Din 76a Pdf [ 2024 ]

| Thread Size (M) | Pitch (P) | Undercut Width (a) | Undercut Diameter (d₂) | | :--- | :--- | :--- | :--- | | M3 | 0.5 | 0.8 mm | 2.2 mm | | M6 | 1.0 | 1.6 mm | 4.6 mm | | M10 | 1.5 | 2.5 mm | 8.0 mm | | M20 | 2.5 | 4.0 mm | 17.0 mm |

The actual dimensions vary based on the pitch of the thread. According to technical summaries often found in a DIN 76-1 PDF , standard values include: Metric Pitch ( Undercut Width (Normal/Form A) Undercut Diameter Where to Find the Official PDF din 76a pdf

These are the international equivalents upon which DIN 76-1 is based. The primary reference for metric thread profiles. | Thread Size (M) | Pitch (P) |

When a bolt is threaded, the tool cannot cut a perfect thread all the way to a shoulder or head. DIN 76 Form A defines the specific "relief" or "undercut" area required to allow a mating part (like a nut or a plate) to sit flush against the shoulder without being blocked by the incomplete threads at the end of the shank. Key Technical Specifications When a bolt is threaded, the tool cannot

All dimensions are in millimetres. * Scope. This standard specifies dimensions for thread run-outs and thread undercuts for bolts,

You can find detailed documentation and technical diagrams for this standard on several platforms: Standard Previews