Internally Threaded Taper Pin
DIN 7978 taper pin with internal thread for extraction from blind holes.
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 8 variants.
| Code | Diameter (mm) | Length (mm) | Feature | Tolerance | Std |
|---|---|---|---|---|---|
| PIMB-TPT-06 | 6 | 30 | taper · ⌀3.3 | h10 | DIN 7978 · M4 internal thread |
| PIMB-TPT-08 | 8 | 36 | taper · ⌀4.2 | h10 | DIN 7978 · M5 internal thread |
| PIMB-TPT-10 | 10 | 45 | taper · ⌀5 | h10 | DIN 7978 · M6 internal thread |
| PIMB-TPT-12 | 12 | 55 | taper · ⌀6.8 | h10 | DIN 7978 · M8 internal thread |
| PIMB-TPT-14 | 14 | 65 | taper · ⌀8.5 | h10 | DIN 7978 · M10 internal thread |
| PIMB-TPT-16 | 16 | 75 | taper · ⌀8.5 | h10 | DIN 7978 · M10 internal thread |
| PIMB-TPT-18 | 18 | 85 | taper · ⌀10.2 | h10 | DIN 7978 · M12 internal thread |
| PIMB-TPT-20 | 20 | 95 | taper · ⌀10.2 | h10 | DIN 7978 · M12 internal thread |
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
Internally Threaded Taper Pin is a Pins family precision-turned on a Goodway SW-20, covering 8 variants — diameters ⌀6–20 mm, lengths 30–95 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 PIMB-TPT-20 at 95 mm. Besides turning, the family requires taper turning. Bores in this family run ⌀3.3–10.2 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-TPT-06: 30 mm long at ⌀6 mm, L/D 5.0. 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 h10 tolerance; the smallest is PIMB-TPT-06 (⌀6 mm) and the largest PIMB-TPT-20 (⌀20 mm). The family includes tapered, bored 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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