Ball Stud
Ball-headed stud with necked threaded body seating into a ball joint socket.
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 9 variants.
| Code | Diameter (mm) | Length (mm) | Feature | Tolerance | Std |
|---|---|---|---|---|---|
| MAFA-BLS-05 | 8 | 28 | M5 · taper | h8 | spherical head ⌀8 |
| MAFA-BLS-06 | 10 | 33 | M6 · taper | h8 | spherical head ⌀10 |
| MAFA-BLS-06H | 11.5 | 30 | M6 · SW10 | h8 · ⌀10: 0/−0.022 | ball stud with spanner flats |
| MAFA-BLS-07 | 12 | 36 | M6 · taper | h8 | spherical head ⌀12 |
| MAFA-BLS-08 | 13 | 40 | M8 · taper | h8 | spherical head ⌀13 |
| MAFA-BLS-10 | 14 | 42 | M8 · taper | h8 | spherical head ⌀14 |
| MAFA-BLS-12 | 16 | 47 | M10 · taper | h8 · ⌀16: 0/−0.027 | spherical head ⌀16 |
| MAFA-BLS-13 | 18 | 52 | M12 · taper | h8 · ⌀18: 0/−0.027 | spherical head ⌀18 |
| MAFA-BLS-14 | 20 | 55 | M12 · taper | h8 | spherical head ⌀20 max |
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
Ball Stud is a Joint & Pivot Elements family precision-turned on a Goodway SW-20, covering 9 variants — diameters ⌀8–20 mm, lengths 28–55 mm, standard material Steel (also stainless steel, brass 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 ⌀20 mm bar stock; its longest variant is MAFA-BLS-14 at 55 mm. Besides turning, the family requires thread turning (5 sizes from M5 to M12), hex flat milling (AF 10) and taper turning. All of it is completed in a single setup, without the part leaving the machine.
The variant with the highest length-to-diameter ratio is MAFA-BLS-05: 28 mm long at ⌀8 mm, L/D 3.5. This ratio is achievable on a conventional lathe as well; the sliding-head advantage in series work is that the part never leaves the machine, so the size does not drift from variant to variant.
Variants are machined to h8 tolerance; the smallest is MAFA-BLS-05 (⌀8 mm) and the largest MAFA-BLS-14 (⌀20 mm). The family includes threaded, hex-drive, tapered, 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?
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