Aluminum
Threaded Plugs
With Finger Grip, With NBR Seal

GN 441

 

 

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Specification
Information

Body: Aluminum, tumbled matte finish or black plastic coated finish
Seal: NBR synthetic rubber (Perbunan)
Available with or without vent hole

Shipping

GN 441 threaded plugs have an external diameter d1 matching the screw-in holes for DIN 3852 pipe bolt connections.
The seal is embedded in a radial recess on the plane side, which makes the seal captive, so it cannot be squeezed out during tightening. The seal is also relatively soft, enhancing the sealing effect even on uneven surfaces.
Threaded plugs with dipstick available upon request.
NBR seal: maximum heat resistance: 120°C (250°F).
For version with VITON® seal, see GN 442.

See our Technical Section for pipe thread size details.
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Metric Thread Table

Dimensions in:

millimeters
(inches)

Part Number d1 d2
Thread
d3
Vent
Hole
d4
Internal
Thread
l1
+/- .5 mm
l2 l3 s t min.
Tumbled Finish Black Plastic Finish
With Vent Without Vent

With Vent

Without Vent
441-22-M16X1,5-2-BL
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441-22-M16X1,5-1-BL
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441-22-M16X1,5-2-SW
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441-22-M16X1,5-1-SW
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22
(.87)
M16 x 1.5  2
(.08)
M5  x .8 26
(1.02)
8
(.31)
15
(.59)
5
(.20)
8
(.31)
441-26-M20X1,5-2-BL
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441-26-M20X1,5-1-BL
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441-26-M20X1,5-2-SW
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441-26-M20X1,5-1-SW
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26
(1.02)
M20 x 1.5  2
(.08)
M5  x .8 27.5
(1.08)
8.5
(.33)
16
(.63)
5
(.20)
8
(.31)
441-32-M26X1,5-2-BL
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441-32-M26X1,5-1-BL
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441-32-M26X1,5-2-SW
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441-32-M26X1,5-1-SW
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32
(1.26)
M26 x 1.5  2
(.08)
M5  x .8 29
(1.14)
9
(.35)
17
(.67)
6
(.24)
8
(.31)
BSPP Parallel Thread Table

Dimensions in:

millimeters
(inches)

Part Number d1 d2
Thread
d3
Vent
Hole
d4
Internal
Thread
l1
+/- .5 mm
l2 l3 s t min.
Tumbled Finish Black Plastic Finish
With Vent Without Vent

With Vent

Without Vent
441-22-G3/8-2-BL
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441-22-G3/8-1-BL
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441-22-G3/8-2-SW
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441-22-G3/8-1-SW
Download the CAD
22
(.87)
G 3/8"  2
(.08)
M5  x .8 26
(1.02)
8
(.31)
15
(.59)
5
(.20)
8
(.31)
441-26-G1/2-2-BL
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441-26-G1/2-1-BL
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441-26-G1/2-2-SW
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441-26-G1/2-1-SW
Download the CAD
26
(1.02)
G 1/2"  2
(.08)
M5  x .8 27.5
(1.08)
8.5
(.33)
16
(.63)
5
(.20)
8
(.31)
441-32-G3/4-2-BL
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441-32-G3/4-1-BL
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441-32-G3/4-2-SW
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441-32-G3/4-1-SW
Download the CAD
32
(1.26)
G 3/4"  2
(.08)
M5  x .8 29
(1.14)
9
(.35)
17
(.67)
6
(.24)
8
(.31)
441-40-G1-2-BL
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441-40-G1-1-BL
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441-40-G1-2-SW
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441-40-G1-1-SW
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40
(1.57)
G 1"  2
(.08)
M5  x .8 32.5
(1.28)
11
(.43)
18
(.71)
7
(.28)
8
(.31)