DIN 464 is the standard cited for knurled thumb screws, high type. This page sets out what the standard controls for this part, reproduces the dimensional table supplied against it, and notes the related designations referenced on drawings.
DIN 464 — Scope
The table below lists the dimensions catalogued for knurled thumb screws, high type under DIN 464. The scope of DIN 464 itself is not summarised here — where a figure matters, confirm it against the published document.
Tolerance & Product Grades
Product grade is a concept from dimensional fastener standards and does not apply to DIN 464. Tolerances for this part are the limits shown against each dimension in the table.
Dimensions Specified by DIN 464
| Size | Pitch (mm) | Head diameter dk (mm) | Head height k (mm) | Length l (mm) | Reference standard | Notes |
|---|---|---|---|---|---|---|
| M1.6 | 0.35 | 7.5 | 2 | 3~40 | DIN 464 | Knurled head, no drive — hand tightened |
| M2 | 0.4 | 9 | 2 | 4~40 | DIN 464 | Knurled head, no drive — hand tightened |
| M2.5 | 0.45 | 11 | 2.5 | 5~40 | DIN 464 | Knurled head, no drive — hand tightened |
| M3 | 0.5 | 12 | 2.5 | 6~40 | DIN 464 | Knurled head, no drive — hand tightened |
| M3.5 | 0.6 | 14 | 3 | 8~40 | DIN 464 | Knurled head, no drive — hand tightened |
| M4 | 0.7 | 16 | 3.5 | 8~40 | DIN 464 | Knurled head, no drive — hand tightened |
| M5 | 0.8 | 20 | 4 | 10~40 | DIN 464 | Knurled head, no drive — hand tightened |
| M6 | 1.0 | 24 | 5 | 12~40 | DIN 464 | Knurled head, no drive — hand tightened |
| M8 | 1.25 | 30 | 6 | 16~40 | DIN 464 | Knurled head, no drive — hand tightened |
| M10 | 1.5 | 36 | 8 | 20~40 | DIN 464 | Knurled head, no drive — hand tightened |
Companion Standards
A complete specification for knurled thumb screws, high type normally cites several documents: one for the geometry, one for the material or mechanical properties, and one for the finish. DIN 464 is one of them, not all of them.
When to Specify DIN 464
DIN 464 is still widely used in European mechanical engineering and as a cross-reference on legacy drawings; its ISO equivalent is preferred for new designs.
Custom manufacturing · Made to drawing
Need a screw to this standard in a non-standard size?
Parts built to DIN 464 are already in the catalog, so a special is usually a variation on existing tooling rather than a new design — which is what keeps the cost down. Made by cold heading or warm forging.
Minimum order from 2,000 pieces; samples within 7 days of drawing approval.
