Hex Centering Pin
Threaded centering pin with a wrench-flat hex body and cone tip for wrench-set location.
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 |
|---|---|---|---|---|---|
| PIMA-HCP-03 | 6.4 | 18 | SW5.5 · ⌀2.5 | h8 | M3 thread |
| PIMA-HCP-04 | 8.1 | 23 | SW7 | h8 · ⌀4: 0/−0.018 | — |
| PIMA-HCP-04T | 8.1 | 31 | M4 · SW7 | h8 · ⌀4: 0/−0.018 | threaded body |
| PIMA-HCP-05 | 9.2 | 28 | SW8 | h8 · ⌀5: 0/−0.018 | — |
| PIMA-HCP-05T | 9.2 | 38 | M5 · SW8 | h8 · ⌀5: 0/−0.018 | threaded body |
| PIMA-HCP-06 | 11.5 | 34 | SW10 | h8 · ⌀6: 0/−0.018 | — |
| PIMA-HCP-06T | 11.5 | 46 | M6 · SW10 | h8 · ⌀6: 0/−0.018 | threaded body |
| PIMA-HCP-08 | 15 | 42 | SW13 | h8 · ⌀8: 0/−0.022 | — |
| PIMA-HCP-08T | 15 | 54 | M8 · SW13 | h8 · ⌀8: 0/−0.022 | threaded body |
| PIMA-HCP-10 | 19.6 | 52 | SW17 | h8 · ⌀10: 0/−0.022 | — |
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
Hex Centering Pin is a Pins family precision-turned on a Goodway SW-20, covering 10 variants — diameters ⌀6.4–19.6 mm, lengths 18–54 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 PIMA-HCP-08T at 54 mm. Besides turning, the family requires thread turning (M4, M5, M6, M8), hex flat milling (AF 5.5–17) and axial drilling (⌀2.5 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 PIMA-HCP-05T: 38 mm long at ⌀9.2 mm, L/D 4.1. 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 PIMA-HCP-03 (⌀6.4 mm) and the largest PIMA-HCP-10 (⌀19.6 mm). The family includes threaded, hex-drive, 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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