DIN6912 Thin Head Socket Cap Screws with Pilot Recess

DIN 6912 Thin Head Socket Cap Screws with Pilot Recess are designed for compact fastening applications where the available space above the joint is limited. Their reduced head height provides a lower-profile alternative to conventional socket head cap screws, while the internal hexagon socket allows the screw to be tightened with a hex key or suitable driver. The pilot recess beneath the head provides additional guidance and positioning where the mating component is designed to accommodate the screw, helping maintain a controlled and accurately located fastening point.

The combination of a thin cylindrical head, pilot recess, and internal hex drive makes DIN 6912 suitable for mechanical assemblies, machine components, tooling, fixtures, equipment covers, and other constructions where surrounding parts leave little clearance around the fastener. Screws can be selected in different materials, property classes, thread configurations, lengths, and surface finishes according to the load, corrosion conditions, and manufacturing requirements of the assembly. This allows the same low-profile fastening concept to be adapted to both general machinery and more demanding precision equipment.

Specification:

DIN 6912 is specified by a low-profile socket head configuration combined with a pilot recess, making the screw geometry different from a conventional socket head cap screw. The internal hexagon provides the tightening interface, while the reduced head height is intended for assemblies where clearance above the fastener is restricted. The pilot recess can be used as a locating feature when the mating component incorporates a suitable recess or positioning arrangement.

For mechanical applications, DIN 6912 screws are available in carbon or alloy steel with property classes 8.8, 10.9, and 12.9. Stainless steel options include A2-70 and A4-70 for assemblies where corrosion resistance is a priority. Thread type, screw length, surface finish, and dimensional tolerances can be specified according to the assembly requirements. Depending on the production method and application, finishes such as plain, black oxide, zinc plated, or other customer-specified treatments can be supplied.

Dimension Chart of DIN6912 Screw:

The DIN 6912 dimension chart shows the geometric details that determine how the screw fits into a low-clearance assembly. In addition to the nominal thread diameter and screw length, particular attention should be given to the reduced head height and the pilot recess beneath the head. These dimensions determine how far the screw head projects above the mating surface and how accurately it can locate within a corresponding recess or counterbored feature.

The chart provides the main dimensional references for each DIN 6912 size, including thread diameter (d), screw length (l), head diameter (dk), head height (k), internal hexagon socket dimensions, and pilot recess dimensions where specified. When selecting a screw, the head height should be checked against the available clearance, while the pilot recess should be matched with the mating component to ensure proper seating and positioning.