Will this screw in to a cnc spindle thread?

If you have to ask you're probably using a starter CNC something along the lines of a 3018, almost every entry level CNC mill/router comes with er11. Also if your spindle is 300 w or less more than likely you have an ER 11 and it only came with an 1/8 in Chuck. What you're ordering and what is inside your machine are the equivalent of a spring on steroids that when forced closed grip tight your bit. It's going to take a little bit of force to change them don't be scared it's fine that's how it works. I hope this gives you the confidence to order some 1/4 shank bits and have some fun. For quick removal of a lot of material I recommend a 1/4 in 2 flute spiral up cut, and 1/4 in vbits for the artistic stuff. Generally speaking though stay around 1/8 in tool with 1/4 shank for durability. Unless you have a much stronger machine than I'm assuming I don't recommend any of the planning bits as it's going to cause you nothing but strife and stall your machine. All of this I know from experience because I just graduated away from entry level machines I wish someone had told me all this when I first started.

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⚙️ Elevate your CNC game with precision that professionals trust!

COMPACT PORTABLE - Lightweight 10g design with included storage case for effortless transport and organization.
UNIVERSAL 1 4 IN FIT - Seamlessly compatible with a wide range of CNC, lathe, and engraving machines.
SECURE STABLE HOLD - Cam locked by screw ensures your tool stays firmly in place, eliminating wobble.
MICRON LEVEL ACCURACY - Achieve flawless CNC milling with ±0.005mm precision for professional-grade results.
ROCK SOLID DURABILITY - Crafted from premium 65Mn spring steel, built to withstand rigorous machining demands.

The ER11 Collet Chuck 1/4in is a high-precision tool holder made from durable 65Mn spring steel, offering an accuracy of ±0.005mm. Designed for CNC milling, lathe, and engraving machines, it features a secure cam lock mechanism and comes with a compact storage case. Engineered in the USA, this lightweight chuck ensures stable, reliable performance for demanding machining tasks.

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Thread Size	1/4-20 UNC
Capacity	0.25 Inches
Included Components	Storage Case
Manufacturer	Hicello
UPC	653334426550
Country of Origin	USA
Item model number	SZ050090017341RK-15
Package Dimensions	12.1 x 10.7 x 2.7 cm; 10 g
ASIN	B07FY5D9XK

ER11 Collet Chuck 1/4in for CNC Milling Chuck Lathe Tool Holder Engraving Machine Spindle Motor Spring Collet

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