1.1This specification covers ferrous needle rollers having spherical ends.
1.2Spherical-ended needle rollers designed to this specification are intended for use as bearing components. A complement of rollers is run on a hardened (HRC 58-65, see Test Methods E18) shaft and in a hardened (HRC 58-65) housing bore to form the bearing.
1.3The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.
1.4This specification contains many of the requirements of MS19065, which was originally developed by the Department of Defense and maintained by the Defense Supply Center Richmond. The following government activity codes may be found in the Department of Defense, Standardization Directory SD-1.
| Preparing activity | Custodians | Review Activities |
| DLA–GS4 | Army–AT | Navy–MC |
| | Navy–OS | Air Force–84 |
| | Air Force–99 | |
| | DLA–GS4 | |