The standard defines the dimensions, materials, and technical delivery conditions for recessed head chipboard screws. These screws are specifically designed for use in wood-based materials like particleboard, MDF, and plywood without the need for pre-drilling. Key Content in the PDF
Zinc plating offers decent corrosion protection (240-480 hours salt spray). For outdoor use, specify zinc flake coating (Geomet/Dacromet) or stainless steel (A2/A4).
The standard specifies dimensions, tolerances, materials, and mechanical properties. The screws are generally categorized into two main types based on head style: : Countersunk flat head screws. Type B : Raised countersunk (oval) head screws. 1. Drive Types
These screws are unique because they do not generate chips. Instead, they plastically deform the material (aluminum, copper, brass, or soft steel) to create a tight, high-strength thread. din 7505 standard pdf
DIN 7505 (A) - 1986Particle Board Screws with Cross Recess Type Z, Countersunk Head - Form A. Global Fastener Platform DIN 7505 Chipboard Screw Specifications | PDF - Scribd
Yellow Zinc, Blue Zinc (Galvanised), Phosphate, or Nickel Plated
The 40° thread angle is sharper than standard wood screws and facilitates cutting into wood fibers without cracking the material. A coarse thread pitch (twice that of standard wood screws) and a thin minor diameter reduce insertion torque. The triple thread design ensures a secure, high-retention hold. Type B : Raised countersunk (oval) head screws
: Includes minimum torsional resistance values (e.g., 3.0 N.m for a 4mm screw) and a surface hardness of at least 450 HV. Global Fastener Platform Critical Technical Data Table
| Form | Head Style | Drive Type | Typical Application | |------|------------|------------|---------------------| | | Countersunk (flat) | Z-type cross recess (Pozidriv) | Countersunk applications requiring flush finish | | Form B (DIN 7505-B) | Pan head | Z-type cross recess (Pozidriv) | Surface mounting where head remains exposed | | Form C | Oval head | Z-type cross recess (Pozidriv) | Decorative applications with oval profile |
Using certified DIN 7505 components guarantees that your fastening points meet international safety, load-bearing, and durability benchmarks. they plastically deform the material (aluminum
Allows the screw to sit flush with or below the surface of the wood.
The DIN 7505 standard is widely used in various industries, including:
Commercial distributors providing technical standards.
While DIN 7505 remains a staple reference in manufacturing, it has largely been harmonized with or superseded by European and international standards like for structural timber applications. However, the designation "DIN 7505" is still widely used in commercial trade and engineering blueprints. Technical Specifications and Dimensions
A robust joint must satisfy: Stripping torque > Driving torque × Safety factor (typically 1.5–2.0) .