PT Series Precision Locknuts – Small Profile

The PT series combines the ground, square-faced precision of the PN nut with the reduced envelope of the small-profile range. It is the part to specify when a precision spindle bearing has to be preloaded accurately but there is not enough axial or radial room for a standard precision locknut. PT nuts lock with PWT series small-profile precision lockwashers.

PT Series Specifications

• Part numbers: PT-00 through PT-18 (19 sizes stocked)
• Bore / shaft size: 0.391 in to 3.527 in
• Outside diameter: 0.719 in to 4.312 in
• Material & temperature: Carbon steel, black oxide finish; 300°F maximum operating temperature
• Standards: ANSI/ABMA 8.2-1999; made in USA, RoHS compliant

Applications

Compact precision spindles, servo and instrument drives, robotics joints and cartridge bearing assemblies where space at the bearing is the binding constraint.

Related Whittet-Higgins Series

• PWT Series Precision Lockwashers – Small Profile
• PN Series Precision Locknuts – Inch
• NT Series Bearing Locknuts – Inch, Small Profile
• BASI / BAST Series Bearing Assembly Sockets – 16 TPI & Small Profile

Apollo is an authorized Whittet-Higgins distributor. Every part on this page is genuine Whittet-Higgins, manufactured in the USA. Need a size that is not listed, or help matching a locknut to its lockwasher and assembly socket? Contact our team.