Milwaukee 48-66-1015 1/4-Inch Self-Releasing Collet and Locking Nut Assembly
- Versatile and durable self-releasing collet and locking nut assembly
- All steel construction for durability
- Self-release feature to eliminate bit jamming
- Wide lock nuts provide a secure wrench gripping surface
- Extra-long 8-segment collet design minimizes vibration and ensures bits run true
Product Description
Router Accessories Type: 1/4 In. Collet & Nut For Use With: Milwaukee 5615-20, 5615-21, 5619-20, 5625-20Amazon.com Product Description
The Milwaukee 1/4-Inch Self-Releasing Collet and Locking Nut Assembly is designed for use with Milwaukee routers (series 5615, 5616, 5619, and 5625). The assembly includes a premium 1/4-inch collet with a self-release feature that prevents bits from jamming in the assembly. The collet’s extra-long, 8-segment design ensures maximum bit-to-collet surface contact to minimize vibration and unwanted runout. The precision-ground locking nut features extra wide faces to ensure a firm and reliable nut-to-wrench connection…. More >>
Milwaukee 48-66-1015 1/4-Inch Self-Releasing Collet and Locking Nut Assembly

I have several Milwaukee routers and several Porter Cable. The Milwaukee’s have much less runnout than the PC’s. They seem to run a little quieter too.
I needed a 1/4″ collet, no one had one in town. I ordered one from a tool repair shop, the delivery was going to be a couple of weeks. I thought I’d see what I could find online as I could always use a spare. Amazon was the first source that came up. I ordered the collet and it was in my hands – in Candada mind you – in two days.
The collet is great, but I’m really blown away by Amazon’s service.
it is what it is – it works as expected – can’t get overly excited… it’s a 1/4″ collet
I needed the 1/4″ collet for my 3 1/2 hp milwaukee for some of the smaller bits I use. It works well as do all milwaukee products.
This item appears well made and functioned well for the limted time of usage since purchase.
Just a warnning do not use this collet for prolonged time because the prior collet shatter after prolonged use when removing a bit.
Like another reviewer’s, my collet was shipped from the factory assembled improperly, with the collet inserted backwards in the locking nut. Ridiculous. I was quite nervous about reversing the piece without damaging the brand-new parts, but they are basically pressure-fitted, and can be removed and reinstalled with a pair of (strong) bare hands.
Now it works fine, although I find installation of bits more of a nuisance than with my Bosch router.