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Angle Spec Table
Angle KS Specifications — 5 sizes
KS B ISO 2768-1
General tolerance table for angular dimensions per ISO 2768-1.
Practical Notes
- Angular general tolerance depends on the shorter side length. Shorter sides allow larger angular deviations.
KSAngle
5 sizes| Nom. Range | Type | f (Fine) | m (Medium) | c (Coarse) | v (Very Coarse) |
|---|---|---|---|---|---|
| 10 or less | Angle | ±1° | ±1° | ±1°30' | ±3° |
| 10~50 | Angle | ±0°30' | ±0°30' | ±1° | ±2° |
| 50~120 | Angle | ±0°20' | ±0°20' | ±0°30' | ±1° |
| 120~400 | Angle | ±0°10' | ±0°10' | ±0°15' | ±0°30' |
| 400 over | Angle | ±0°5' | ±0°5' | ±0°10' | ±0°20' |
Key Features
- KS B ISO 2768-1 angular general tolerance; ±1°–±3° range by grade
- Shorter side length allows larger angular deviation (e.g., 10 mm side ±1° vs 400 mm side ±0°10')
- Also applies to unmarked right-angle (90°) corners; managed separately from perpendicularity GD&T
Key Applications
Bracket bend angles, jig inclined surfaces, wedge angles, V-block machining, taper machining
FAQ
Why does side length matter for angular tolerance?
On short sides, angular error translates to small dimensional deviation, allowing wider tolerance. On long sides, the same angular error creates larger deviations, requiring tighter control.