Product: 50 Pieces 1/4-20 Threaded Inserts for Wood Nutsert Furniture Screw-in Nut 15mm Length Hex Drive
Brand: Sprite Science
1/4-20 wood Threaded Inserts are inserted nuts that go into a predrilled hole in the wood and have internal threads. 
 
 These wood insert nuts feature threaded designs, external protrusions bite into the wood, providing superior holding power and preventing the insert nuts from either turning or pulling out in all applications. 
 
 Our inserts work great with soft woods and hard woods. 
 
 Threaded Insert Length: 0.591" / 15.0mm. 
 Threaded Insert Body diameter: 0.315" / 8mm. 
 Threads diameter: 0.410" / 10.4mm 
 
 Recommended Drill Bit for Soft Wood: 8.5mm Bit, If Small, Try 9mm Bit - 9.5mm / 3/8" bit. 
Recommended Drill Bit for Hard Wood: 9.5mm / 3/8" Bit, If Small, Try 10mm Bit. 
Drilling Advice is Guidance only, as best practice varies between your applications, please choose the proper drill bit according to the hardness of your wood material.
1/4-20 threaded inserts for woodworking applications, 15mm length, hex drive Allen key included.
Threaded inserts are easy to install, simply drill the appropriately sized hole and Install the inserts with the hex key provided or other optional drive tools you have.
1/4-20 threaded inserts are the ideal solution for softwood, hardwood, plywood, MDF, and composition board.
Threaded inserts head diameter: 0.461" / 11.7mm, body diameter: 0.315" / 8mm, threads diameter: 0.410" / 10.4mm.
In Softwood, recommended drill bits for these threaded inserts are 8.5mm, 9mm, 9.5mm / 3/8". In hardwood such as white oak or maple, recommended drill bits are 9.5mm, 3/8 inch, or 10mm.

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