NW40-150-CHK 
NW40 (KF40, QF40) Horseshoe Clamp 
NW40 Spring Clamp with Blue Knob 
NW40 Clamping Ring 
• 304 Stainless 
• NW40 Series (KF, QF) 
• High Vacuum Clamps (Klamp) 
 NW (KF) High Vacuum Hardware 
• Fits KF, NW, QF Series Flanges & Fittings 
 
• Fits Kwik-Flange, Quick Flanges & Fittings 
• Quick Clamp 
 NW40 (KF40) Flange OD: Ø2.18" 
• NW40 Tube OD: 1.50" (Typical) 
• NW40 Centering Ring Counter Bore: 1.62" 
 NW40 High Vacuum Flange Equivalents 
KF40, KF-40, K150, NW-40, QF40, ISO-QF  
 NW40-150-CHK Compare to: QF40-150-HC P107639  P107655  C10516401 IVP Spring Clamp