FA series
FA series
SWT/FA series
SWT/FA series lock nut has four grooves along the circumference. Nuts with size of 15 and below havetwo planes directly opposite each other, and can be clamped by general wrench.. This design can meetrequirements of high precision, easy installation and steady locking etc.
Material: 42CrMo,45#, 40Cr
Hardness: HRC28°—32°
Thread Precision: ISO4H
Run Out: 0.005mm
