THROUGH TAPPED SELF-TAPPING INSERTS

Through-tapped self tapping inserts offer a hybrid of Metric OD inserts and blind self-tapping inserts. They are shouldered, undercut and have metric internal threads. However the main difference that makes these inserts stand out is the external threads are a 30 degree self-tapping form with a three notch cutting relief that work in a similar way as the blind self-tapping inserts. For non standard threaded inserts, please contact our manufacturing team for details.

Self Cutting Threaded Insert

Features

  • Internal & External Threads
  • Blind Inserts
  • Choice of M6 / M10 or M12 internal thread
  • Mild Steel
  • Stainless Steel 303
  • Marine Grade Stainless Steel 316

 

Insert Installation Guide

 

We've been asked by many of our customers for advice on the installation of our Blind & Through Tapped Self-Tapping Inserts into various applications such as wood, soft plastics, fibreglass and acrylics. Download our guide. Please note, all recommended hole sizes are entirely advisory and should be treated as such. This advice is intended as a guide rather than a definitive method of use as all applications are different. The use of these inserts depends on the host material and application. We always advise that you experiment a little first. Technifast are not responsible for any damage caused in the course of using our inserts.

 

 

 

Technical Specifications

M6 Internal Thread

  • 12mm external length
  • M6 x 8mm internal thread
  • 9.0mm external diameter
  • External thread 1.7mm pitch coarse self tapping to 7mm diameter
  • 3 interruptions in thread to assist insertion and help to remove parent material
  • Suggested clearance hole 7.0 – 8.5mm depending on material

M10 Internal Thread

  • 20mm external length
  • M10 x 14mm deep internal thread
  • 14mm External diameter
  • External thread 2.5mm pitch coarse self tapping to 11.5mm diameter.
  • 3 interruptions in thread to assist insertion and help to remove parent material
  • Suggested  clearance hole size from 11.5 to 13.5mm depending on material.

M12 Internal Thread

  • 25mm external length
  • M12 x 17mm internal thread
  • 16mm external diameter
  • External thread 2.5mm pitch coarse self tapping to 13mm diameter.
  • 3 interruptions in thread to assist insertion and help to remove parent material
  • Suggested clearance hole size 13 to15.5mm depending on material