Anti-Harm Knob (HSS)

The anti-harm knob is designed for safety and security by eliminating catch points with a tapered knob recessed into the rose, a tapered thumbturn (for mortise lock thumbturn functions) with Torx® pin security screws, tapered cylinder collars and concealed mounting screws. Available as sectional trim, the anti-harm knob features recessed finger holes for a better grip and the reliability of the ML2000 ANSI/BHMA grade 1 mortise lock. Ideal for psychiatric or detention facilities.


  • Recessed finger holes for a better grip
  • Tapered knob recessed into the rose
  • Concealed mounting screws for added security
  • Tapered anti-harm thumbturn standard for all ML2000 thumbturn functions
  • Tapered cylinder collar standard for all for ML2000 cylinder functions
  • Available in 606, 626 and 626C finishes only
  • Available in 1-3/4 - 4” door thicknesses


Available Finishes

BHMA 606 Satin Brass
BHMA 626 Satin Chrome Plated
626C Satin Chrome Plated with MicroShield®