DIN 933 8.8 black zinc flake Bolt with hexagonal head and full thread

A fully threaded bolt is a fastener consisting of a hexagonal head and a stud with a metric thread along its entire length.

The DIN 933 bolt is used for connecting and fastening parts and structures in construction and mechanical engineering.

The material of manufacture is high-strength structural alloy steel. The high strength class 8.8 allows the bolts to be used in highly loaded connections.

Coating: black zinc plating.

Main characteristics of this coating:

• Organic black topcoat;
• Excellent corrosion protection;
• High hiding power on silver and black base coatings;
• Attractive uniform black appearance;
• Very good chemical resistance; increased UV resistance;
• Excellent adhesion, i.e. the coating does not peel, crack or flake even under mechanical stress or chemical attack;
• Built-in lubricant component for controlled friction characteristics;
• No hydrogen embrittlement;
• Excellent corrosion resistance in NSST and cyclic corrosion tests.

Analogs are GOST 7805 (full thread), GOST 7798 and DIN 931 (partial thread), ISO 4017, PN 82105.