Taper pin

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For body piercing, see Taper insertion pin.
An example of tapered pin application.

A tapered pin is a fastener used in mechanical engineering. They are steel rods with one end having a slightly larger diameter than the other. Standard inch-sized tapered pins have a taper on diameter of 1:48[1] while metric ones have a taper of 1:50.[2] A 1:48 taper means that one end of a 4-foot-long bar (48 inches) will be 1 inch smaller in diameter than the other end, or a 1/4-inch taper over a 1-foot length.


Some tapered pins have a male screw thread on the small end that holds the pin in place with a washer and a nut. Other pins are threaded on both ends, on the thick end to pull the pin out with the same nut that holds the pin in place.


[3]

Taper pin reamers are designed to prepare the hole for taper pins.

Metric taper reamers are designated by the small diameter. Example: a 2mm taper pin reamer has a 1.9mm small end ( 2mm nominal size ) and a 2.86mm large end.



References[edit]

  1. ^ Machinery's Handbook
  2. ^ Newnes Mechanical Engineer's Pocket Book
  3. ^ Newman Tools Inc., metric taper pin reamers