DIN7984 Class 8.8 Alloy Steel Low-Profile Socket Head Screws ASTM A574 Socket Head Cap Screws

Products Description

These alloy steel screws are nearly twice as strong as stainless steel low-profile screws. With half the head height of a standard socket head, they fit where space is limited, but their low profile makes their head weaker. Not recommended for critical fastening applications. Length is measured from under the head.

Black-oxide steel screws are mildly corrosion resistant in dry environments. Zinc-plated steel screws resist corrosion in wet environments.

Coarse threads are the industry standard; choose these screws if you don’t know the pitch or threads per inch. Fine threads are closely spaced to prevent loosening from vibration. They are not compatible with coarse threads.

Screws that meet ASTM A574 comply with specifications and testing requirements for material quality. Screws that meet DIN 7984comply with specifications for dimensional standards.

Products Specification

Note: Material, Size and Surface Treatment for choose.

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We are professional manufacture factory of screws, bolts, rivets, nuts,bushing and non-standard fastener from China.

Suzhou Runtai Prcision Hardware Co,.Ltd was eastiblished in 2000, located in the Suzhou City. With more than 10 years export experience, our products has been best-selling in Europe, the United States, the Southeast Asia.

We can supply the fastener according to GB, DIN, JIS, ANSI, BS, ISO and other standards, we can also supply fastener according to customer request.With favorable prices,in-time delivery and perfect after-sales service, my company have build longterm business relationship with more than 20 country customers.

Widely praised by my customer.

Quality is the eternal pursuit of my company. In 2011, my company pass the third part quality system certification ISO9001-2008. After one year of successfully delvoping, we passed another third part quality system certification ISO / TS16949.

With advanced production equipment, Modernization detection, testing equipment and instruments, scientific and effective management methods, to provide best quality products and services to customer.