--- product_id: 777049307 title: "Threaded Insert for Wood 1/4-20 x 10mm 15mm 20mm Screw in Wood Insert Nut Kit 150 Pieces" brand: "sprite science" price: "£70.54" currency: GBP in_stock: false reviews_count: 5 category: "Sprite Science" url: https://www.desertcart.co.uk/products/777049307-threaded-insert-for-wood-1-4-20-x-10mm-15mm store_origin: GB region: United Kingdom --- # 1/4-20 unified thread size 150-piece complete kit Fits soft & hard wood Threaded Insert for Wood 1/4-20 x 10mm 15mm 20mm Screw in Wood Insert Nut Kit 150 Pieces **Brand:** sprite science **Price:** £70.54 **Availability:** ❌ Out of Stock ## Summary > 🔧 Screw in Strength, Screw out Doubt — Upgrade Your Woodwork Game! ## Quick Answers - **What is this?** Threaded Insert for Wood 1/4-20 x 10mm 15mm 20mm Screw in Wood Insert Nut Kit 150 Pieces by sprite science - **How much does it cost?** £70.54 with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/777049307-threaded-insert-for-wood-1-4-20-x-10mm-15mm) ## Best For - sprite science enthusiasts ## Why This Product - Trusted sprite science brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Optimized for All Woods:** Designed to securely anchor in both softwoods and hardwoods without splitting or damage. - • **Versatile Length Options:** Includes 10mm, 15mm, and 20mm inserts to perfectly match your furniture and woodworking needs. - • **Complete Installation Kit:** Comes with 150 inserts plus a 6mm hex key for effortless, professional-grade installation. - • **Durable Alloy Steel Build:** Crafted from premium alloy steel for long-lasting strength and corrosion resistance. - • **Precision 1/4-20 Threading:** Engineered for seamless compatibility with standard screws, ensuring a rock-solid hold every time. ## Overview This 150-piece Threaded Insert Nut Kit features 1/4-20 unified threads in three lengths (10mm, 15mm, 20mm) made from durable alloy steel. Designed for easy screw-in installation with the included hex key, these inserts provide a permanent, strong internal thread for both soft and hard wood applications, making them ideal for furniture assembly and woodworking projects. ## Description Pack of 150 Threaded Insert for Wood Nutsert Screw in Nut Insert for Furniture 1/4-20 x 10mm 15mm 20mm Hex Drive Threaded Insert with 1/4-20 Internal Thread Size, the hexagon drive allows for easy installation. 1/4"-20 Threaded Inserts are Ideal for use in composite materials, hard and soft wood. 44 pieces 1/4 in. - 20 tpi x 20 mm threaded inserts 44 pieces 1/4 in. - 20 tpi x 15 mm threaded inserts 62 pieces 1/4 in. - 20 tpi x 10 mm threaded inserts 1 piece 6mm hex key for 1/4-20 threaded inserts. INSTALLATION: SOFT WOOD: When use this 1/4-20 threaded inserts in softer woods and plywood, inserts outside threads cut easily into the wood, so simply drill a hole sized for the body of the insert, and screw it into place. Recommended drilling hole size for Soft Wood: 8.5mm, 9mm, 3/8 inch.(Please choose the proper drill bit according to the hardness of your material) PLEASE NOTE: Thread Diameter for 1/4-20 x 15mm / 20mm is 0.410" / 10.4mm. PLEASE NOTE: Thread Diameter for 1/4-20 x 10mm is 0.389" / 9.9mm. HARD WOOD: (Be careful with hard materials) When use this 1/4-20 threaded inserts in hard woods such as white oak and maple, drill a hole sized that close to the outside threads diameter. If the drilled hole is too small for the threads, screwing it in MAY split the wood or the insert nut. Recommended drilling hole size for Hard Wood: 3/8 inch ,10mm [10mm sized hole is not for 1/4-20 x 10mm threaded insert as the out thread diameter is only 9.9mm] Please choose the proper drill bit according to the hardness of your material Please note that installation advice is guidance only, as best practice varies between your applications. Review: TOP Compatible avec les vis à dégagement rapide Review: ウッドデッキ材のハードウッド、イペに10mmのドリルで深さ15mm、C2くらいで面取りをしてから打ちました。しっかりしています。 六角レンチも付いていますが、少し短く、お手持ちのものを使うことをオススメします。（普通に使えますが） かなり硬い木でもしっかりと固定でき、ちゃんと使えました。 なくなったらリピします。 ## Features - 1/4-20 Threaded Insert Wood Insert Nuts Furniture Screw in Nut kit 151 pieces. - 44 pieces 1/4 in. - 20 tpi x 20 mm threaded inserts + 44 pieces 1/4 in. - 20 tpi x 15 mm threaded inserts + 62 pieces 1/4 in. - 20 tpi x 10 mm threaded inserts + 1 piece 6mm hex key. - Threaded insert head diameter: 0.461" / 11.7mm, body diameter: 0.315" / 8mm, threads diameter of 1/4-20 x 20mm / 15mm: 0.410" / 10.4mm, threads diameter of 1/4-20 x 10mm: 0.389" / 9.9mm. - 1/4-20 Insert nut goes into a predrilled hole in wood and has internal threads, the Screw-In insert offers a strong permanent thread for wood. - Threaded insert features durable construction for a long-lasting hold, ideal to use in furniture applications. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B082Y6QBKG | | Brand | Sprite Science | | Colour | Silver | | Country of Origin | USA | | Exterior Finish | Uncoated/Polished | | Fastener Type | Insert | | Finish Type | Unfinished | | Inside Thread Size | #4-20 | | Item Diameter | 0.41 Inches | | Item Weight | 721 g | | Item model number | 150-THREADEDNUT | | Manufacturer | Sprite Science | | Material | wood | | Metal Type | Alloy Steel | | Number of Pieces | 151 | | Size | 1/4-20 x 10/15/20mm*150pcs | | Thread Class | Unified National | | Thread Coverage | Fully Threaded | | Thread Size | 1/4 to 20 | | Thread Style | Right Hand | | Thread Type | Unified National | ## Product Details - **Brand:** Sprite Science - **Colour:** Silver - **Exterior Finish:** Uncoated/Polished - **Fastener Type:** Insert - **Finish Type:** Unfinished - **Inside Thread Size:** #4-20 - **Material:** wood - **Metal Type:** Alloy Steel - **Thread Size:** 1/4 to 20 - **Thread Type:** Unified National ## Images ![Threaded Insert for Wood 1/4-20 x 10mm 15mm 20mm Screw in Wood Insert Nut Kit 150 Pieces - Image 1](https://m.media-amazon.com/images/I/514KAQ91qRL.jpg) ![Threaded Insert for Wood 1/4-20 x 10mm 15mm 20mm Screw in Wood Insert Nut Kit 150 Pieces - Image 2](https://m.media-amazon.com/images/I/514PBF7uzxL.jpg) ![Threaded Insert for Wood 1/4-20 x 10mm 15mm 20mm Screw in Wood Insert Nut Kit 150 Pieces - Image 3](https://m.media-amazon.com/images/I/51VFGKy-3xL.jpg) ![Threaded Insert for Wood 1/4-20 x 10mm 15mm 20mm Screw in Wood Insert Nut Kit 150 Pieces - Image 4](https://m.media-amazon.com/images/I/51XoCZiBT5L.jpg) ![Threaded Insert for Wood 1/4-20 x 10mm 15mm 20mm Screw in Wood Insert Nut Kit 150 Pieces - Image 5](https://m.media-amazon.com/images/I/51bbPMT3DvL.jpg) ## Available Options This product comes in different **Size** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Review *by C***N on 15 December 2025* TOP Compatible avec les vis à dégagement rapide ### ⭐⭐⭐⭐⭐ Review *by し***う on 29 November 2025* ウッドデッキ材のハードウッド、イペに10mmのドリルで深さ15mm、C2くらいで面取りをしてから打ちました。しっかりしています。 六角レンチも付いていますが、少し短く、お手持ちのものを使うことをオススメします。（普通に使えますが） かなり硬い木でもしっかりと固定でき、ちゃんと使えました。 なくなったらリピします。 ### ⭐⭐⭐⭐⭐ Review *by M***B on 8 May 2025* I used these when building a crib. They go in easy and look great. I was impressed by the quality and the attention to detail the sellers had. The bag had all the size information and drilling requirements. I used 24 of them and they each performed well. They even included an allen wrench. I have plenty of them, but it is nice to keep everything in the same spot. Now when I store them and use them later, the directions and the allen wrench will be in the same bag. Great job, this is how buying hardware should be. --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.co.uk/products/777049307-threaded-insert-for-wood-1-4-20-x-10mm-15mm](https://www.desertcart.co.uk/products/777049307-threaded-insert-for-wood-1-4-20-x-10mm-15mm) --- *Product available on Desertcart United Kingdom* *Store origin: GB* *Last updated: 2026-05-26*