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Sprite Science

1/4-20 Hex Drive Threaded Inserts for Wood - 40 Pieces

  • Based on 1,826 reviews
Condition: New
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Availability: In Stock.
Fulfilled by Amazon
Arrives Saturday, Jun 13
Order within 2 hours and 59 minutes
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Size: 1/4-20 x 15mm


Features

  • 1/4-20 threaded insert x 15mm length, 6mm allen wrench included, best 1/4"-20 threaded insert wood insert furniture screw in nut connector screws.
  • Insert head : 0.461" / 11.7mm, body : 0.315" / 8mm, threads : 0.410" / 10.4mm.
  • Threaded inserts are easy to install, simply drill the right size hole and Install with hex key provided.
  • In Softer wood, the outside threads cut easily into the wood, simply drill a Appropriately Sized Hole (8.5mm, 9mm, 9.5mm, 3/8" drill bit) for the body of the insert, then screw insert into the place.
  • In very Harder wood such as white oak or maple, drill a hole size (3/8", 9.5mm, 10mm drill bit) that close to the outside threads diameter, then screw insert into the place. If the drilled hole is too small for the threads, screwing it in MAY split the wood or insert.

Material: Carbon Steel


Fastener Type: Insert


Thread Size: 1/4"-20


Exterior Finish: Zinc


Color: White


Material: ‎Carbon Steel


Fastener Type: ‎Insert


Thread Size: ‎1/4"-20


Exterior Finish: ‎Zinc


Color: ‎White


Metal Type: ‎Carbon Steel


Finish Type: ‎Zinc plated carbon steel


Brand: ‎Sprite Science


Item Weight: ‎0.2 Kilograms


Thread Type: ‎Unified National Coarse (Unc)


Inside Thread Size: ‎0.410 INCH / 10.4MM


Thread Style: ‎Right Hand


Thread Class: ‎Class 2A


Size: ‎1/4-20 x 15mm


Item Diameter: ‎0.25 Inches


Number of Pieces: ‎40


Set Name: ‎40 pieces


Manufacturer: ‎Sprite Science


Part Number: ‎1/4-20WOODINSERT


Item Weight: ‎7 ounces


Item model number: ‎1/4-20WOODINSERT


Finish: ‎Zinc plated carbon steel


Shape: ‎Round


Installation Method: ‎Screw-In


Item Package Quantity: ‎1


Head Style: ‎Flat


Cutting Diameter: ‎0.25 Inches


Measurement System: ‎Inch, Metric


Usage: ‎Wood, Furniture


Batteries Included?: ‎No


Batteries Required?: ‎No


Date First Available: April 6, 2019


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Saturday, Jun 13

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews

    • They Worked Equal to or Better than Expected
Size: 1/4-20 x 15mm
Great product. Worked as they should. As a note, as I was setting these units in aged, very hard, dense hickory I was concerned about stripping the hex head. Especially as I was concerned about the treads pulling out of the wood so I drilled the pilot hole for soft wood. To help reduce friction, I applied some bar soap to the external threads prior to threading them into the wood. The inserts went in easily and I had no issues with stripping the hex heads. ... show more
Reviewed in the United States on February 20, 2024 by Fallswine
    • Wasn’t use
Good instructions they work well
Reviewed in the United States on October 9, 2024 by Victor
    • Good price, quality inserts.
Size: 1/4-20 x 20mm
Used these when making a kid’s bed. These inserts work fantastic. Had no problem with them; just make sure you drill the correct size pilot hole.
Reviewed in the United States on May 10, 2024 by JAmidon
    • Well made and easy to install
Size: 1/4-20 x 10/15/20mm*150pcs
I used three 1-3/4 x 4" wide red oak cleats on the bottom side of my 2" thick oak work bench top instead of c-channel to help keep the top flat. I slotted the holes in the cleats to allow for wood expansion. I attached the cleats to the underside of the top using these 1 inch (20mm) long steel threaded inserts. I used about 25 inserts for this project. I drilled the 3/8" pilot holes using a shop made drill guide and a veritas 3/8" brad point drill bit. After drilling, I chamfered the holes with a counter sink. I drove the inserts in with a harbor freight T-handle allen driver. The inserts went in fairly tight but did not feel like they were too tight. They all drove in with out damage to the inserts or the driver. The 1/4-20 bolts used to secure the cleats fit nicely without any problems. I was able to remove a few inserts and reuse them in a different location with no problems. Best inserts I've ever used. Highly recommed. ... show more
Reviewed in the United States on September 8, 2022 by J. Bennett
    • Gets the job done.
Size: 1/4-20 x 15mm
See title.
Reviewed in the United States on November 4, 2024 by BadBoyBob
    • Good Quality
Size: 1/4-20 x 20mm
Well made for use in my projects.
Reviewed in the United States on October 11, 2024 by ccvichy
    • Easy to install; great directions
Size: 5/16-18 x 15mm
Review Image by F. Kerby F. Kerby
Review Image by F. Kerby F. Kerby
Review Image by F. Kerby F. Kerby
I wanted to install these to attach some locking swivel casters on the base for my router table. The directions provided were very helpful. I ended up assembling an installation and removal tool. The coupling nut opposite the threaded insert is installed loosely in the drill press chuck. By "loosely" I mean that the chuck jaws hold the nut in alignment but the nut is loose enough to slip. The insert is installed by tightening the nut next to the insert. If the hole for the insert is the correct size (tight, but not TOO tight). the installation tool can be remove by loosening the nut closest to the insert. If the hole isn't snug enough, the tool can be removed by holding the shaft and using a wrench to remove the lower nut. These inserts worked great. They were just what I needed to get a great looking caster installation. ... show more
Reviewed in the United States on February 24, 2023 by F. Kerby F. Kerby
    • Threaded inserts
Size: 1/4-20 x 20mm
These inserts are just the right size to hold most wood projects. They hold even in soft pine, now that is a thing I have been looking for. No more gluing inserts in place, with the teeth these have they grip to stay.
Reviewed in the United States on September 12, 2024 by Nick

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