GN 749 Threaded Plugs

Form

A	Seal, rubber NBR (Perbunan^^®^^)
B	Seal, rubber FPM (Viton^^®^^)

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d₁		d₁	d₂ h14	d₃	l₁	l₂	s	max .permissible operating pressure in bar	recommended torque in Nm

M 8 x 1	-	-	12	9,9	8	4	4	400	8
M 10 x 1	-	G 1/8	14	11,9	8	4	5	400	12
M 12 x 1,5	-	-	17	14,4	12	5	6	400	25
M 14 x 1,5	-	G 1/4	19	16,5	12	5	6	400	30
M 16 x 1,5	-	G 3/8	22	18,9	12	5	8	400	50
M 18 x 1,5	-	-	24	20,9	12	5	8	400	60
M 20 x 1,5	-	-	26	22,9	14	5	10	400	70
M 22 x 1,5	-	-	27	24,3	14	5	10	400	80
-	-	G 1/2	27	23,9	14	5	10	400	80
M 24 x 1,5	-	-	30	26,9	14	5	12	400	95
M 26 x 1,5	M 27 x 2	G 3/4	32	29,2	16	5	12	400	120
M 30 x 1,5	-	-	37	32,7	16	6,5	17	400	190
M 33 x 2	-	G 1	40	35,7	16	6,5	17	400	225
M 42 x 2	-	G 1 1/4	50	45,8	16	6,5	22	315	360
M 48 x 2	-	G 1 1/2	55	50,7	16	6,5	24	315	400

Filter combination produces no result.

Specification

Steel

Property class 5.8
Ultrasonically and tensile tested
Zinc plated, nano-passivated (silver / yellowish)

Type A
Temperature resistant up to 100 C
Seal, rubber NBR (Perbunan^®^^)

Type B
Temperature resistant up to 180 C
Seal, rubber FPM (Viton^®^^)
Identification by not black finish of the seal

Elastomer Characteristics

ISO Fundamental Tolerances

RoHS

Information

The dimensions of the threaded plugs GN 749 largely comply with DIN 908, and the outer diameter d₂ is adapted to the threaded holes of pipe fittings as per DIN 3852.

In deviation from the DIN specification, however, they feature an elastic seal (rubber). This sealing ring is retained in a radial undercut in the mating face which prevents it from dropping out and in particular it does not extrude when the plug is tightened.

The details relating to the permissible operating pressure are non-binding recommended values and rule out any liability. They constitute no general warranty of quality and condition. The user must determine from case to case whether a product is suitable for the intended use.

How to order