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Easy E-Z ™ Knife Insert Installation

E-Z Knife™ inserts are designed for use in hard woods, like oak, cherry, and maple. E-Z Knife™ inserts are ideal for use wherever assembly or disassembly could lead to thread erosion or stripping. Also, E-Z Knife™ inserts for wood use a proprietary external “knife” thread to slice into the wood, which provides superior holding power.

E-Z Knife™ inserts are most often machined out of brass when internal thread sizes range from #4 to 3/8 or M3 to M8.

For additional corrosion resistance, stainless steel knife thread inserts are used with 8-32, 10-24, and 1/4-20 internal threads.


  • • Superior hard wood holding power
  • • Sizing variety, inch (coarse/fine) & metric
  • • Brass or stainless steel options
  • • Easily installs with a screwdriver, bolt/jam nut, or optional drive tool

Ideal for:

  • • Furniture (Brass)
  • • Cabinetry (Brass)
  • • Partitions (Brass)
  • • Beer Tap Handles
  • • Shipping Containers (Brass or Stainless Steel)
  • • Marine Applications (Stainless Steel)
  • • Outdoor Furniture (Brass or Stainless)
  • • Storm Shutters (Brass or Stainless)

Important Notes:
• For particularly hard wood – or if there is difficulty getting the hard wood insert to thread-in straight – a drive tool can be made with full thread engagement for maximum control during installation.
• Hard wood insert hole size requirements may vary depending on a variety of factors, including material and tools. We recommend that you test your application before ordering. We will gladly supply free hard wood insert samples.

E-Z LOK™ has additional brass inserts for other applications:

E-Z Knife™ Insert for Hard Wood

E-Z Knife™ Insert (Stainless Steel)

Mechanical Testing
Dimensional Drawings

E-Z Knife™ Insert for Hard Wood - Kits

E-Z Knife™ Kits

Available In:

  • Range of I.D. Thread Sizes
  • Inch or Metric Threads

Kit includes:

  • 10 single-size inserts
  • Matching size drill bit
  • Special Drive Tool

E-Z Knife™ Insert for Hard Wood - Driver Tools

E-Z Knife™ Drive Tool

A standard hex shaft allows for the use of power drills or drill presses in higher volume installations. Both styles quickly drive in the inserts without time consuming thread engagement.