SKF 71816 CDGB/P4 Single Row Angular-Contact Ball Bearing, High Precision Bearing - 80 mm ID, 100 mm OD, 10 mm Width Hand Tool The base threaded nut is

The base threaded nut is carbon steel with hardened alloy fasteners

As a part affected by wear

For fine threaded fittings

197 Inch | 5 Millimeter Bearing Properties Rolling Element Ball Bearing Cage Material Steel Enclosure 2 Metal Shields Internal Clearance C0-Medium Precision Class ABEC 1 | ISO P0 Inch - Metric Metric Features Maximum Capacity / Filling Slot No Snap Ring No Internal Special Features No Codes UNSPSC 31171504 Harmonized Tariff Code 8482

SKF 71816 CDGB/P4 Single Row Angular-Contact Ball Bearing, High Precision Bearing - 80 mm ID, 100 mm OD, 10 mm Width Hand Tool The base threaded nut isSpindle bearings Spindle Bearings are precision angular contact ball bearings designed specifically for machine tool spindles and similar high speed, high precision applications. They provide high running accuracy and accommodate combined radial and axial loads at very high speeds with low friction and low heat generation. Manufactured to the highest precision standards. Suitable for use in applications where extreme accuracy and reliability are