R 1-1/4 Pipe Plug, DIN 906

The R 1-1/4 pipe plug (DIN 906) closes a tapered R 1-1/4 port with a 22 mm hex key: 18 mm long, the socket at least 11.5 mm deep. Available as simplified and threaded STEP files.

How these parts are made, and what the levels mean: read the method

• Also searched as: R 1-1/4 pipe plug
• Model id: din906-r1-1-4
• Standard: DIN 906:2020-02 · R 1-1/4, 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-r1-1-4	STEP	STEP

Dimensions

Symbol	Name	min	nom	max	Modeled	Rule	Level
L	Length		18		18	nominal	L1
s	Socket width across flats	22.065	22	22.275	22.17	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)		41.91		41.91	nominal	L2
d2	Pitch diameter		40.431		40.431	nominal	L2
d1	Minor diameter		38.952		38.952	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-1-1-4.pdf.

The R 1-1/4 pipe plug beside the R 1 and the R 1-1/2

The R 1-1/4 is number 7 of the 8 DIN 906 pipe plugs published here, listed from R 1/8 to R 1-1/2.

• Length (L): 18 mm on the R 1-1/4 pipe plug, against 12 mm on the R 1 and 20 mm on the R 1-1/2.
• Socket width across flats (s): 22 mm on the R 1-1/4 pipe plug, against 17 mm on the R 1 and 24 mm on the R 1-1/2.
• Socket depth (t1): at least 11.5 mm on the R 1-1/4 pipe plug, against at least 6 mm on the R 1 and at least 11.5 mm on the R 1-1/2.
• Threads per inch (n): 11 mm on the R 1-1/4 pipe plug, the same on the R 1 and the R 1-1/2.
• Pitch (P): 2.309 mm on the R 1-1/4 pipe plug, the same on the R 1 and the R 1-1/2.
• Thread height (h): 1.479 mm on the R 1-1/4 pipe plug, the same on the R 1 and the R 1-1/2.
• Major diameter (gauge diameter) (d): 41.91 mm on the R 1-1/4 pipe plug, against 33.249 mm on the R 1 and 47.803 mm on the R 1-1/2.
• Pitch diameter (d2): 40.431 mm on the R 1-1/4 pipe plug, against 31.77 mm on the R 1 and 46.324 mm on the R 1-1/2.

Other sizes

• One size smaller: R 1 Pipe Plug, DIN 906, 17 mm hex key, length 12 mm.
• One size larger: R 1-1/2 Pipe Plug, DIN 906, 24 mm hex key, length 20 mm.

Documents

• CC-DIN906-DS-R1-1-4.pdf: 1-1/4 datasheet: values with levels, sources
• CC-DIN906-SZ-1-1-4.pdf: 1-1/4 drawing: this size's values on the views
• parts.json: the part record of this size (the platform contract)

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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