Knurled Micro Shaft
Precision micro shaft with a knurled section for press-fit grip.
This is a dimension schematic, not a manufacturing drawing. Dimensions match the catalog data; request a quote with the part code to confirm before production.
Code & Size Table
Code, dimensions and tolerance for all 10 variants.
| Code | Diameter (mm) | Length (mm) | Feature | Tolerance | Std |
|---|---|---|---|---|---|
| MIKA-KNS-15 | 1.5 | 18 | knurl · 2 steps | h9 | — |
| MIKA-KNS-20 | 2 | 20 | knurl · 2 steps | h9 | — |
| MIKA-KNS-25 | 2.5 | 24 | knurl · 2 steps | h9 | — |
| MIKA-KNS-30 | 3 | 28 | knurl · 2 steps | h9 | — |
| MIKA-KNS-32 | 3 | 28 | knurl · 2 steps | h9 | — |
| MIKA-KNS-35 | 3.5 | 32 | knurl · 2 steps | h9 · ⌀3.5: 0/−0.030 | — |
| MIKA-KNS-40 | 4 | 38 | knurl · 2 steps | h9 · ⌀4: 0/−0.030 | — |
| MIKA-KNS-45 | 4.5 | 42 | knurl · 2 steps | h9 · ⌀4.5: 0/−0.030 | — |
| MIKA-KNS-50 | 5 | 48 | knurl · 2 steps | h9 · ⌀5: 0/−0.030 | — |
| MIKA-KNS-60 | 6 | 54 | knurl · 2 steps | h9 · ⌀6: 0/−0.030 | — |
Prices are for approved members.
Material & Tolerance
The standard material is listed below; also available in steel, stainless, brass and aluminium. Dimensions in mm; tolerances machined to ISO. Deviations (mm) are given for the nominal diameter according to the ISO 286-2 tables; thread tolerances (6g/6H) are to ISO 965. For custom sizes/tolerances, contact us with the part code.
Manufacturing Scope
Knurled Micro Shaft is a Micro & Watch Parts family precision-turned on a Goodway SW-20, covering 10 variants — diameters ⌀1.5–6 mm, lengths 18–54 mm, standard material Brass (also steel, stainless steel or aluminium). Every variant's part code, dimension and tolerance is listed below; request a quote with the code you need.
The family is machined from ⌀6 mm bar stock; its longest variant is MIKA-KNS-60 at 54 mm. Besides turning, the family requires knurling. All of it is completed in a single setup, without the part leaving the machine.
The most slender variant is MIKA-KNS-15: 18 mm long at ⌀1.5 mm, a length-to-diameter ratio of 12.0. This ratio is the very reason sliding-head lathes exist. The guide bushing supports the bar immediately beside the cutting point, so there is no deflection; the same part chatters and drifts in diameter on a conventional lathe.
Variants are machined to h9 tolerance; the smallest is MIKA-KNS-15 (⌀1.5 mm) and the largest MIKA-KNS-60 (⌀6 mm). The family includes knurled, multi-step variants. Custom sizes, tolerances or materials are produced to the part code on request.
Need a size that isn't listed? We machine to your drawing — CNC contract machining. How these parts are made: What is a Swiss-type lathe?
Other Families in This Category
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