1/4"-20 Internal Hex Drive Threaded Inserts for Wood - 50 Pieces

Key features

• High-Strength Carbon Steel: Made from premium zinc-plated carbon steel for superior hardness, wear resistance, and corrosion protection, ensuring long-lasting durability for woodworking and furniture applications
• 1/4"-20 UNC Coarse Thread: Features standard 1/4"-20 UNC coarse internal threads providing a secure, tight hold for furniture screws and woodworking bolts; not compatible with metric M6 screws
• Includes a 8.5mm twist drill bit and 6mm hex spanner for easy and accurate installation. Pre-drill a slightly deeper pilot hole, then screw the insert in place for a firm and stable hold — works well even on hardwood or dense materials
• Suitable for furniture repair, cabinetry, tables, chairs, wooden crafts, and woodworking DIY projects; compatible with hardwood, plywood, and composite boards
• Includes 50 threaded inserts, 1 twist drill, and 1 hex spanner, offering good value and convenience for both professionals and DIY users

SGTBQLL 50 PCS 1/4"-20 x 20mm Threaded Inserts for Wood are designed to create strong, reusable threads in wood for furniture assembly, repair, and woodworking projects. Each insert is made of zinc-plated carbon steel for hardness, wear resistance, and corrosion protection, offering stable joints even after repeated tightening. Specifications Thread type: 1/4"-20 UNC coarse internal thread Total length: 20 mm; external diameter: 10.5 mm Drive type: internal hex Included tools: 8.5 mm twist drill bit and 6 mm hex spanner Compatibility Fits 1/4"-20 (inch-based) fasteners; not compatible with metric M6 screws Usable with hardwood, plywood, MDF, and composite boards Installation Tips Pre-drill a pilot hole slightly deeper than the mating screw (1–2 mm extra depth) Keep the insert vertical and tighten using the included hex spanner For dense hardwood, slightly enlarge the pilot hole; for softer boards, a small amount of wood glue may be used to increase holding strength Applications Furniture repair and assembly Cabinetry, tables, chairs, and wooden crafts DIY woodworking and restoring stripped holes Package Contents 50 × 1/4"-20 × 20 mm threaded inserts 1 × 8.5 mm twist drill bit 1 × 6

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