Internal thread is 7/16"-20. Made of hardened, high grade tool steel.
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Specifications:ER16. Size: 2mm - 10mm. Features: 65 Manganese Steel Material (Manganese and Titanium Hardened Steel). Accuracy: Within 0.007mm.
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1.Precision ground to close tolerance2.Hardened and ground throughout3.Suitable for all kinds of milling machine spindle taper hole for the R84.It used for clamping tools,change the taper hole of spindle,It is easy to use,to enlarge the use range of machine tool Specifications:Clamping Diameter: 20mm / 0.79-inchDrawbar Thread: M12x1.75Material: 65Mn Spring SteelHardness: HRC 55Accuracy: 0.0005-inch (0.013mm)Total Length: 103mm / 4.06-inchTop Diameter: 32.6mm / 1.28-inchBottom Diameter: 24.1mm / 0.95-inch.
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Crawford / other 4728 B42 173E Collets. 10mm (A) Crawford - Grooved, 3, very good condition, 2 countersinked holes in base rim. 13mm Crawford - Grooved, 3, slight scoring to top surface. 17mm Crawford - Grooved, 3, very good condition.
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Can be viewed at;.
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R8 5mm RoundCollet.
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This 28 piece set of 5C Collets are PRO quality. They range in size from 1 to 28mm "and include several features, including internal and external threads, and a 3 year warranty. The clamping surface of the collet is hardened to 55-60 HRC and the spring part is hardened to 40-45 HRC.
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