flanged nut

https://www.vxolinearmotion.com/products/flanged-nut/

Single Nut with Flange

It is the most simple Single Nut type. Normally BallScrews are used with small Axial play, but using oversized Balls allows for the application of light preloading and eliminates backlash(only Precision grade). Nut should be mounted using bolt holes in Flange. FBS, MRB(Return-plate), FKB(Internal-deflector), FDB(End-deflector), FEB(End-cap) circulation system can be distinguished. Please refer to dimension table.