Square Nut

As a nuts factory in China, Ningbo Haixin® is famous for its high quality nuts. Square nuts are a typical example of them.With many years’ production experience, our factory can integrate special designing, researching & manufacturing and offer ODM&OEM service for you. And we are a productive enterprise and a direct sales factory. We produce and sell our own products, so our company can provide you with excellent quality,best price and service.

Haixin® Square nuts have a large surface area, which resists tightening and loosening. The dimensions conform with the latest issue of ANSI/ASME B18.2.2, and the mechanical property is per SAE J995 or ASTM A194. Our factory can also supply special square nuts per customers’ drawings. Square nuts are not as large in quantity and circulation as heavy hex nuts, but they have their own advantage and are irreplaceable. These square nuts can be assembled with button head oval neck track bolts for railroad and can also be matched with square bolts for constructions.

Square nuts can be applied in heavy equipment, bridge, railroad, steel channel and trucks.Ningbo Haixin offers many square nuts to North America and the domestic market.Our factory has certificates of ISO9001, CE, API, ISO14001 and ISO45001. And our laboratory is under CNAS17025 Audit.

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Heavy Square Nuts

As a Haixin® fasteners manufacturer in China, Ningbo Haixin Hardware is famous for its high quality nuts. Heavy square nuts are the typical example of them. Every year, our factory supplies many Heavy square nuts to domestic market and United States.Sincerely look forward to cooperating with you in the near future.

Heavy Square Nut Wrench Turn Fit

Haixin® Heavy Square Nut Wrench Turn Fit is one of the typical products of Ningbo Haixin Hardware Co., Ltd. Compared with common nuts, hvy square nut wrench turn fit has one more special requirement on the torque. Our factory has accumulated adequate experience to make such products. During the past 20 years, so many hvy square nuts wrench turn fit have been exported t0 the United States and Canada.Ningbo Haixin Hardware Co., Ltd is a productive enterprise and a direct sales factory. We produce and sell our own products.

Regular Square Nuts

Ningbo Haixin® is a professional suppliers on high quality regular square nuts.We are an enterprise integrating industry and foreign trade. All production procedures and test items are finished and done in our own factory. All of our regular square nuts are designed and manufactured according to required standards and buyers' specifications. And our plant can also produce fasteners according to customers’ samples or drawings. Insisting on principle of quality first, service and price best, we sincerely welcome new and old customers all over the world.