Makita 310108-5 — Tool Retainer (original Makita)
Restore secure bit retention in your SDS‑MAX demolition hammer with the original Makita 310108-5 tool retainer. This small, precisely made retainer fits into the bit‑holding/chuck assembly and works with the chuck ring and holder cap to lock SDS‑MAX chisels and bits in place for reliable operation.
Key details
- Part number: 310108-5 (sold as a single retainer).
- Function: tool/bit retainer used inside the chuck/tool‑holder assembly to secure SDS‑MAX bits.
- Construction: genuine Makita part made from durable materials to withstand the work of demolition hammers.
Fits (examples)
- Makita HM0860C (SDS‑MAX demolition hammer).
- Makita HM0870C (SDS‑MAX demolition hammer).
- Makita HM0871C and other HM08xx/HM087x series models that use the same chuck/retainer arrangement.
Why this part matters
A worn or missing retainer will allow the bit to slip or fall out under impact — replacing it restores the original bit‑holding integrity so the hammer performs safely and as designed.
Installation note
This retainer installs in the tool‑holder/chuck area alongside the chuck ring and holder cap (refer to your model’s parts breakdown for exact placement and orientation).
If the model numbers above match your tool, the Makita 310108-5 is the original Makita replacement part used for the bit‑retention assembly.
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