TD Forge Web Lite · Thread Designer® V3.2

All geometry annotations M12 × 1.75

Parametric geometry

Thread designation

Nominal diameter d

Thread type

Hand

Pitch P

Shank length H

Bolt thread pitches

pitches

Includes one pitch for thread runout

Shank representation Fully threaded uses ds · Partially threaded uses d

Bolt head thickness

Bolt head across flats

Bearing face diameter dw

Nut across flats

Nut thread pitches

pitches

Clamped membersOptional

0/8

Stack layers outward from the bolt head. Select a layer to edit it.

Clamped members are optional. Each layer defaults to 6 mm thick. You can edit its dimensions.

Layer thickness t

Through-hole diameter

Outside diameter D

Plate width W

Plate height B

Drag to rotate · Scroll to zoom · Right-drag to panSelect a dimension to highlight its geometry

Model information

Current joint

Designation: —
Length under head: —
Modeled nut thickness: —
Shank diameter: —
Clamped members: —

Hover over or select a dimension to highlight its geometry. Choose Clamped members on the left to add or edit layers.

Standard presets

Enter the nominal diameter and open Presets in the dimension annotation. You can edit any preset value afterward.

Preset selection and nut thickness adjustment

Hex head width across flats and thickness follow ISO 4014 / GB/T 5782. The bearing face diameter follows GB/T 5780. Standard hex nut width across flats and maximum thickness follow ISO 4032 / GB/T 6170.

M thread pitch follows ISO 261. MJ sizes and pitches follow ISO 5855-2. Presets contain 18 head and nut size combinations. Enter other combinations manually.

The nut uses a positive whole number of pitches, rounded to the standard thickness with half pitches rounded up. Both nominal and modeled nut thicknesses are retained. Presets set the bolt to 9 pitches, including one for runout. You can change this setting. The current shank length is retained.

Mesh simplification

To limit the element count, only the specified number of pitches is modeled as thread. The rest of the shank is represented as a cylinder.

A fully threaded bolt uses the equivalent thread diameter ds. A partially threaded bolt uses the plain shank diameter d.

M threads use 16 layers per pitch. MJ threads use 32. Each clamped member uses 1,152 hexahedral elements. Up to 8 members are supported, with separate nodes for each.

Optional clamped members stack from the bolt bearing face. In Assembly, choose the clamped member thickness or enter a target grip length. Select Assemble nut to move and rotate the nut. Editing layers keeps the nut in place. The through-hole diameter must be at least the nominal bolt diameter. Set contact, loads and analysis steps in your solver.

Mesh quality

After generation, inspect the mesh and element quality, then download the INP model and quality report.

Nodes: —
Hexahedral elements: —
Minimum element quality: —
Maximum edge ratio: —

Actions

F Fit to view · Ctrl+Z Undo
Enter Confirm dimension · Esc Exit editing
The geometry is a lightweight preview. The generated mesh matches the INP export.

V3.2 Web

Generating mesh

Dimensions

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