Accessory Fit · Buyer’s Guide
Jackhammer Bits And Chipping Hammer Chisels: How To Match The Shank
Match the connection first. Then choose the working end, length and part number.
Ordering a replacement point or chisel often starts with a familiar-looking photograph. Before choosing the working end, spend a little time on the part that fits into the hammer. That is where the shank dimensions, collar and retainer need to agree.
Have your tool model, an existing accessory and any readable part numbers nearby. The steps below explain what to record so you can use the illustrated charts and size tables with confidence.
The Short Answer
A matching blade width is not enough. Identify the exact hammer configuration, match the shank shape and dimensions, then confirm the collar and retainer. Choose the working end after the connection is verified.
Identify Your Hammer And Its Configuration
Record the brand, complete model designation and chuck option. A family name can cover several sizes or configurations. Use the tool’s identification plate and matching parts drawing where available.
For a replacement order, keep the old accessory part number with your notes. If the number is unreadable, photograph the complete accessory and its connection beside a measuring scale. Include the hammer’s retainer in a separate photo.
Read Every Dimension In The Shank Size
A label such as 1-1/8 inches by 6 inches describes two dimensions of the connection, not the blade width or overall tool length. A 1-1/4-inch by 6-inch shank is a different size even though the second dimension matches.
Our clay-digger and paving-breaker charts show 7/8 by 3-1/4, 1 by 4-1/4, 1-1/8 by 6, and 1-1/4 by 6 inches. Use the dimensioned drawing for the exact connection you are comparing. These are catalog options, not a claim that every hammer accepts all four.
Oval Collar Or Full Round Collar?
For the solid and ball retainer options in our chipping-hammer charts, use oval-collar steel with a solid retainer and full-round-collar steel with a ball retainer. The collar is separate from the shank cross-section: a full round collar may be paired with a hex shank.
That is why “round” alone is not enough information. Record .580-inch hex or .680-inch round as the shank, and record oval or full round separately as the collar. For other retainer designs, check the exact manufacturer instructions.
Choose The Working End And Length
After confirming fit, compare the working end for the material and result you need. Our catalog separates moil points, narrow chisels, wider blades and specialized attachments so each can be checked against the job.
Read the length label carefully. Length under the collar is not the same measurement as overall length. Record the stated length, blade width where applicable, part number and quantity together; do not select from the thumbnail alone.
Resolve Uncertain Fit Before Ordering
If a connection is worn, modified or does not match the drawing, send the model information and photos for identification. Keep uncertain items separate in your notes rather than treating a visual resemblance as a confirmed match.
Follow the exact tool manual when changing accessories. Shut off and disconnect the air supply and release trapped pressure before an accessory change. The model’s operating and safety instructions remain the reference for the complete procedure.
Your Comparison Checklist
| Shank | Collar | Retainer Option |
|---|---|---|
| .580-inch hex | Oval | Solid retainer |
| .680-inch round | Oval | Solid retainer |
| .580-inch hex | Full round | Ball retainer |
| .680-inch round | Full round | Ball retainer |
Common Questions
Are Jackhammer Bits Universal?
No universal fit should be assumed. Confirm all connection dimensions and the retaining arrangement against the exact tool configuration.
Does A Round Collar Mean A Round Shank?
No. The collar shape and shank shape describe different parts of the connection. Our charts include both hex-shank and round-shank steel with full round collars.
References & Further Reading
- JackHammers: Owner-Supplied Shank and Collar Charts
- Ingersoll Rand: Construction Tools, Steels and Retainers (PDF)
- Chicago Pneumatic: CP9362, CP9363 and CP9373 Operating Instructions (PDF)
Use the current manual for your exact model for operating, safety and maintenance instructions.
