DIN 933 is a German industrial standard that specifies the dimensions and technical requirements for full-threaded hexagon head bolts. These are high-strength, fully threaded fasteners with a hexagonal head, designed for use with a wrench or socket. They are widely recognized and utilized in international mechanical engineering, construction, and manufacturing sectors for creating secure and reliable threaded connections.
Key Features & Specifications:
Standard: Conforms to DIN 933 (German Institute for Standardization), which is compatible with international metric specifications.
Thread: Full thread along the entire length of the shank, allowing for a nut to be used at any point.
Head: Standard hexagonal (hex) head, enabling high torque application with common tools.
Material Grades: Available in various materials to suit different environmental and strength requirements.
Steel, Grade 8.8: A common and economical grade for general-purpose applications, offering good tensile strength.
Stainless Steel A2/A4 (304/316): Provides excellent corrosion resistance. A4-70 (316 stainless) is particularly suitable for harsh environments, including marine and chemical exposures.
Surface Treatment: Options include zinc plating (e.g., blue-white zinc) for basic corrosion protection
, or natural finish for stainless steel variants.
Sizes: A comprehensive range from M3 to M100 and beyond is available, with lengths to meet diverse application needs.
Applications:
DIN 933 hex bolts are versatile fasteners used across numerous industries:
General Machinery & Equipment Assembly: For securing components in machines and production lines.
Construction & Structural Engineering: In steel structures and framework assembly.
Automotive & Vehicle Manufacturing: For engine components, chassis, and body panels.
Electronics & Appliance Manufacturing: In the assembly of durable consumer and industrial goods.
Infrastructure & Utilities: In applications requiring robust and reliable fastening.
Post time: 2026-04-29 11:31:55
