NSK 7309 BG Angular Contact Ball Bearing - 45 mm ID, 100 mm OD, 25 mm Width, Normal HVAC The ratcheting box end is

The ratcheting box end is designed to need as little as 5° to move fasteners versus 30° for standard wrenches and features off-corner loading for a better grip on the fastener and reduces fastener rounding

The Whittet-Higgins SNS30-16S is a two-piece splitnut shaft locknut with a fine 16-threads-per-inch pitch

Used together with matched PW series lockwashers

tempered chrome-molybdenum steel

NSK 7309 BG Angular Contact Ball Bearing - 45 mm ID, 100 mm OD, 25 mm Width, Normal HVAC The ratcheting box end isAngular Contact Ball Bearing Angular Contact Ball Bearings have raceways in the inner and outer rings that are displaced relative to each other in the direction of the bearing axis. They are designed to accommodate combined loads. Manufactured to precision tolerance class for demanding applications. Robust steel cage construction ensures durability. Suitable for use in a wide range of industrial applications where reliability and performance are