• 2D drawing of TAZ Tri-Lobe Tapping Inserts with a tri-lobe design for tapping into plastic.
  • 2D drawing of TAZ Tri-Lobe Tapping Inserts with a tri-lobe design for tapping into plastic.

TAZ Grooved Tapping Inserts Metric

Inserts Features

  • Coarse external threads and cutting flutes provide a reliable post-mold self-tapping installation in thermoplastics, thermoset plastics and resinous materials.
  • Ends of non-headed inserts are symmetrical to assist automatic feeding by eliminating the need for orientation during assembly.
  • Headed versions reduce the possibility of jack-out where there is a large clearance hole in the mating component, and are also well-suited for pull-thru applications.
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Loading Parts

Boss Dimensions

Insert ThreadL LengthBoss
M2 x
M2 x 0.44.803.503.10-3.301.255.30
M2.5 x 0.454.004.333.80-4.101.554.40
M2.5 x 0.455.254.333.80-4.101.555.80
M2.5 x 0.456.254.333.80-4.101.556.90
M3 x
M3 x
M3 x
M3.5 x
M3.5 x
M3.5 x 0.67.305.525.00-5.302.008.10
M4 x 0.75.606.315.80-6.102.306.20
M4 x
M4 x 0.78.406.315.80-6.102.309.30
M5 x 0.86.407.506.90-7.202.707.10
M5 x 0.88.407.506.90-7.202.709.30
M5 x 0.810.007.506.90-7.202.7011.0
M6 x 17.908.698.00-8.403.158.70
M6 x 19.808.698.00-8.403.1510.8
M6 x 112.008.698.00-8.403.1513.2
M8 x 1.257.5011.0610.1-
M8 x 1.259.5011.0610.1-10.64.0010.5
M8 x 1.2512.4011.0610.1-10.64.0013.7
M8 x 1.2514.0011.0610.1-10.64.0015.6
M10 x 1.512.0013.9513.0-13.55.1013.2
M10 x 1.516.0013.9513.0-13.55.1017.6


Screw inserts into boss holes following standard self-tapping fastener procedures using hand tools or automated screw driving equipment. Boss dimensions shown are for reference and may vary depending on the type of plastic and application. A counterbore is not required but may reduce plastic mold flash, edge chipping or installation alignment issues.