R 1-1/2 Pipe Plug, DIN 906
A 20 mm long R 1-1/2 pipe plug (DIN 906) that sits flush in a tapered port, turned with a 24 mm hex key in a socket at least 11.5 mm deep. It comes in simplified and threaded STEP files.

How these parts are made, and what the levels mean: read the method
- Also searched as: R 1-1/2 pipe plug
- Model id:
din906-r1-1-2
- Standard: DIN 906:2020-02 · R 1-1/2, pitch 2.309 mm, R taper pipe thread (ISO 7-1), 55 degree profile, 1:16 taper, right hand
Files
| Part key | Simplified | Threaded |
|---|
din906-r1-1-2 | STEP | STEP |
Dimensions

| Symbol | Name | min | nom | max | Modeled | Rule | Level |
|---|
| L | Length | | 20 | | 20 | nominal | L1 |
| s | Socket width across flats | 24.065 | 24 | 24.275 | 24.17 | midpoint of min–max | L0 (min, max: one source) |
| t1 | Socket depth | 11.5 | | | 11.5 | single limit (min), modeled at the limit | L1 |
| n | Threads per inch | | 11 | | 11 | nominal | L2 |
| P | Pitch | | 2.309 | | 2.309 | nominal | L2 |
| h | Thread height | | 1.479 | | 1.479 | nominal | L2 |
| d | Major diameter (gauge diameter) | | 47.803 | | 47.803 | nominal | L2 |
| d2 | Pitch diameter | | 46.324 | | 46.324 | nominal | L2 |
| d1 | Minor diameter | | 44.845 | | 44.845 | nominal | L2 |
| a | Gauge length | | 12.7 | | 12.7 | nominal | L1 |
| alpha | Flank angle | | 55 | | 55 | nominal | L1 |
| taper | Taper | | 16 | | 16 | nominal | L1 |
Drawing

As a PDF: CC-DIN906-SZ-1-1-2.pdf.
The R 1-1/2 pipe plug beside the R 1-1/4
The R 1-1/2 is the last of the 8 DIN 906 pipe plugs published here, listed from R 1/8 to R 1-1/2.
- Length (L): 20 mm on the R 1-1/2 pipe plug, against 18 mm on the R 1-1/4.
- Socket width across flats (s): 24 mm on the R 1-1/2 pipe plug, against 22 mm on the R 1-1/4.
- Socket depth (t1): at least 11.5 mm on the R 1-1/2 pipe plug, the same on the R 1-1/4.
- Threads per inch (n): 11 mm on the R 1-1/2 pipe plug, the same on the R 1-1/4.
- Pitch (P): 2.309 mm on the R 1-1/2 pipe plug, the same on the R 1-1/4.
- Thread height (h): 1.479 mm on the R 1-1/2 pipe plug, the same on the R 1-1/4.
- Major diameter (gauge diameter) (d): 47.803 mm on the R 1-1/2 pipe plug, against 41.91 mm on the R 1-1/4.
- Pitch diameter (d2): 46.324 mm on the R 1-1/2 pipe plug, against 40.431 mm on the R 1-1/4.
Other sizes
Documents
Sources
etb-iso7-1, fasten-it-din906, gewinde-normen-bspt, iso228-1-2000-sample, torqbolt-din906, wikipedia-bsp. Full citations: the method page and this size's datasheet.
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