone & on with my day. Oh wait, there are no new design roller brushes in stock. Now I'm told to send just the robot back (not the dock) I told the Rep to send me a call tag, as I wasn't going to pay shipping on a "brand new used one week" item. Oh wait, now she has located the replacement roller brushes. So here we are back to the original solution, she will send me a replacement roller brush. Took my name, my address, phone number, name of first & last born children etc. Just a long drawn out process to send me the "fix" for their known manufacture problem. So to make my long story even longer, here I sit a month and a 1/2 later without ever receiving the replacement brush and an unreliable product who doesn't complete her "mission" most nights. I wish this vacuum was still within the 30 day Amazon return period, because I would have sent it back after experiencing this defect. However my husband had bought this for me for Christmas (before the date that Amazon offers their extended holiday returns window) I didn't even unbox this vacuum before the 30 days were up.
The App with the mapping & the expansive scheduling options is great compared to the Shark, but I bought the Eufy to vacuum, which she fails @ nightly.
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Reviewed in the United States on February 5, 2026
★★★★★ 5
Absolutely amazing! Working flawlessly for over a month, so far.
Color: White
I am very pleased with the performance so far. The strengths are the ease of setup, the accuracy of its mapping and carpet/floor recognition, the quality of its cleaning and mopping, and the entertainment of just watching. There are weaknesses. The documentation is sparse and pretty useless and tech support has been ghosting me..no responses. So hunt and peck with the App, mostly. Hard to really customize by trial and error. While it vacuums very well, it does not empty as well, really requiring the owner to manually empty the dust bin. No big deal. Maintenance recommendations are hidden on the website and I suspect it is advisable to do some maintenance after every use. The strengths win, however.
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Reviewed in the United States on May 23, 2026
★★★★★ 5
User friendly, Pet Hair Approved, Quite Powerful Robot Vacuum
Color: White
We prviously had an Eureka E10 vacuum and mop robot for 4 years. We had no idea what we were missing until we purchased this Narwal Freo X10 Pro.
It maps very fast.
It is extremely quite.
The vacuum then mop with a refreshed mop head solution is much better than dragging around a robot mop pad with no way to clean it without removing and washing it.
We have 3 Australian Sheppards that shed alot. This was the number one concern, whereas the prvious unit needed daily attention. Not a single hair tangle in the floating rotating brush of this unique Narwal Freo X10 Pro Robot vacuum.
4 months of no robot management is wonderful.
The application was easy to use with a ton of customizable options.
The AI option to recognize various floor types and throw rugs ensures a complete clean and quick simple setup.
Lastly the price vs product was very reasonable.
Great product! After spending many months researching, we are glad we made this investment.
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Reviewed in the United States on December 5, 2025
★★★★★ 1
After five months, it's basically a brick
Color: White
We've had this robot for five months, and it isn't durable. It worked fine for a couple months. But now it works fine for maybe 20 minutes and then just starts spinning around or going back in forth in the same area wasting its battery. The endless troubleshooting does not help. Cleaning all the sensors, resetting the robot, remapping the house ... Nothing helps. It is only being used in about 1100 sq ft of total space, so it's just not that complicated. It's been trying (and failing) to vacuum our smallish living room for nearly five hours, after several resets/etc. Back when it did function, the vacuum is rather loud if you want it to actually pick up anything big enough to see. The vacuum and mop are both terrible at inner corners, and the intersection between rugs and hardwood flooring is a total miss. There's like a 12" strip along all rugs where mopping never occurs. Definitely not a machine to be used without supplemental sweeping and mopping. The machine insists on starting rugs at the corner, so it pulls up even pretty heavy rugs sometimes. It's sucks up items like socks instead of avoiding them. Also, the machine has never successfully left alone no-vacuum rugs or no-go areas, so some rooms (like with high pile rugs or Christmas tree stands) just don't work without physical barricades. Really, really makes me miss the old reliable roombas...
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Reviewed in the United States on April 21, 2026
★★★★★ 5
This vacuum is a game changer
Color: White
Not all robotic vacuums are the same, and after testing so many of them in my life this one has outperformed the others hands down! From the suction power, to the battery life, and then the app I can't find a single thing I don't love.
The robot is and to pickup small crumbs, dirt, the typical messes, but most importantly it picks up kitty litter like it's nothing. This is an instant game changer. I no longer need to clean up after a robot. It's amazing!
The battery life is great! I have a 2500 sq ft house and it can handle all of it before charging. The "home base" makes this effortless where I just schedule my cleans and it takes care of the rest.
The app is really nicely built. It's simple and easy to navigate but it also gives me all of the advanced options such as invisible walls and no-go zones.
Overall, this is robotic vacuum is my new go-to and I look forward to using it for many years to come!
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Reviewed in the United States on April 14, 2026