NIKKI Providing BEST Quality !

• Using our special grinding process, the contact surfaces are very smooth, which effectively increases the accuracy of machines!
• Manufacturing tolerance is in the Middle of ISO 4H standard!
• We provide High Quality and Stability by using PPAP controls.

Roughness Comparision

Thread Comparison

Our Primary Competitive Advantages

• Experienced Staff

• Guarantee/Warranty

• International Quality Approvals (ISO 9001:2008)

• Competitive Price

• Product Features

• Product Performance

• Prompt Delivery and Service

• Excellent Country of Origin (Taiwan)

• OEM/ODM Orders Accepted

 High Quality Custom-made Service 

• Full Grinding Nuts

• Outer Nuts

• Balance Nuts

With NIKKI Precision Lock Nut 

Effectivly reduce assembly time and increase your machine accuracy. Saving maintenance time and cost. Improving machine quality.
Thread Run-out with Axial	Turning Locknut	Grinding Locknut
Pitch Diameter	Big tolerance	Small tolerance
Surface Thread	Turning (compare figure)	Grinding (compare figure)
	Clearly indicate that the tuning locknut has roughened thread surface. When set forces, it will reduce preload and even locknut loosens.
Thread Precision	Precision level of every part are related to the locknut safety. (1)Mountain Shape (60º) (2)Pitch (3)Half angle vertical degree
	Turning Locknut	Grinding Locknut
Thread Run-out with Axial	0.005mm	0.002mm
Precision of Pitch Dia.	ISO 4H	higher than ISO 4H
Material	SCM440	SCM440
Treatment Hardness		HRC28°~32°(high tensile strength)
Surface Roughness	turning	grinding
Thread Precision	low	high
Price	low	high

Angular Displacement Loosening Torque

Remarks: ‧The data are for reference only ‧1Nm=10.2kgf.cm=0.73lb.ft   Threading Profile
‧Traditioal threading surface profile	‧MF,MR series threading surface profile by precision grinding

Axial Load Static