E-z Lok 400-M3 Brass Knife Insert M3x0.5 10-pack

Product Description

The E-Z LOK 400-M3 is a brass knife-style threaded insert designed to create durable M3x0.5 internal threads in wood, particle board, and other soft substrates. Knife inserts use serrated outer flanges that cut into the base material as the insert is driven in, creating a secure mechanical anchor without the need for adhesives. The overall length is 0.375 inches, the outer insert diameter is 0.35 inches, and the minimum grip thickness required is 0.5 inches. This package contains 10 inserts. Installation is performed by woodworkers, cabinet makers, furniture manufacturers, and general contractors working with wood-based assemblies.

Knife inserts like the 400-M3 are used in residential and light commercial woodworking applications where a removable, load-bearing threaded connection is needed in wood or composite panels. Common scenarios include flat-pack furniture assembly, equipment enclosures with wood frames, jig construction, and fixture fabrication. The M3 hex drive allows installation with a standard M3 hex key. A 0.25-inch drill bit and a 0.25-inch hole diameter are required for proper seating.

Key Features

• M3x0.5 internal thread provides a strong, reusable fastening point in wood substrates
• Knife-style serrated outer body cuts into material during installation - no adhesive required
• Brass construction resists corrosion and provides good thread wear resistance
• 0.375-inch overall length suits thin-panel applications with a 0.5-inch minimum grip requirement
• M3 hex drive for controlled, tool-driven installation
• Packaged in quantities of 10 per package

Compatibility

Designed for installation into wood, particle board, and similar soft materials requiring an M3x0.5 threaded insert. Requires a 0.25-inch pilot hole.

Installation Notes

Installation is typically performed by woodworkers or assembly technicians using a standard hex key or hex driver bit. Drill a 0.25-inch pilot hole to the appropriate depth before driving the insert. Do not over-drive the insert past flush, as this can strip the surrounding material and reduce pull-out strength. Ensure the base material is at least 0.5 inches thick to meet the minimum grip requirement.