DIN 912 Socket Head Cap Screws
DIN 912 Socket Head Cap Screws
ISO Equivalent: ISO 4762 | Metric Hex Socket Cap Screws
DIN 912 defines hexagon socket head cap screws — the most widely used metric fasteners in precision machinery, automotive, and engineering applications. These screws feature a cylindrical head with internal hex (Allen) drive.
Quick Specifications
Key Features
High Torque Capacity
Internal hex drive allows higher torque application than Phillips or slotted drives without cam-out.
Compact Head Profile
Cylindrical head sits closer to the surface than hex bolts, ideal for tight spaces and flush mounting.
High Strength Options
Available in Class 12.9 (176,900 PSI tensile) — stronger than Grade 8 SAE fasteners.
Precision Threads
Available in coarse and fine pitch for optimal thread engagement in different materials.
Dimension Chart
| Size | Pitch (Coarse) | Head Dia. (dk) | Head Height (k) | Hex Key Size |
|---|---|---|---|---|
| M3 | 0.5 mm | 5.5 mm | 3.0 mm | 2.5 mm |
| M4 | 0.7 mm | 7.0 mm | 4.0 mm | 3 mm |
| M5 | 0.8 mm | 8.5 mm | 5.0 mm | 4 mm |
| M6 | 1.0 mm | 10.0 mm | 6.0 mm | 5 mm |
| M8 | 1.25 mm | 13.0 mm | 8.0 mm | 6 mm |
| M10 | 1.5 mm | 16.0 mm | 10.0 mm | 8 mm |
| M12 | 1.75 mm | 18.0 mm | 12.0 mm | 10 mm |
| M14 | 2.0 mm | 21.0 mm | 14.0 mm | 12 mm |
| M16 | 2.0 mm | 24.0 mm | 16.0 mm | 14 mm |
| M20 | 2.5 mm | 30.0 mm | 20.0 mm | 17 mm |
| M24 | 3.0 mm | 36.0 mm | 24.0 mm | 19 mm |
Property Classes
Stainless Steel Options
| Grade | Class | Tensile Strength | Best For |
|---|---|---|---|
| A2 (18-8 / 304) | A2-70 | 101,500 PSI | General corrosion resistance, food equipment, indoor/outdoor |
| A4 (316) | A4-80 | 116,000 PSI | Marine, chemical exposure, medical, high-corrosion environments |
Common Applications
DIN 912 vs ISO 4762
💡 Are They Interchangeable?
Yes — DIN 912 and ISO 4762 are dimensionally identical and fully interchangeable for all practical applications. The standards define the same:
- Thread dimensions and tolerances
- Head diameter and height
- Socket (hex key) sizes
- Property class markings
Shop DIN 912 Socket Cap Screws
Available in Class 8.8, 10.9, 12.9, and stainless steel. Sizes M3 through M24.
Shop Socket Cap Screws