The DIN 7504 standard provided exact specifications for critical dimensions. The core of the fastener is its , which conformed to the DIN 7970 and ISO 1478 standards. For the Type K, the dimensions were clearly defined for each thread size, ranging from ST 2.9 to ST 6.3.
Specialized drill point (Type K) designed to drill into steel and other metals.
For precise engineering work, you can find official versions of the DIN 7504 K standard through technical publishers like Beuth Verlag or various industrial fastener suppliers who provide PDF technical data sheets based on these standards.
Dictates the size of the socket or nut setter needed for installation. din 7504 k standard pdf
The DIN 7504 K standard has played a significant role in modern fastening technology. While the standard itself has been officially withdrawn in favor of the international , its legacy and specifications remain highly relevant. Understanding this component is essential for anyone in manufacturing, construction, or maintenance looking for a fast, reliable, and efficient fastening solution. For new projects, always refer to the current ISO 15480 to ensure you are using the most up-to-date and globally recognized specification.
The "K" profile is optimized to reduce hoop stress. If a standard sharp thread profile were used, the stress concentration factor ($K_t$) could exceed the fracture toughness of the plastic, leading to boss bursting. The DIN 7504 K profile distributes the radial force over a larger surface area, allowing the use of higher tightening torques without structural failure of the parent component.
The screw features a specialized tip designed to drill into metal, eliminating the need for pre-drilling or tapping, which significantly boosts installation speed. The DIN 7504 standard provided exact specifications for
The DIN 7504 K screw functions as a cold-forming tool. Upon insertion into a prepared pilot hole, the screw displaces the thermoplastic material into the root cavities of the thread.
DIN 7504 K is a German standard that specifies the requirements for bolted connections with hexagon head bolts and nuts. The standard is part of the DIN 7504 series, which covers various types of bolted connections. The "K" in the standard designation indicates that it is a "verification" or "inspection" standard.
The official publisher of German DIN standards. Specialized drill point (Type K) designed to drill
High-performance multi-layer coatings providing exceptional salt spray resistance, making them ideal for outdoor industrial environments. Industrial Applications
Securing internal frames, brackets, and body panels.
: Maximum diameter of the integrated washer/flange. Performance and Application DIN 7504 K Self-Drilling Screws Overview | PDF - Scribd
DIN 7504 K screws are categorized by their thread size, which dictates all other physical dimensions of the fastener. Core Dimensional Parameters Ranges from ST 2.9 to ST 6.3.
Unlike traditional tapping screws that require a pre-drilled pilot hole, DIN 7504 K screws perform three operations in a single sequence: