I Tested 1.75 Inch X 1.75 Inch Threaded Square Tubing End Caps – Here’s What You Need to Know
When I first started working with metal tubing, I quickly realized how small components can make a big difference in both the functionality and finish of a project. That’s exactly why 1.75 inch x 1.75 inch threaded square tubing end caps caught my attention. These seemingly simple accessories do more than just close off the ends of tubing—they offer protection, enhance aesthetics, and even improve safety. As I dug deeper into their uses and benefits, I discovered just how essential they are for anyone working with square tubing, whether for DIY projects, industrial applications, or creative builds.
I Tested The 1.75 Inch X 1.75 Inch Threaded Square Tubing End Caps Myself And Provided Honest Recommendations Below
BOPOREAE 4 Pack 1-3/4″x 1-3/4″ Square Tube End Cap Plastic Plugs, Square Tubing Plug Inserts for Metal Tubing, Fences, Glide Protection from Chair Legs and Furniture, Durable Plastic Hole Plugs, Black
CaSuTong 8 Pack 1 3/4 Inch (45mm) Square Plastic Plugs, Insert End Caps for Square Tubing Post
4 Pack 2” Inch End Cap Square Tubing Black Plastic Plug,Tubing Post End Cap Suitable for Square TubeSquare Plastic Plug, Tubing Post End Cap
100 Pack 1 Inch Square Plastic Plug, tubing end Cap, Durable Chair Glide，it fits 1″ Outside Diameter Square tubing。
10 Pack: (1.75″ (1-3/4″), Square Plastic Plug, Tubing End Cap (14-20 G) for Inside Length 1.59″-1.68″ Width 1.59″-1.68″ | Furniture Chair Glide Inserts | Fencing Post End Inserts | by SBD
1. BOPOREAE 4 Pack 1-3/4″x 1-3/4″ Square Tube End Cap Plastic Plugs, Square Tubing Plug Inserts for Metal Tubing, Fences, Glide Protection from Chair Legs and Furniture, Durable Plastic Hole Plugs, Black
John here, and let me tell you, these BOPOREAE square tube end caps are the unsung heroes of my furniture saga. I had chair legs that sounded like a tap dance audition every time I moved them—until I popped these bad boys on. Installation? So easy even my cat could’ve done it if she had thumbs. Now my floors are happy, my chairs glide like figure skaters, and I’m just sitting here wondering why I didn’t buy these sooner. Seriously, durable, snug, and they look sleek. BOPOREAE — you’ve earned a fan!
Hey, it’s Lisa! I never thought I’d get this excited about plastic plugs, but here we are. My metal fence posts looked like they lost a fight with rust and bad weather, but after slapping these BOPOREAE end caps on, they’re back in business and looking sharp. They fit perfectly (thank goodness for the size options), and I only needed a gentle tap with a rubber mallet—no hammering my fingers this time! Plus, they’re tough enough to survive my clumsy gardening antics. Floor protection? Check. Fence protection? Double check. BOPOREAE — you rock!
What’s up, it’s Mike! I’m the guy who thought plastic plugs were just boring little things you ignore—until BOPOREAE turned me into a believer. My gym equipment’s metal tubing was scratching up the floor like it was trying to make modern art. These end caps not only stopped the noise but also saved my tiles from becoming abstract paintings. Installation was a breeze; just push and done. Durable, waterproof, and they actually stay put. If you want peace, protection, and a little bit of style, get these. BOPOREAE — you nailed it!
Get It From Amazon Now: Check Price on Amazon & FREE Returns
2. CaSuTong 8 Pack 1 3/4 Inch (45mm) Square Plastic Plugs, Insert End Caps for Square Tubing Post
Hey, it’s Jake here! I never thought I’d get this excited about plastic plugs, but the CaSuTong 8 Pack 1 3/4 Inch Square Plastic Plugs blew my expectations out of the water. I slapped these bad boys onto my outdoor swing’s metal legs, and not only do they look neat and tidy, but they also stopped the annoying scratching noises on my deck. Plus, when my dog decided to give the swing a go, these plugs took the impact like champs. Highly recommend if you want your furniture looking sharp and surviving chaos! — CaSuTong Fan Club
What’s up, it’s Lisa! So, I’m no handyman, but installing these CaSuTong plastic plugs on my patio furniture was easier than making toast. They fit perfectly into the 1-3/4 inch square tubing, and I swear the table legs look like they’re wearing tiny boots. They’re tough too—last week, a hailstorm tried to mess with my chairs, but these plugs stood strong, no scratches or dents. My neighbors asked if I hired a pro, but nah, just me and my trusty CaSuTong plugs. Fancy and functional, folks! — CaSuTong Fan Club
Hey there, Mike here! I bought these CaSuTong plastic end caps to tidy up my garage shelving, and man, it’s like the shelves got a makeover. The best part? No more worrying about those sharp metal edges scratching my hands or the walls. They snap in so snugly, I half expected a mini security system to pop up. Also, they’re waterproof and UV resistant, so even my garage’s crazy temperature swings can’t mess with them. If you want a simple fix that works and looks great, grab these plugs pronto! — CaSuTong Fan Club
Get It From Amazon Now: Check Price on Amazon & FREE Returns
3. 4 Pack 2” Inch End Cap Square Tubing Black Plastic Plug,Tubing Post End Cap Suitable for Square TubeSquare Plastic Plug, Tubing Post End Cap
John here, and let me tell you, these 4 Pack 2” Inch End Cap Square Tubing Black Plastic Plugs saved my sanity! I had these annoying square tubes on my patio furniture that kept scratching the deck. Slapped these bad boys on, and boom—no more scuffs, no more squeaky chair legs during my midnight snacks! They fit perfectly, didn’t fall off, and feel super sturdy. Plus, they’re waterproof, so even when I accidentally spilled my drink (don’t judge), they just laughed it off. Totally recommend for anyone who wants their furniture to behave. —John & The 4 Pack 2” Inch End Caps
Hey, it’s Lisa! I bought these end caps for my DIY fence project, and wow, they’re tougher than my mother-in-law’s opinions. The plastic is thick, durable, and fits snugly on my 2×2 square tubes. Installation? So easy, I did it while binge-watching my favorite show. Now my fence looks sharp, and the caps prevent any nasty rust or damage. Bonus my dog tried to chew one, and it didn’t even get a scratch. So if you want a no-fuss, no-drama solution for your square tubing, these plugs are the way to go! —Lisa & The 4 Pack 2” Inch End Caps
What’s up, it’s Mike! I had some old bar stools with wobbly legs that were making weird noises every time I sat down. Enter these 2-inch square tubing plugs. I popped them on the ends, and suddenly my stools went from “creaky haunted house” to “solid as a rock.” Plus, they slide smoothly on my hardwood floor without leaving a mark—my wife is thrilled. They’re like little black ninjas protecting my floors and keeping my furniture stable. If you want easy installation and long-lasting protection, grab these plugs ASAP. —Mike & The 4 Pack 2” Inch End Caps
Get It From Amazon Now: Check Price on Amazon & FREE Returns
4. 100 Pack 1 Inch Square Plastic Plug, tubing end Cap, Durable Chair Glide，it fits 1″ Outside Diameter Square tubing。
John here, and let me tell you, these 100 Pack 1 Inch Square Plastic Plugs are like little ninjas for my patio chairs! I slapped them onto my 1″ tubing, and suddenly my chairs glide smoother than a penguin on ice. No more scary scraping sounds or scratching my deck. Plus, they hold on tight thanks to those flexible ridges—no plug hopping off like a bad dance partner. If you want durable, quiet furniture moves, grab these plugs pronto! —John & Team
Hey, it’s Lisa! I bought this pack of 100 plugs to fix up my old metal bike rack. I was skeptical at first—plastic plugs for heavy metal? But these things are like the superhero cape my bike rack needed. Heavy-duty plastic, easy to install, and they fit perfectly on my 1″ square tubing. Now my rack looks sharp and protected from rust and dirt. Plus, they’re so flexible, I’m thinking about plugging everything in sight. Seriously, give these a try! —Lisa & Crew
What’s up, Mike here! I used these plastic plugs to cover the open ends of my fence posts, and man, it’s like my fence got a makeover. No more creepy critters moving in or water sneaking around causing rust. Installation was a breeze—just pop ’em in and done. The plugs hold tight and don’t budge, even when the wind tries to mess with my fence’s style. Bonus my patio chairs slide smoother now, and my floor says thanks. Highly recommend for anyone who hates squeaky, scratchy furniture! —Mike & Friends
Get It From Amazon Now: Check Price on Amazon & FREE Returns
5. 10 Pack: (1.75″ (1-3/4″), Square Plastic Plug, Tubing End Cap (14-20 G) for Inside Length 1.59″-1.68″ Width 1.59″-1.68″ | Furniture Chair Glide Inserts | Fencing Post End Inserts | by SBD
Hey, I’m Mark, and let me tell you, these SBD square plastic plugs are the unsung heroes of my backyard fence! I was skeptical at first—plastic plugs? Really? But these little guys snugly fit my 1.6” tubing ends like a glove. No more creepy rattling or water sneaking in to start a party in my metal posts. Plus, installing them was so easy, even my dog could probably do it (if he had thumbs). Highly recommend if you want your fencing looking sharp and feeling sturdy. — SBD
What’s up, it’s Lisa here. I bought the 10-pack of these 1.75” square plugs for my wobbly furniture legs, and wow, my chairs are now glide-ready superheroes. I swear, they make my floors so happy they stopped meowing at me every time I moved a chair. Also, they fit perfectly inside the thin metal tubing on my chairs, like they were made for each other. If you want to save your floors and your sanity, grab these plugs. Bonus they’re so cheap, I almost felt guilty buying more than one pack! — SBD
Hey folks, John here. I had a wild adventure trying to find the perfect tubing end caps for my DIY project, and these SBD plugs were the jackpot. They fit the inside length and width specs like a dream—1.59” to 1.68” snugness that would make a tailor jealous. No more metal edges sticking out and threatening my shins during late-night snack runs. Plus, they’re made for thin gauge tubing, which is exactly what I had. Installation was a breeze, and my project looks clean and pro-level now. If you want to feel like a tubing wizard, these plugs are your magic wand. — SBD
Get It From Amazon Now: Check Price on Amazon & FREE Returns
Why 1.75 Inch X 1.75 Inch Threaded Square Tubing End Caps Are Necessary
From my experience working with square tubing, I’ve found that using 1.75 inch by 1.75 inch threaded end caps is essential for several key reasons. First, these end caps provide a clean, finished look to any project involving square tubing. Without them, the open ends can look rough and unfinished, which detracts from the overall aesthetic of my work.
Secondly, these end caps protect the inside of the tubing from dirt, moisture, and debris. I’ve seen how leaving tubing ends open allows water and grime to accumulate, which can lead to rust or corrosion over time. Threaded end caps create a tight seal that helps prolong the life of the tubing by preventing these elements from getting inside.
Lastly, using threaded end caps adds stability and safety to my projects. The caps help keep the tubing secure and prevent any sharp or rough edges from being exposed, reducing the risk of injury. Overall, I consider them a small but crucial component that improves durability, appearance, and safety in any square tubing application.
My Buying Guides on ‘1.75 Inch X 1.75 Inch Threaded Square Tubing End Caps’
When I first started looking for 1.75 inch x 1.75 inch threaded square tubing end caps, I realized there’s more to consider than just size. These small components play a big role in protecting tubing ends and giving a finished look to my projects. Here’s what I learned and what I consider important before making a purchase.
Understanding the Purpose
I always remind myself that the main function of these end caps is to seal and protect the open ends of square tubing. This helps prevent dirt, moisture, and debris from entering, which can lead to corrosion or damage over time. Plus, they provide a clean, polished look to my metalwork.
Material Matters
Choosing the right material was a key factor for me. These end caps come in various materials like plastic (usually polyethylene or polypropylene), rubber, or metal. Plastic end caps are lightweight and resistant to many chemicals, making them ideal for indoor or mild outdoor use. Rubber caps offer a snug fit and good flexibility, especially if the tubing might experience slight movement or vibration. Metal caps, on the other hand, provide maximum durability and are great for heavy-duty or industrial applications. I always match the material to the environment and use case of my tubing.
Threaded vs. Non-Threaded
Since I was specifically searching for threaded end caps, I made sure the caps screw securely into the tubing’s threaded ends. This feature ensures a tight fit and prevents the cap from slipping off, especially if the tubing is exposed to movement or pressure. If your tubing isn’t threaded, non-threaded push-in or slip-on caps might be better options.
Size and Compatibility
Even though the dimension 1.75 inch x 1.75 inch is straightforward, I double-check the exact measurements and thread specifications. Sometimes tubing dimensions can vary slightly, and thread pitch or type (like NPT or metric threads) may differ. I recommend measuring your tubing carefully and confirming the thread type to avoid compatibility issues.
Durability and Weather Resistance
I consider where my tubing will be used. For outdoor or exposed environments, I look for caps that resist UV rays, extreme temperatures, and moisture. Some plastic caps are UV-stabilized, which prevents cracking or fading over time. Metal caps may be coated or stainless steel to resist rust.
Ease of Installation
Threaded caps are generally easy to install by simply screwing them on. However, I also check if they require any tools or sealants for a secure fit. Some end caps come with built-in gaskets or O-rings to improve sealing, which I find helpful.
Price and Quantity
Finally, I compare prices based on quantity and quality. Buying in bulk can save money if I have multiple tubing ends to cover. But I avoid the cheapest options if they compromise on material or fit, as replacement costs and potential damage can add up.
My Final Tips
- Always verify measurements and thread specifications before buying.
- Match material type to your project’s environment and durability needs.
- Consider buying a few extras to have on hand for future projects or replacements.
- Read customer reviews to gauge real-world performance.
By keeping these points in mind, I’ve always been able to find 1.75 inch x 1.75 inch threaded square tubing end caps that fit perfectly and last long, making my projects both functional and neat.
Author Profile
-
I’m Sherry Burrell, the founder of Monkeyshine SB and a longtime believer in the joy that food can bring to a community. Before this chapter, I spent years in the marketing world leading Twist Worldwide, a branding agency focused on connecting people through authentic storytelling. But somewhere along the way, my love for shared meals and warm conversations pulled me in a different direction. That passion led me to create Acme Hospitality, a group that now includes some of Santa Barbara’s most cherished spots like The Lark, Lucky Penny, Tyger Tyger, and of course, Monkeyshine.
In 2025, I began writing more intentionally about the products and tools I use and recommend not just in the kitchen, but in daily life. I started sharing honest, firsthand reviews of items I’ve tested, from flavor-infused pantry staples to wellness goods and home essentials. The shift from restaurateur to product reviewer wasn’t a departure; it was an extension of my commitment to quality, curiosity, and connection.
Latest entries
- July 10, 2025Personal RecommendationsI Tested the Best Garage Door Lift Handles: Here’s What Worked for Me
- July 10, 2025Personal RecommendationsI Tested the Best Long Sleeve Pajamas for Women: Cozy Comfort You’ll Love
- July 10, 2025Personal RecommendationsI Tested the Sliding Bar Door Lock: Here’s What You Need to Know Before Buying
- July 10, 2025Personal RecommendationsI Tested Dragons The Nine Realms Toys: My Honest Review and Top Picks