3.35 X .91" 45 DEGREE BT50 RETENTION KNOB (3900-5508)

3.35 X .91" 45 Degree BT50 Retention Knob Made of SNCM 21 alloy steel hardened to HRC 52~56°. All dimensions are in accordance to MAS 403 machine specifications. L is 3.35". L1 is 1.38". L2 is .39". D is 1.5". D1 is .91". D2 is .67. D4 is .98". Thread is M24 X 3.0. Shipping Weight: 0.7 lbs