191-Piece Threaded Insert Kit for Wood, 10 Sizes by Hapric

191-Piece Threaded Insert Kit for Wood, 10 Sizes, view 2

191-Piece Threaded Insert Kit for Wood, 10 Sizes, view 3

191-Piece Threaded Insert Kit for Wood, 10 Sizes, view 4

Threaded Inserts

191-Piece Threaded Insert Kit for Wood, 10 Sizes

$18.99$20.98save 9%

★★★★☆ 4.4 out of 5 · 192 ratings

Three threads, ten sizes, one case: 120 inserts in 1/4-20, 48 in 5/16-18 and 20 in 3/8-16, each in two to four lengths. We plate them white zinc, knurl the outside and keep the inside thread smooth so a bolt runs in by hand. Three hex wrenches ride in the lid.

1/4-20 x 10/15/20/25 mm (120), 5/16-18 x 13/15/20/25 mm (48), 3/8-16 x 20/25 mm (20)
White zinc plated carbon steel, rust resistant indoors and out
3 hex wrenches included
Compartments labeled inside and out; lid foam keeps sizes apart

Shop 191-Piece Threaded Insert Kit for Wood, 10 Sizes

Price and stock are shown on the partner store page that opens from the button.

Specifications
Material	White zinc plated carbon steel
Pieces	191
Threads	1/4-20, 5/16-18, 3/8-16 (10 sizes)
Included	3 hex wrenches, labeled case

Reaches for it

Workbenches and tablesFurniture repairJigs and fixtures

What is in the case

Kit contents by size
1/4-20 × 10 mm	30
1/4-20 × 15 mm	45
1/4-20 × 20 mm	35
1/4-20 × 25 mm	10
5/16-18 × 13 mm	15
5/16-18 × 15 mm	15
5/16-18 × 20 mm	10
5/16-18 × 25 mm	8
3/8-16 × 20 mm	10
3/8-16 × 25 mm	10
Hex wrenches M6 / M8 / M10	3

Labeled inside and on the lid, thick fixed dividers, threads cut to the metric standard. Returns and replacements run through the order page of the partner store.

From the case

What buyers wrote about this kit

★★★★★

I’m genuinely impressed.

I recently purchased the 191 PCS Threaded Inserts for Wood, and I’m honestly impressed! The quality of the inserts is outstanding—they’re well-machined, consistent in size, and made from durable materials that feel built to last. Installation was simple and straightforward, and every insert threaded smoothly without stripping or splitting the wood. Once installed, they hold firmly and provide a strong, reliable connection. The kit includes a great variety of sizes, making it versatile for multiple woodworking projects. Overall, the performance exceeded my expectations, especially at this price. This is an excellent value for anyone looking for a dependable, well-made set of threaded inserts for woodworking, repairs, furniture assembly, or general DIY projects.

Angel Reyes · November 29, 2025

★★★★☆

Great selection of lengths, and superb quality.

These are incredibly handy, and find myself using them all the time for many different projects that call for having a variety of threaded insert lengths, depending on the size and type of materials I am using in their construction. My only critique is that I wish less standard thread sizes were available to purchase or were included. This is only a minor thing, though, and otherwise these work very well, and the wrenches included are heavy duty and sturdy.

Ben D · April 26, 2026

At the counter