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1/4-20, 5/16-18, 3/8-16 Threaded Inserts, Wood Inserts, Steel Threaded Inserts for Wood Furniture Screw, HELIFOUNER 148 Pieces 1/4'-20, 5/16'-18, 3/8'-16 Threaded Inserts Kit with Hex Wrench

Free shipping on orders over $29.99

$16.99

$ 6 .99 $6.99

In Stock

About this item

  • 【Detailed Dimensions】1/4"-20 x 10mm/15mm/20mm/25mm, 5/16"-18 x 13mm/15mm/20mm/25mm, 3/8"-16 x 20mm/25mm, 10 sizes commonly used threaded inserts in a plastic case, different sizes can satisfy your different needs, coarse thread, fit standard 1/4 20 screws bolts, 5/16 18 screws bolts and 3/8 16 perfectly.
  • 【Blue Zinc Plated Steel】Made of high quality carbon steel, blue zinc plated on the surface which have good corrosion resistance in bad environment like high temperature, high hardness and perfect wear resistance, standard internal hex socket, without burr, smooth, non-slip, which can ensure long time using.
  • 【Easy To Install】You can drill a hole by using a 9.5mm /12mm /15mm drill bit, ensure a precise 90 degree angle for inserting the threaded inserts, then you need to screw the inserts into the 9.5mm /12mm /15mm holes by using our hex wrench. Make sure you countersink the hole to head size before you insert the threaded sleeve, fit standard 1/4 20, 5/16 18, 3/8 16 screws bolts perfectly.
  • 【Threaded Inserts Assortment Kit】Total 148 pieces 10 sizes threaded inserts are packed in a durable transparent box with label for you. It is easy to distinguish the size of the product, you can choose the suitable one to use in your wood furniture. Our threaded inserts have standard internal hex socket, without burr, smooth, non-slip.
  • 【Wide Applications】You can use our threaded inserts to repair file cabinets and chair leg, you can also use them on head board and foot board of wood furniture. Widely used for soft woods of pine, plywood, fiberboard, etc, work perfectly on the furniture combination, you just need to drill a hole that the size of the body into the wood for the threaded inserts.



【Specifications:】
- Package Quantity: 148 Pieces
- Color: Blue zinc, as picture show
- Thread Type: 1/4"-20, 5/16"-18, 3/8"-16
- Material: High Quality Zinc Plated Carbon Steel
- Fit for standard 1/4 20, 5/16 18, 3/8 16 screws bolts
- Type: 1/4 20, 5/16-18, 3/8 16 Wood Threaded Inserts
- Sizes: 1/4"-20 x 10mm/15mm/20mm/25mm, 5/16"-18 x 13mm/15mm/20mm/25mm, 3/8"-16 x 20mm/25mm

【Features:】
- Material: Made of high quality carbon steel, blue zinc plated on the surface which have good corrosion resistance in bad environment like high temperature, high hardness and perfect wear resistance, standard internal hex socket, without burr, smooth, non-slip, which can ensure long time using.
- Easy to install, HELIFOUNER threaded Inserts are best for composite materials, soft wood, plywood and hardwood, you can drill a hole by using a 9.5mm /12mm /15mm drill bit, ensure a precise 90 degree angle for inserting the threaded inserts, then you need to screw the inserts into the 9.5mm /12mm /15mm holes by using our hex wrench.
- Total 148 pieces 10 sizes threaded inserts are packed in a durable transparent box with label for you. It is easy to distinguish the size of the product, you can choose the suitable one to use in your wood furniture, widely used for all kinds of composite materials, soft wood, plywood and hardwood.

【Package Included:】
1/4"-20 x 10 mm --------35 Pieces
1/4"-20 x 15 mm --------20 Pieces
1/4"-20 x 20 mm --------15 Pieces
1/4"-20 x 25 mm --------10 Pieces
5/16"-18 x 13 mm -------15 Pieces
5/16"-18 x 15 mm -------15 Pieces
5/16"-18 x 20 mm -------10 Pieces
5/16"-18 x 25 mm --------8 Pieces
3/8"-16 x 20 mm --------10 Pieces
3/8"-16 x 25 mm --------10 Pieces
6mm Hex Wrench --------1 Pieces
8mm Hex Wrench --------1 Pieces
9.5mm Hex Wrench ------1 Pieces

【Total Quantity: 148 Pieces】


Dev
Reviewed in the United States on January 20, 2025
Quality item. Good selection and a fair price. Easy to install
Customer
Reviewed in the United States on September 2, 2024
Good buy
Jim2
Reviewed in the United States on July 22, 2024
Easy to insert.Does just what I need.
Steve
Reviewed in the United States on March 15, 2024
These are well made and I was pleasantly surprised by their pull-out strength
JLC2
Reviewed in the United States on February 15, 2024
Took one of the inserts of the size that I think will work on the project. Drilled appropriate size holes in hardwood and softwood and using the allen wrench put the insert in each hole in turn. The inserts went in without drama and appeared to be doing the job.
moises carbajal
Reviewed in the United States on September 2, 2023
The hole size suggested is too too big. 1/2 is a bit small. I would try a 14mm drill bit if I had one. I ended up using an old 5/8 flat kind hole bit but trimmed the width by 1/16 th approx. Then I put in a bolt and slammed it into the wood using a 3/8 impact wrench. Try the modified bit on a piece of scrap wood untill you get it right before drilling on actual project.
AAG
Reviewed in the United Kingdom on August 3, 2023
Product seems ok, BUT, DO NOT drill the 15mm hole instructed in the details on the Amazon web site as that is the CLEARANCE dimension. I followed the instruction and suddenly realised this was the clearance dimension. Sadly, piece I was constructing is now useless as the hole is too big for these screw in type inserts!! :(
Scott Weimer
Reviewed in the United States on August 25, 2023
Normally I have no complaints. I use 1/4-20, and 5/16-18 all the time for wood turning. I purchased some bottle openers that are 3/8-16 thread...so I ordered this kit. The "3/8-16" are more like 1/2 inserts. I could slide the shank of the bottle opener right through it. Then I thought, maybe the bottle opener thread was incorrect, but it sure looked like 3/8. So I gander down to lowes and pick up a 3/8-16 zinc insert, and what do you know, it threaded right on tight as can be.
Mrchuck2000
Reviewed in the United States on July 6, 2023
Decent quality, good price. Brass ones would look nicer, but these will be fine. Hex wrench (for installation) was included.