Aluminum
Fill / Drain Plugs
With "DIN" Fill and Drain Symbols, with NBR Seal, with or without Air Vent Hole

GN 741

 

RoHS Compliant

 

This line drawing is movable on the page...just click and drag!
Specification
Information

Body:
Aluminum, fine turned, matte shot-blast finish, or
Aluminum, fine turned, black anodized finish
Symbols laser engraved  
Seal: NBR synthetic rubber
Offered with or without air vent hole

Shipping

The seal is retained in a groove undercut in the mating face, which prevents it from dropping out and from extruding when the plug is tightened. For this reason the seal can be of a softer material which offers better sealing.
Maximum heat resistance: 100°C (212°F).

See our Technical Section for pipe thread size details.
CLICK ON PART NUMBER FOR PRICE (and option to add to cart)
For CAD download instructions, click
HERE
Metric Thread Table, without Air Vent Hole

Dimensions in:

millimeters
(inches)

Part Number d1 d2
Thread
d3
Vent
Hole
d4
Dip-stick
Thread
l1 l2 l3 s e
Plain Finish Black Anodized Finish
Plain With
Fill
Symbol
With
Drain
Symbol
Plain With
Fill
Symbol
With
Drain
Symbol
741-19-M14X1,5-OS-1
Download the CAD
741-19-M14X1,5-ES-1
Download the CAD
741-19-M14X1,5-AS-1
Download the CAD
741-19-M14X1,5-OSS-1
Download the CAD
741-19-M14X1,5-ESS-1
Download the CAD
741-19-M14X1,5-ASS-1
Download the CAD
19
(.75)
M14 x 1.5 2
(.08)
M5  x .8 15.5
(.61)
8
(.31)
8
(.31)
15
(.59)
17.3
(.68)
741-22-M16X1,5-OS-1
Download the CAD
741-22-M16X1,5-ES-1
Download the CAD
741-22-M16X1,5-AS-1
Download the CAD
741-22-M16X1,5-OSS-1
Download the CAD
741-22-M16X1,5-ESS-1
Download the CAD
741-22-M16X1,5-ASS-1
Download the CAD
22
(.87)
M16 x 1.5  2
(.08)
M5  x .8 15.5
(.61)
8
(.31)
8
(.31)
18
(.71)
20.8
(.82)
741-26-M20X1,5-OS-1
Download the CAD
741-26-M20X1,5-ES-1
Download the CAD
741-26-M20X1,5-AS-1
Download the CAD
741-26-M20X1,5-OSS-1
Download the CAD
741-26-M20X1,5-ESS-1
Download the CAD
741-26-M20X1,5-ASS-1
Download the CAD
26
(1.02)
M20 x 1.5 2
(.08)
M5  x .8 16
(.63)
8.5
(.33)
8
(.31)

21
(.83)

24.3
(.96)
741-32-M26X1,5-OS-1
Download the CAD
741-32-M26X1,5-ES-1
Download the CAD
741-32-M26X1,5-AS-1
Download the CAD
741-32-M26X1,5-OSS-1
Download the CAD
741-32-M26X1,5-ESS-1
Download the CAD
741-32-M26X1,5-ASS-1
Download the CAD
32
(1.26)
M26 x 1.5 2
(.08)
M5  x .8 17
(.67)
9
(.35)
8
(.31)
27
(1.06)
31.3
(1.23)
741-32-M27X1,5-OS-1
Download the CAD
741-32-M27X1,5-ES-1
Download the CAD
741-32-M27X1,5-AS-1
Download the CAD
741-32-M27X1,5-OSS-1
Download the CAD
741-32-M27X1,5-ESS-1
Download the CAD
741-32-M27X1,5-ASS-1
Download the CAD
32
(1.26)
M27 x 1.5 2
(.08)
M5  x .8 17
(.67)
9
(.35)
8
(.31)
27
(1.06)
31.2
(1.23)
741-40-M33X1,5-OS-1
Download the CAD
741-40-M33X1,5-ES-1
Download the CAD
741-40-M33X1,5-AS-1
Download the CAD
741-40-M33X1,5-OSS-1
Download the CAD
741-40-M33X1,5-ESS-1
Download the CAD
741-40-M33X1,5-ASS-1
Download the CAD
40
(1.57)
M33 x 1.5 2
(.08)
M5  x .8 19.5
(.77)
11
(.43)
8
(.31)
32
(1.26)
37
(1.46)
741-50-M40X1,5-OS-1
Download the CAD
741-50-M40X1,5-ES-1
Download the CAD
741-50-M40X1,5-AS-1
Download the CAD
741-50-M40X1,5-OSS-1
Download the CAD
741-50-M40X1,5-ESS-1
Download the CAD
741-50-M40X1,5-ASS-1
Download the CAD
50
(1.97)
M40 x 1.5 2
(.08)
M5  x .8 21
(.83)
12
(.47)
8
(.31)
41
(1.61)
47.3
(1.86)
741-50-M42X1,5-OS-1
Download the CAD
741-50-M42X1,5-ES-1
Download the CAD
741-50-M42X1,5-AS-1
Download the CAD
741-50-M42X1,5-OSS-1
Download the CAD
741-50-M42X1,5-ESS-1
Download the CAD
741-50-M42X1,5-ASS-1
Download the CAD
50
(1.97)
M42 x 1.5 2
(.08)
M5  x .8 21
(.83)
12
(.47)
8
(.31)
41
(1.61)
47.3
(1.86)
741-50-M42X2-OS-1
Download the CAD
741-50-M42X2-ES-1
Download the CAD
741-50-M42X2-AS-1
Download the CAD
741-50-M42X2-OSS-1
Download the CAD
741-50-M42X2-ESS-1
Download the CAD
741-50-M42X2-ASS-1
Download the CAD
50
(1.97)
M42 x 2.0 2
(.08)
M5  x .8 21
(.83)
12
(.47)
8
(.31)
41
(1.61)
47.3
(1.86)
 
Metric Thread Table, with Air Vent Hole

Dimensions in:

millimeters
(inches)

Part Number d1 d2
Thread
d3
Vent
Hole
d4
Dip-stick
Thread
l1 l2 l3 s e ˜
Plain Finish Black Anodized Finish
Plain With
Fill
Symbol
With
Drain
Symbol
Plain With
Fill
Symbol
With
Drain
Symbol
741-19-M14X1,5-OS-2
Download the CAD
741-19-M14X1,5-ES-2
Download the CAD
741-19-M14X1,5-AS-2
Download the CAD
741-19-M14X1,5-OSS-2
Download the CAD
741-19-M14X1,5-ESS-2
Download the CAD
741-19-M14X1,5-ASS-2
Download the CAD
19
(.75)
M14 x 1.5 2
(.08)
M5  x .8 15.5
(.61)
8
(.31)
8
(.31)
15
(.59)
17.3
(.68)
741-22-M16X1,5-OS-2
Download the CAD
741-22-M16X1,5-ES-2
Download the CAD
741-22-M16X1,5-AS-2
Download the CAD
741-22-M16X1,5-OSS-2
Download the CAD
741-22-M16X1,5-ESS-2
Download the CAD
741-22-M16X1,5-ASS-2
Download the CAD
22
(.87)
M16 x 1.5  2
(.08)
M5  x .8 15.5
(.61)
8
(.31)
8
(.31)
18
(.71)
20.8
(.82)
741-26-M20X1,5-OS-2
Download the CAD
741-26-M20X1,5-ES-2
Download the CAD
741-26-M20X1,5-AS-2
Download the CAD
741-26-M20X1,5-OSS-2
Download the CAD
741-26-M20X1,5-ESS-2
Download the CAD
741-26-M20X1,5-ASS-2
Download the CAD
26
(1.02)
M20 x 1.5 2
(.08)
M5  x .8 16
(.63)
8.5
(.33)
8
(.31)

21
(.83)

24.3
(.96)
741-32-M26X1,5-OS-2
Download the CAD
741-32-M26X1,5-ES-2
Download the CAD
741-32-M26X1,5-AS-2
Download the CAD
741-32-M26X1,5-OSS-2
Download the CAD
741-32-M26X1,5-ESS-2
Download the CAD
741-32-M26X1,5-ASS-2
Download the CAD
32
(1.26)
M26 x 1.5 2
(.08)
M5  x .8 17
(.67)
9
(.35)
8
(.31)
27
(1.06)
31.3
(1.23)
741-32-M27X1,5-OS-2
Download the CAD
741-32-M27X1,5-ES-2
Download the CAD
741-32-M27X1,5-AS-2
Download the CAD
741-32-M27X1,5-OSS-2
Download the CAD
741-32-M27X1,5-ESS-2
Download the CAD
741-32-M27X1,5-ASS-2
Download the CAD
32
(1.26)
M27 x 1.5 2
(.08)
M5  x .8 17
(.67)
9
(.35)
8
(.31)
27
(1.06)
31.2
(1.23)
741-40-M33X1,5-OS-2
Download the CAD
741-40-M33X1,5-ES-2
Download the CAD
741-40-M33X1,5-AS-2
Download the CAD
741-40-M33X1,5-OSS-2
Download the CAD
741-40-M33X1,5-ESS-2
Download the CAD
741-40-M33X1,5-ASS-2
Download the CAD
40
(1.57)
M33 x 1.5 2
(.08)
M5  x .8 19.5
(.77)
11
(.43)
8
(.31)
32
(1.26)
37
(1.46)
741-50-M40X1,5-OS-2
Download the CAD
741-50-M40X1,5-ES-2
Download the CAD
741-50-M40X1,5-AS-2
Download the CAD
741-50-M40X1,5-OSS-2
Download the CAD
741-50-M40X1,5-ESS-2
Download the CAD
741-50-M40X1,5-ASS-2
Download the CAD
50
(1.97)
M40 x 1.5 2
(.08)
M5  x .8 21
(.83)
12
(.47)
8
(.31)
41
(1.61)
47.3
(1.86)
741-50-M42X1,5-OS-2
Download the CAD
741-50-M42X1,5-ES-2
Download the CAD
741-50-M42X1,5-AS-2
Download the CAD
741-50-M42X1,5-OSS-2
Download the CAD
741-50-M42X1,5-ESS-2
Download the CAD
741-50-M42X1,5-ASS-2
Download the CAD
50
(1.97)
M42 x 1.5 2
(.08)
M5  x .8 21
(.83)
12
(.47)
8
(.31)
41
(1.61)
47.3
(1.86)
741-50-M42X2-OS-2
Download the CAD
741-50-M42X2-ES-2
Download the CAD
741-50-M42X2-AS-2
Download the CAD
741-50-M42X2-OSS-2
Download the CAD
741-50-M42X2-ESS-2
Download the CAD
741-50-M42X2-ASS-2
Download the CAD
50
(1.97)
M42 x 2.0 2
(.08)
M5  x .8 21
(.83)
12
(.47)
8
(.31)
41
(1.61)
47.3
(1.86)
 
BSPP Parallel Thread Table, without Air Vent Hole

Dimensions in:

millimeters
(inches)

Part Number d1 d2
Pipe
Thread
d3
Vent
Hole
d4
Dip- stick
Thread
l1 l2 l3 s e ˜
Plain Finish Black Anodized Finish
Plain With
Fill
Symbol
With
Drain
Symbol
Plain With
Fill
Symbol
With
Drain
Symbol
741-19-G1/4-OS-1
Download the CAD
741-19-G1/4-ES-1
Download the CAD
741-19-G1/4-AS-1
Download the CAD
741-19-G1/4-OSS-1
Download the CAD
741-19-G1/4-ESS-1
Download the CAD
741-19-G1/4-ASS-1
Download the CAD
19
(.75)
G 1/4" 2
(.08)
M5  x .8 15.5
(.61)
8
(.31)
8
(.31)
15
(.59)
17.3
(.68)
741-22-G3/8-OS-1
Download the CAD
741-22-G3/8-ES-1
Download the CAD
741-22-G3/8-AS-1
Download the CAD
741-22-G3/8-OSS-1
Download the CAD
741-22-G3/8-ESS-1
Download the CAD
741-22-G3/8-ASS-1
Download the CAD
22
(.87)
G 3/8"  2
(.08)
M5  x .8 15.5
(.61)
8
(.31)
8
(.31)
18
(.71)
20.8
(.82)
741-26-G1/2-OS-1
Download the CAD
741-26-G1/2-ES-1
Download the CAD
741-26-G1/2-AS-1
Download the CAD
741-26-G1/2-OSS-1
Download the CAD
741-26-G1/2-ESS-1
Download the CAD
741-26-G1/2-ASS-1
Download the CAD
26
(1.02)
G 1/2"  2
(.08)
M5  x .8 16
(.63)
8.5
(.33)
8
(.31)

21
(.83)

24.3
(.96)
741-32-G3/4-OS-1
Download the CAD
741-32-G3/4-ES-1
Download the CAD
741-32-G3/4-AS-1
Download the CAD
741-32-G3/4-OSS-1
Download the CAD
741-32-G3/4-ESS-1
Download the CAD
741-32-G3/4-ASS-1
Download the CAD
32
(1.26)
G 3/4"  2
(.08)
M5  x .8 17
(.67)
9
(.35)

8
(.31)

27
(1.06)
31.2
(1.23)
741-40-G1-OS-1
Download the CAD
741-40-G1-ES-1
Download the CAD
741-40-G1-AS-1
Download the CAD
741-40-G1-OSS-1
Download the CAD
741-40-G1-ESS-1
Download the CAD
741-40-G1-ASS-1
Download the CAD
40
(1.57)
G 1" 2
(.08)
M5  x .8 19.5
(.77)
11
(.43)
8
(.31)
32
(1.26)
37
(1.46)
741-50-G11/4-OS-1
Download the CAD
741-50-G11/4-ES-1
Download the CAD
741-50-G11/4-AS-1
Download the CAD
741-50-G11/4-OSS-1
Download the CAD
741-50-G11/4-ESS-1
Download the CAD
741-50-G11/4-ASS-1
Download the CAD
50
(1.97)
G 1 1/4" 2
(.08)
M5  x .8 21
(.83)
12
(.47)
8
(.31)
41
(1.61)
47.3
(1.86)
741-60-G11/2-OS-1
Download the CAD
741-60-G11/2-ES-1
Download the CAD
741-60-G11/2-AS-1
Download the CAD
741-60-G11/2-OSS-1
Download the CAD
741-60-G11/2-ESS-1
Download the CAD
741-60-G11/2-ASS-1
Download the CAD
60
(2.36)
G 1 1/2" 2
(.08)
M5  x .8 22
(.87)
13
(.51)
8
(.31)
50
(1.97)
57.7
(2.27)
 
BSPP Parallel Thread Table, with Air Vent Hole

Dimensions in:

millimeters
(inches)

Part Number d1 d2
Pipe
Thread
d3
Vent
Hole
d4
Dip- stick
Thread
l1 l2 l3 s e
Plain Finish Black Anodized Finish
Plain With
Fill
Symbol
With
Drain
Symbol
Plain With
Fill
Symbol
With
Drain
Symbol
741-19-G1/4-OS-2
Download the CAD
741-19-G1/4-ES-2
Download the CAD
741-19-G1/4-AS-2
Download the CAD
741-19-G1/4-OSS-2
Download the CAD
741-19-G1/4-ESS-2
Download the CAD
741-19-G1/4-ASS-2
Download the CAD
19
(.75)
G 1/4" 2
(.08)
M5  x .8 15.5
(.61)
8
(.31)
8
(.31)
15
(.59)
17.3
(.68)
741-22-G3/8-OS-2
Download the CAD
741-22-G3/8-ES-2
Download the CAD
741-22-G3/8-AS-2
Download the CAD
741-22-G3/8-OSS-2
Download the CAD
741-22-G3/8-ESS-2
Download the CAD
741-22-G3/8-ASS-2
Download the CAD
22
(.87)
G 3/8"  2
(.08)
M5  x .8 15.5
(.61)
8
(.31)
8
(.31)
18
(.71)
20.8
(.82)
741-26-G1/2-OS-2
Download the CAD
741-26-G1/2-ES-2
Download the CAD
741-26-G1/2-AS-2
Download the CAD
741-26-G1/2-OSS-2
Download the CAD
741-26-G1/2-ESS-2
Download the CAD
741-26-G1/2-ASS-2
Download the CAD
26
(1.02)
G 1/2"  2
(.08)
M5  x .8 16
(.63)
8.5
(.33)
8
(.31)

21
(.83)

24.3
(.96)
741-32-G3/4-OS-2
Download the CAD
741-32-G3/4-ES-2
Download the CAD
741-32-G3/4-AS-2
Download the CAD
741-32-G3/4-OSS-2
Download the CAD
741-32-G3/4-ESS-2
Download the CAD
741-32-G3/4-ASS-2
Download the CAD
32
(1.26)
G 3/4"  2
(.08)
M5  x .8 17
(.67)
9
(.35)

8
(.31)

27
(1.06)
31.2
(1.23)
741-40-G1-OS-2
Download the CAD
741-40-G1-ES-2
Download the CAD
741-40-G1-AS-2
Download the CAD
741-40-G1-OSS-2
Download the CAD
741-40-G1-ESS-2
Download the CAD
741-40-G1-ASS-2
Download the CAD
40
(1.57)
G 1" 2
(.08)
M5  x .8 19.5
(.77)
11
(.43)
8
(.31)
32
(1.26)
37
(1.46)
741-50-G11/4-OS-2
Download the CAD
741-50-G11/4-ES-2
Download the CAD
741-50-G11/4-AS-2
Download the CAD
741-50-G11/4-OSS-2
Download the CAD
741-50-G11/4-ESS-2
Download the CAD
741-50-G11/4-ASS-2
Download the CAD
50
(1.97)
G 1 1/4" 2
(.08)
M5  x .8 21
(.83)
12
(.47)
8
(.31)
41
(1.61)
47.3
(1.86)
741-60-G11/2-OS-2
Download the CAD
741-60-G11/2-ES-2
Download the CAD
741-60-G11/2-AS-2
Download the CAD
741-60-G11/2-OSS-2
Download the CAD
741-60-G11/2-ESS-2
Download the CAD
741-60-G11/2-ASS-2
Download the CAD
60
(2.36)
G 1 1/2" 2
(.08)
M5  x .8 22
(.87)
13
(.51)
8
(.31)
50
(1.97)
57.7
(2.27)