YINSH offers several specialized precision locknut series, including SBL superfine balanced locknuts, SGL superfine grinding locknuts, YS precision locknuts, and YSPL precision locking nuts. These products are designed for machine tool spindles, built-in motor spindles, direct-drive spindles, ball screws, bearings, and precision transmission systems.
For high-speed machine tool applications, the company's balanced locknuts are engineered to support rotational stability and minimize vibration associated with imbalance. Precision-ground threads and contact surfaces help maintain accurate positioning and secure fastening under demanding machining conditions.
YINSH also manufactures hydraulic nuts and customized precision components, while providing internal and external thread grinding services. Its engineering capabilities serve machine tool builders, spindle manufacturers, bearing suppliers, and manufacturers of specialized industrial machinery.
Research, testing, and quality assurance are important parts of the company's operations. YINSH established a dedicated Precision Locknut R&D and Testing Laboratory in 2012, which received TAF accreditation in 2014. The facility supports precision measurement, product testing, and ongoing development of fastening technologies.

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