Precise Retention Knobs – Style 4

• Coolant Thru
• Heat Treated alloy steel
• ISOAll dimensions in accordance to ISO/DIS7388/2-1984A specifications
• BTAll dimensions in accordance to ANSI specifications for CAT holders and MAS specifications for BT holders

Item No. 3900-5372 3900-5497 3900-5499 3900-5374 Thread T.P.I. M16x2.0 M16x2.0 M24x3.0 M24x3.0 Knob Dia. D1 0.748″/19mm

0.740″/18.8mm

1.140″/28.95mm 1.142″/29mm Neck Dia. D2 0.512″/13mm 0.490″/12.45mm 0.820″/20.83mm 0.768″/19.5mm Hole Dia. D3 0.276″/7mm 0.315″/8mm 0.394″/10mm

0.445″/11.3mm

Pilot Dia. D4 0.669″/17mm 0.669″/17mm 0.984″/25mm 0.984″/25mm Diameter D 0.906″/23mm 0.866″/22mm 1.457″/37mm 1.417″/36mm OAL L 1.752″/44.5mm 1.736″/44.1mm 2.567″/65.2mm 2.583″/65.6mm Shoulder L1 0.433″/11mm 0.551″/14mm 0.692″/17.58mm 0.692″/17.58mm Shoulder L2 1.181″/30mm 1.22″/31mm 1.969″/50mm 1.969″/50mm