Specification summary of ISO 2936 as applied to ball-end hex keys: the dimensions the standard fixes, the full size range supplied, and the related designations commonly cross-referenced.
ISO 2936 — Scope
The table below lists the dimensions catalogued for ball-end hex keys under ISO 2936. The scope of ISO 2936 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 ISO 2936. Tolerances for this part are the limits shown against each dimension in the table.
Dimensions Specified by ISO 2936
| Key size across flats | Mating socket screw | Ball end used for | Plain end used for |
|---|---|---|---|
| 1.5 mm | M2 socket head cap screw | reaching and running down at an angle | final tightening |
| 2.0 mm | M2.5 socket head cap screw | reaching and running down at an angle | final tightening |
| 2.5 mm | M3 socket head cap screw | reaching and running down at an angle | final tightening |
| 3.0 mm | M4 socket head cap screw | reaching and running down at an angle | final tightening |
| 4.0 mm | M5 socket head cap screw | reaching and running down at an angle | final tightening |
| 5.0 mm | M6 socket head cap screw | reaching and running down at an angle | final tightening |
| 6.0 mm | M8 socket head cap screw | reaching and running down at an angle | final tightening |
| 8.0 mm | M10 socket head cap screw | reaching and running down at an angle | final tightening |
| 10.0 mm | M12 socket head cap screw | reaching and running down at an angle | final tightening |
| 14.0 mm | M16 socket head cap screw | reaching and running down at an angle | final tightening |
Equivalent Standards
Where direct equivalents exist (ISO ↔ DIN, ISO ↔ ASME), they are listed on the parent Ball-End Hex Keys page.
Always confirm against the dimensions on this page, since some "equivalent" standards differ in tolerances and head geometry.
Companion Standards
A complete specification for ball-end hex keys normally cites several documents: one for the geometry, one for the material or mechanical properties, and one for the finish. ISO 2936 is one of them, not all of them.
Custom manufacturing · Made to drawing
Need a fastener tool to this standard in a non-standard size?
Parts built to ISO 2936 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.
Minimum order from 2,000 pieces; samples within 7 days of drawing approval.
