Spring Plunger Pin Body
Externally threaded spring plunger body with tapered nose for indexing.
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 |
|---|---|---|---|---|---|
| PIMB-SPL-04 | 8.1 | 17 | M4 · SW7 · taper · ⌀2.5 | 6g | spring ball tip · body bore |
| PIMB-SPL-05 | 9.2 | 20.5 | M5 · SW8 · taper · ⌀3 | 6g | spring ball tip · body bore |
| PIMB-SPL-06 | 11.5 | 23 | M6 · SW10 · taper · ⌀3.5 | 6g | spring ball tip · body bore |
| PIMB-SPL-06D | 11.5 | 25 | M6 · SW10 · ⌀3.5 | 6g | spring-loaded cylindrical thrust tip |
| PIMB-SPL-08 | 15 | 27 | M8 · SW13 · taper · ⌀4.5 | 6g | spring ball tip · body bore |
| PIMB-SPL-08D | 15 | 29 | M8 · SW13 · ⌀4.5 | 6g | spring-loaded cylindrical thrust tip |
| PIMB-SPL-10 | 19.6 | 31 | M10 · SW17 · taper · ⌀6 | 6g | spring ball tip · body bore |
| PIMB-SPL-10D | 19.6 | 33 | M10 · SW17 · ⌀6 | 6g | spring-loaded cylindrical thrust tip |
| PIMB-SPL-12 | 19.6 | 37 | M12 · SW17 · taper · ⌀7 | 6g | heavy-duty spring ball tip |
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
Spring Plunger Pin Body is a Pins family precision-turned on a Goodway SW-20, covering 9 variants — diameters ⌀8.1–19.6 mm, lengths 17–37 mm, standard material Stainless Steel (also 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 PIMB-SPL-12 at 37 mm. Besides turning, the family requires thread turning (6 sizes from M4 to M12), hex flat milling (AF 7–17), taper turning and axial drilling (⌀2.5–7 mm). 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 PIMB-SPL-05: 20.5 mm long at ⌀9.2 mm, L/D 2.2. A short, rigid body: what governs the result here is not deflection but diameter tolerance and surface finish.
Variants are machined to 6g tolerance; the smallest is PIMB-SPL-04 (⌀8.1 mm) and the largest PIMB-SPL-12 (⌀19.6 mm). The family includes threaded, hex-drive, tapered, bored, 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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