Roll Pin or Shear pin

[Michael QLD OZ]

I recently made up a PHD from an old diff, but was advised to put in a number 5 or weaker Shearpin, to protect my PTO shaft. When I got to town and asked about a shearpin the desk jockey said he did not sell them only Roll Pins. Are they the same thing?

 

[Anonymous-0]

Shear pin are usually brass and made to break, roll pin are made from spring steel and are press fit in to a hole where it might vibrate out or to hold a shaft latirurally.

 

[Jack in NB]

Soft iron bolts (grade 2), or cold rolled rod will work. Probably 5/16 for that application.

One rotary mower we had used 3" or so pieces of 3/8 rod. (They were about a buck a piece from the MF dealer, until we woke up....!)

They were driven into the hole on the u-joint yoke through the round drive shaft and the ends tapped to a bit of mushroom to keep them in place.

 

[Michael QLD OZ]

Great at least I now know there is a difference, the grade 2 bolt may be the easiest to find I will let you know how I get on.

 

[Bob (Aust)]

[b:c9d1e50f52]Mike[/b:c9d1e50f52]. Checked the local bolt and nut place here in Roma and they stock both, so can't be too hard to find?