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:
| Item | Specification |
|---|---|
| Standard | DIN6912 |
| Product Type | Thin Head Socket Cap Screw |
| Head Type | Thin Cylindrical Head |
| Drive | Internal Hexagon Socket |
| Pilot Fearture | Pilot Recess |
| Thread Diameter | M4-M36 |
| Material | Carbon Steel,Alloy Steel,Stainless Steel |
| Property Class | 8.8,10.9,12.9 A2-70 A4-70 |
| Surface Treatment | Bright Finish/Zinc Plated/Black Oxidation/Nylok Patch/Thread Locking |
Dimension Chart of DIN6912 Screw:
| Mon | M4 | M5 | M6 | M8 | M10 | M12 | M14 | M16 | M18 | M20 | M22 | M24 | M27 | M30 | M33 | M36 |
| P | 0.7 | 0.8 | 1 | 1.25 | 1.5 | 1.75 | 2 | 2 | 2.5 | 2.5 | 2.5 | 3 | 3 | 3.5 | 3.5 | 4 |
| dk max | 7 | 8.5 | 10 | 13 | 16 | 18 | 21 | 24 | 27 | 30 | 33 | 36 | 40 | 45 | 50 | 54 |
| dk min | 6.78 | 8.28 | 9.78 | 12.73 | 15.73 | 17.73 | 20.67 | 23.67 | 26.67 | 29.67 | 32.61 | 35.61 | 39.61 | 44.61 | 49.61 | 53.54 |
| da max | 4.7 | 5.7 | 6.8 | 9.2 | 11.2 | 13.7 | 15.7 | 17.7 | 20.2 | 22.4 | 24.4 | 26.4 | 30.4 | 33.4 | 36.4 | 39.4 |
| d1 min | 2 | 2.5 | 3 | 4 | 5 | 6 | 7 | 8 | 8 | 10 | 10 | 12 | 12 | 15 | 16.5 | 18 |
| d1 max | 2.06 | 2.56 | 3.06 | 4.075 | 5.075 | 6.075 | 7.09 | 8.09 | 8.09 | 10.09 | 10.09 | 12.11 | 12.11 | 15.11 | 16.61 | 18.11 |
| e min | 3.44 | 4.58 | 5.72 | 6.86 | 9.15 | 11.43 | 13.72 | 16 | 16 | 19.44 | 19.44 | 21.73 | 21.73 | 25.15 | 27.43 | 30.85 |
| k max | 2.8 | 3.5 | 4 | 5 | 6.5 | 7.5 | 8.5 | 10 | 11 | 12 | 13 | 14 | 16 | 17.5 | 19.5 | 21.5 |
| k min | 2.66 | 3.32 | 3.82 | 4.82 | 6.28 | 7.28 | 8.28 | 9.78 | 10.73 | 11.73 | 12.73 | 13.73 | 15.73 | 17.23 | 19.17 | 21.17 |
| r min | 0.2 | 0.2 | 0.25 | 0.4 | 0.4 | 0.6 | 0.6 | 0.6 | 0.6 | 0.8 | 0.8 | 0.8 | 1 | 1 | 1 | 1 |
| s min | 3.02 | 4.02 | 5.02 | 6.02 | 8.025 | 10.025 | 12.032 | 14.032 | 14.032 | 17.05 | 17.05 | 19.065 | 19.065 | 22.065 | 24.065 | 27.065 |
| s max | 3.1 | 4.12 | 5.14 | 6.14 | 8.175 | 10.175 | 12.212 | 14.212 | 14.212 | 17.23 | 17.23 | 19.275 | 19.275 | 22.275 | 24.275 | 27.275 |
| t min | 1.48 | 1.88 | 2.38 | 2.88 | 3.35 | 3.85 | 4.35 | 5.35 | 5.85 | 6.32 | 6.82 | 6.82 | 8.32 | 8.82 | 9.82 | 11.28 |
| t max | 1.72 | 2.12 | 2.62 | 3.12 | 3.65 | 4.15 | 4.65 | 5.65 | 6.15 | 6.68 | 7.18 | 7.18 | 8.68 | 9.18 | 10.18 | 11.72 |
| t1 min | 3.3 | 4 | 5 | 6.5 | 7.5 | 9 | 10 | 11.5 | 12.5 | 14 | 15 | 16 | 17 | 19 | 20 | 24 |
| t1 max | 3.6 | 4.3 | 5.3 | 6.86 | 7.86 | 9.36 | 10.36 | 11.93 | 12.93 | 14.43 | 15.43 | 16.43 | 17.43 | 19.52 | 20.52 | 24.52 |
Application of DIN6912 Thin Head Socket Cap Screws with Pilot Recess:
DIN 6912 Thin Head Socket Cap Screws are well suited to assemblies where fastener height is restricted by surrounding components or moving parts. Smaller M4–M8 sizes can be found in precision jigs, optical instrument mounts, robotic end-effectors, 3D printer mechanisms, camera mounting systems, and laboratory equipment. M10–M20 sizes are suitable for die sets, injection-molding tooling, indexing tables, linear guide assemblies, welding fixtures, and automated production stations where a protruding fastener head could interfere with adjacent components. Larger M22–M36 screws can be selected for heavy-duty tooling plates, forming equipment, lifting fixtures, large machine bases, and industrial structural assemblies requiring a low-profile socket-head connection.
For carbon and alloy steel versions, property class 8.8 is suitable for general tooling and machine construction, while 10.9 and 12.9 grades can be selected for highly loaded clamping points in stamping dies, forming tools, cutting fixtures, hydraulic tooling, and heavy-duty assembly fixtures. A2-70 stainless steel versions are suitable for laboratory instruments, food-packaging machinery, clean-room equipment, and outdoor control systems where corrosion resistance is important. A4-70 versions provide a better choice for desalination equipment, marine deck machinery, wastewater treatment systems, and chemical handling equipment exposed to more aggressive environments.