Wuxi Sharp Metal Products Co., Ltd.

Internal Expansion Screws

Internal Expansion Screws

Internal Expansion Screws

When installing stainless steel internal expansion screws, the screws will expand as the nuts or bolts are tightened, and they will be tightly embedded in the material hole to form a strong connection. The expansion action occurs inside the thread, which increases the friction with the hole wall. It is suitable for a variety of occasions that require high-strength fixing, especially in environments with large loads and corrosion resistance. It is widely used in construction, machinery, electrical, outdoor facilities and other fields, with simple installation methods and long-lasting durability. It is widely used in fixing system windows in China.

Material

 SUS304 SUS201

Head type

 countersunk cross, countersunk hexagon, pan head with washer, external hexagon with washer, etc.

Thread size  Length Drilling size
6 60 80 100 120 150mm 8mm
8 60 80 100 120 150 mm 10mm
10 60 80 100 120 150 200 mm 12mm
12 60 80 100 120 150 200 mm 16mm
Company
Wuxi Sharp Metal Products Co., Ltd.
Wuxi Sharp Metal Products Co., Ltd.
Wuxi Sharp Metal Products Co., Ltd. is a professional enterprise that produces and sells screws. Our main products include carbon steel screws, stainless steel self tapping screws, wood screws, drywall screws, fiber screws, cement screws, etc. We also engage in the trade of door and window accessories. We were officially registered and established in 1993 and are located in Yanqiao Industrial Park, Huishan District, Wuxi City, Jiangsu Province.
Our company has a factory of 6000 square meters, with more than 100 machines and inventory of over 800 tons. The annual output is about 2000 tons. Since 2000, we have been supplying plastic steel door and window accessories, which are now widely used in the assembly and installation of aluminum alloy engineering doors and windows, home decoration door and window systems, as well as import and export.
Our company has large-scale production and warehousing capabilities. Improving product quality, enhancing employee competence, implementing a strict quality assurance system and a comprehensive management system, and providing high-quality after-sales service for our products are our foundation. Our company adheres to the principle of "quality first, reputation first" and provides customers with a variety of products with guaranteed quality and quantity. In the fierce market competition, keep up with the times, maintain innovation, and ensure product leadership! Relying on technology, continuously improving the technological content of the products sold, and creating higher market value for society, customers, and companies. Our company has always been founded with integrity and operates the market with integrity, winning a good reputation and the respect of domestic and foreign peers.
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