Acme Threaded Collar, Trap Thread, M20x4, Stainless Steel, OD 40mm

Ruland clamp style shaft collars do not mar the shaft, are infinitely adjustable, and have superior holding power when compared to set screw collars. This one-piece trapezoidal threaded shaft collar has an M20 x 4 bore, 40mm OD, and 15mm width. Threads are double tapped to ensure a burr-free finish which extends shaft life and allows for easier installation. Trapezoidal threading allows for higher axial holding power than traditional threaded collars. Tightly controlled face to bore perpendicularity is maintained (TIR of < 0.05mm) which is critical when the collar is used as a load bearing face, mechanical stop, or for component alignment. The work surface is identified by two grooves on the face allowing the user to easily identify which side is precision faced. This collar is stamped with the Ruland name and bore size for ease of identification. It is manufactured from 303 stainless steel to a fine burr-free finish with hardware of like material for consistent corrosion resistance. Hardware tests beyond DIN 912 12.9 standards for maximum holding power. It is RoHS and REACH compliant.