Quality hex bolts are made from high-quality materials that are carefully selected for their strength, durability, and resistance to corrosion. The manufacturing process for hex bolts should be precise and consistent, with strict quality control measures in place to ensure that each bolt meets the required specifications.

One of the key indicators of quality in hex bolts is their ability to withstand high levels of stress and tension without breaking or loosening. This is achieved through careful design and engineering, with the thread pitch, thread depth, and overall dimensions of the bolt optimized to provide maximum strength and holding power.

Advantages:
1. Supply wide range of hex bolts and nuts 
2. Surface Treatment Customized: H.D.G hot dip galvanized, zinc plated(blue, yellow,etc.), black oxide, chrome, etc.
3. M6-M20 hex bolt dimensions optional
4. Material Optional: Stainless Steel/Carbon Steel/Alloy Steel/High Strength Steel, etc.
5. Standard hex bolt: ASTM/ANSI, DIN, GB, AS, JIS

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Changzhou Ningsheng Hardware & Electrical Appliance Co., Ltd. is a professional hardware manufacturing company specializing in wedge anchor bolts and other fastener parts. The company covers an area of 15,000 square meters and is located in Hengshanqiao Town, Changzhou Economic Development Zone, Jiangsu Province.

Since its establishment in 2000, the company now has more than twelve mature automatic production and assembly lines, with an annual output of more than 7000 tons of hardware accessories. The company's main products include: various types of wedge anchor bolts(GB/DIN/ANSI), the hex bolts, the screw, the washers and other products.

Our factory has always been based on good faith management, product quality as the core, customer demand as the guidance, to provide customers with cost-effective products. At present, it has provided high quality products and services for many retailers and many well-known elevator manufacturers in China so far.

Our logistics and packaging are reliable and trustworthy!

The company has a group of high-quality technical personnel, sophisticated equipment, perfect monitoring facilities. We also have GB/T19001-2008/ ISO9001:2008 international quality system certification.