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🔧 Secure your woodwork like a pro—because your projects deserve the best!
This 80-piece set of 1/4"-20 metal threaded inserts offers a professional-grade solution for wood furniture assembly. Crafted from high hardness carbon steel, each insert features a hex socket drive for easy installation with the included 9mm drill bit and 6mm hex spanner. Designed to firmly lock into pre-drilled holes, these inserts prevent rotation and pull-out, ensuring durable, stable connections across hardwood, plywood, and fiberboard. Ideal for millennial professionals seeking reliable, efficient, and versatile fastening solutions in their DIY or furniture projects.

















| ASIN | B08JY5SXPB |
| Best Sellers Rank | #3,703 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #7 in Nut Inserts |
| Brand | PGMJ |
| Color | 1/4"-20 x15mm |
| Compatible Groove Diameter | 0.25 Inches |
| Customer Reviews | 4.7 4.7 out of 5 stars (2,531) |
| Exterior Finish | Copper |
| Fastener Type | Insert |
| Inside Thread Size | 0.315 inches (8mm) |
| Item Diameter | 10.5 Millimeters |
| Item Dimensions | 1 x 0.99 x 1 inches |
| Item Weight | 0.4 Kilograms |
| Manufacturer | PGMJ |
| Material Type | Metal |
| Metal Type | Iron |
| Model | 1/4"-20 |
| Number of Pieces | 80 |
| Part Number | 1/4"-20 |
| Screw Head Style | Hex |
| Size Name | Onesize |
| Thread Class | Coarse |
| Thread Coverage | Fully Threaded |
| Thread Size | 1/4"-20 |
| Thread Style | Left Hand |
| Thread Type | Unified National |
| Unit Count | 1.0 Ounce |
T**Y
Perfect for Wood Assembly – Easy to Install and Reliable! ⭐⭐⭐⭐⭐
I needed metal threaded studs to fasten wood together, and these 80 Pcs Wood Plugs for Screw Holes were exactly what I was looking for! The 1/4"-20 metal threaded studs are well-made and fit perfectly into the wood, providing a strong, reliable hold. The hex socket drive makes installation a breeze, and the nuts stay securely in place, ensuring the wood stays firmly together. This assortment of bolt fasteners is an excellent value, and it’s great to have such a well-organized kit for future projects. The pieces are durable and made of high-quality materials, making them ideal for any wood threading needs. ✅ Strong, reliable hold for wood assembly ✅ Easy installation with hex socket drive ✅ Great value with 80 pieces in the kit ✅ Durable, high-quality metal construction Highly recommend for anyone needing to securely fasten wood together!
D**E
Functional and Used A Few Already
Thread quality is on point. Sturdy and Durable. Price was amazing for the product and got it just in time.
R**N
They work
Made well, they work even better with a little bar soap rubbed lightly on the threads
S**N
Great value
I used these as part of the assembly of a standing desk project made from Acacia butcherblock countertop. The M6 threads are admittedly a little on the loose side, which you kind of want as it helps prevent galling of threads. You get a bunch of them, and I did not have any issues during install with the provided allen wrench. I used some wood glue as a lubricant during install, which will help keep these sturdy where they need to be. If they are load bearing, you'll want the extra security and will reduce the risk of these pulling out because you get a little heavy with your tightening. It comes with a supplied 9mm drill bit, which is worse than a used drill bit from Harbor Freight. If you're working on a project you really care about, or you're frequently installing these, absolutely get yourself a quality 9mm bit. The provided bit was slightly off square, and has a little bit of wobble. It's also duller than a butter knife - you will NOT want to use this bit in hard wood as I did. Most people that are going to buy these most likely have a full compliment of decent quality bits, albeit the 9mm size is kind of rare. Seriously get a good one.
S**D
Works great, as advertised
Works great, exactly as advertised. Would buy again.
J**K
Great for making furniture kits
I love working with these when making wood furniture that requires disassembly and reassembly. I made a loft bed for my grandson and this made it easy to disassemble, ship and reassemble. They are terrific.
D**S
Great quality. id recommend
worked exactly as they should, even take with the Allen and drill bit needed to make everything work. id recommend, they fit good and the thread quality was up to par. I used these for my go kart and mini bike seats. they look decent, cant complain.
N**W
Great quality inserts. Great value.
Excellent quality inserts. Hold firmly, even in particle board. Great value, and the included hex key and drill bit are an added bonus! Would definitely buy these again.
R**M
Price is a little bit high. The Quality is Good and precise.
R**J
It’s so easy in the kit
J**N
Fit as they should, well made and threads meet all the matching bolts I put in them. Quality product, particularly like the amount per box. I don't use them all at once but it's good to have some in stock in the shop after the job is done.
R**S
Great for securing table tops to legs, solid connection
M**Y
Perfect for my job. Come with a drill and allen wrench. Threads are clean and smooth. Worked great for me. Will be using more of these around the house.
Trustpilot
2 weeks ago
1 week ago