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Retention Knobs

Manufactured to industry standards or machine builder specifications.

Note

It is critical that the correct retention knob is used with each machining center. Please verify all dimensions prior to ordering. Machine specifications will be located in your machine manual.

Retention knob drawing
Retention knob
Shank Part Number A D1 D2 D3 L1 L2 L3 L4 H F T Socket O-Ring OD O-Ring ID Notes
BT40 HPS-001 45 0.591 0.394 0.669 2.362 1.378 1.102 0.236 19 M16 TWS-M19 - - MAS P40T-1
BT40 HPS-001C 45 0.591 0.394 0.669 2.362 1.378 1.102 0.236 0.157 19 M16 TWS-M19 Y - MAS P40T-1
BT40 HPS-G51 45 0.74 0.49 0.669 1.736 0.752 0.552 0.118 0.276 19 M16 TWS-M19 Y - COOLANT
BT40 HPS-806-1 75 0.748 0.551 0.669 2.126 1.142 0.906 0.236 0.236 19 M16 TWS-M19 Y - JIS B6339
BT40 HPS-O08 90 0.591 0.394 0.669 2.362 1.378 1.102 0.236 - 19 M16 TWS-M19 MAS P40T-3