Utoolmart R8 Precision Round Spring Collet, R8 Collet, Precision R8 Collet Set, 4mm Mill Chuck Holder, 65Mn Spring Steel, 7/16-20UNF Thread, Taper Spindle R8 Collets for Mill Machine, 1 Pcs

• 【Fetures】- R8 Collets do not collapse. The Tail Thread Is 7/16-20UNF; Tooth Type: Fine Teeth; Precision: 0.013mm; Hardness(HRC): HRC55; Clamping Range (Inner Diameter): 4mm / 0.16-inch.
• 【Material】- Using high quality 65Mn alloy steel, hardened, long life and more durable. Precision ground to close tolerance. Positioning slot make the collets more quickly and convently to install.
• 【Advantage】- Large clamping force, wide glamping range, not aasy to wear, strong and durable. Surface grinding to ensure tolerance and accuracy, strong versatility and reliable.
• 【High Quality 】- Hardened and ground throughout Superior quality R8 Collets Set. Precision Thread Hole allows the collet to be quicky connected with pull rod. The silver color looks perfectly cool, also providing more conveniently function.
• 【Application】- Spindle is R8 taper that any R8 shank will fit. It used for clamping tools,change the taper hole of spindle,It is easy to use,to enlarge the use range of machine tool.

Utoolmart R8 Collet Mill Chuck Holder 65Mn Spring Steel 7/16-20UNF Thread Features 1. Precision ground to close tolerance. 2. Hardened and ground throughout. 3. Precision ground to close tolerance. 4. Using high quality 65Mn alloy steel, hardened, long life and more durable. 5. Positioning Slot make the collets more quickly and convently to install. 6. Suitable for all kinds of milling machine spindle taper hole for the R8. 7. It used for clamping tools,change the taper hole of spindle,It is easy to use,to enlarge the use range of machine tool. Technical Parameters * Clamping Diameter: 4mm / 0.16-inch * Drawbar Thread: 7/16-20UNF * Material: 65Mn Spring Steel * Hardness: HRC 55 * Accuracy: 0.0005-inch (0.013mm) Package Content * 1 x R8 Metric Round Collet