Socket Head Cap Screw Dimensions
🔩 Socket Head Cap Screw Dimensions Calculator (ANSI/ASME B18.3.1M)
📘 Overview
This calculator helps engineers, designers, and manufacturers quickly find dimensional data for metric socket head cap screws in accordance with the ANSI/ASME B18.3.1M standard. By selecting a nominal thread size, users can instantly view the minimum and maximum dimensions for body diameter, head geometry, socket sizes, and more.
It is ideal for mechanical design validation, tolerance checks, and ensuring proper fit with mating hex drivers and counterbores.
📐 Dimensions Included
| Parameter | Description |
|---|---|
| D – Body Diameter | Shaft diameter of the screw excluding threads |
| A – Head Diameter | Overall diameter of the cylindrical head |
| H – Head Height | Total height of the head from base to top |
| S – Chamfer/Radius | Max chamfer or radius on head and body edge |
| J – Hex Socket Size | Width across flats for internal hex socket |
| M – Spline Socket Size | Alternative socket type (if applicable) |
| T – Key Engagement | Depth of socket for tool engagement |
| B – Transition Diameter | Diameter at transition point between head and shank |