Product Features

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  • Accurate, easy access into hard-to-reach tapping locations
  • The smaller socket end OD permits the extension to pass through a standard liner bushing
  • Construction to close tolerances and carefully heat treated alloy steel for strength and durability
  • Each extension is designed for a specific tap size
  • The tap, supported by the close-fitting deep socket of the extension, is held firmly in position by two socket set screws bearing 90 deg apart on the square of the tap
  • Extensions are considerably less costly than special length taps and can be used again and again
  • 0.277 in tap square size
  • 0.367 in extension shank diameter