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🔩 Screw in confidence, build with precision — your woodwork’s secret weapon!
This pack of 40 high-grade carbon steel 1/4-20 UNC threaded inserts offers a robust, zinc-plated finish designed for easy installation into both soft and hardwoods. With a 15mm length and included 6mm hex wrench, these inserts provide superior holding power and prevent pull-out or rotation, making them ideal for furniture assembly and wood projects requiring durable, professional-grade fastening solutions.





| ASIN | B07QGMCNS8 |
| Best Sellers Rank | #10,808 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #13 in Nut Inserts |
| Brand | Sprite Science |
| Color | White |
| Compatible Groove Diameter | 10.4 millimeters |
| Customer Reviews | 4.7 4.7 out of 5 stars (2,015) |
| Drive Style | External Hex |
| Exterior Finish | Zinc |
| Fastener Type | Insert |
| Finish Types | Zinc plated carbon steel |
| Grade Rating | industrial |
| Inside Thread Size | 0.410 INCH / 10.4MM |
| Item Diameter | 0.25 inches |
| Item Weight | 0.2 kg |
| Manufacturer | Sprite Science |
| Material Type | Carbon Steel |
| Metal Type | Carbon Steel |
| Model | 1/4-20WOODINSERT |
| Number Of Items | 40 |
| Number of Pieces | 40 |
| Outside Diameter | 11.7 millimeters |
| Part Number | 1/4-20WOODINSERT |
| Screw Head Style | Hex |
| Set Name | 40 pieces |
| Size Name | 1/4-20 x 15mm*40pcs |
| Thread Class | Class 2A |
| Thread Size | 1/4"-20 |
| Thread Style | Right Hand |
| Thread Type | Unified National Coarse (Unc) |
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