Post Hole Auger Head Attach - Hyd (8-30'')

For post hole digging, you must consider the support of your post. The most common support is a cement base, whose size depends on the post and whether it has a steel plate base or not.

A general rule for post hole digging is to have 1 inch of cement around the post to repack the dirt. Generally doubling the auger size x 2 , ie. 6" Post = 12" hole, 8" Post = 14" hole etc.For round post you want to go 2-4 " bigger to give you proper support,  Additionally, it is better to dig wider than needed for post hole digging in case you need to realign.

Our recommendations for post hole digging are as follows:

• For a 1 7/8" Steel Post, use a 6" auger.
• For a 2 3/8" Steel Post, use a 6" auger.
• For a 4" x 4" Wood Post SQUARE, use an 8" auger.
• For a 4" x 4" Wood Post SQUARE, use an 8" auger.
• For a 6" x 6" Wood Post SQUARE, use a 12" or larger auger.
• For a 8" x 8" Wood Post SQUARE, use a 14" or larger auger 
• FOR ROUND POST 
• For a 4" Wood Post ROUND, use 8" auger 
• For a 6" Wood Post ROUND, use 10" auger or larger 
• For a 8" Wood Post ROUND, use 12" auger or larger