Double-Threaded Ball Pin
Adjustable joint pin with a central ball seat and threaded studs at both ends.
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-TBP-04 | 7 | 23 | M4 | 6g | central spherical seat ⌀7 |
| MAFA-TBP-05 | 8 | 28 | M5 | 6g | central spherical seat ⌀8 |
| MAFA-TBP-06 | 10 | 33 | M6 | 6g | central spherical seat ⌀10 |
| MAFA-TBP-06H | 11.5 | 32 | M6 · SW10 | 6g | hex adjusting zone, left-hand thread one end |
| MAFA-TBP-08 | 13 | 38 | M8 | 6g | central spherical seat ⌀13 |
| MAFA-TBP-08H | 15 | 38 | M8 · SW13 | 6g | hex adjusting zone, left-hand thread one end |
| MAFA-TBP-10 | 16 | 44 | M10 | 6g | central spherical seat ⌀16 |
| MAFA-TBP-12 | 18 | 50 | M12 | 6g | central spherical seat ⌀18 |
| MAFA-TBP-10H | 19.6 | 44 | M10 · SW17 | 6g | hex adjusting zone, left-hand thread one end |
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
Double-Threaded Ball Pin is a Joint & Pivot Elements family precision-turned on a Goodway SW-20, covering 9 variants — diameters ⌀7–19.6 mm, lengths 23–50 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 ⌀20 mm bar stock; its longest variant is MAFA-TBP-12 at 50 mm. Besides turning, the family requires thread turning (6 sizes from M4 to M12) and hex flat milling (AF 10–17). 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-TBP-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 6g tolerance; the smallest is MAFA-TBP-04 (⌀7 mm) and the largest MAFA-TBP-10H (⌀19.6 mm). The family includes threaded, hex-drive, 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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