Aluminum
Fill / Drain Plugs
Plain or with "DIN" Fill or Drain Symbols, with Viton Seal, with or without Air Vent Hole

GN 742

RoHS Compliant
 

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Specification
Information

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

Shipping

GN 742 fill/drain plugs are fitted with outside diameter d1 to fit screw holes with BSP threads included in DIN 3852.
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: 180°C (356°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 Pipe Thread Table, without Vent Hole

Dimensions in:

millimeters
(inches)

Part Number d1 d2
Thread
d4
Dipstick
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
742-19-M14X1.5-OS-1
Download the CAD
742-19-M14X1.5-ES-1
Download the CAD
742-19-M14X1.5-AS-1
Download the CAD
742-19-M14X1.5-OSS-1
Download the CAD
742-19-M14X1.5-ESS-1
Download the CAD
742-19-M14X1.5-ASS-1
Download the CAD
19
(.75)
M14 x 1.5 M5  x .8 15.5
(.61)
8
(.31)
8
(.31)
15
(.59)
17.3
(.68)
742-19-M16X1.5-OS-1
Download the CAD
742-19-M16X1.5-ES-1
Download the CAD
742-19-M16X1.5-AS-1
Download the CAD
742-19-M16X1.5-OSS-1
Download the CAD
742-19-M16X1.5-ESS-1
Download the CAD
742-19-M16X1.5-ASS-1
Download the CAD
22
(.87)
M16 x 1.5 M5  x .8  15.5
(.61)
8
(.31)
8
(.31)

18
(.71)

20.8
(.82)
742-19-M20X1.5-OS-1
Download the CAD
742-19-M20X1.5-ES-1
Download the CAD
742-19-M20X1.5-AS-1
Download the CAD
742-19-M20X1.5-OSS-1
Download the CAD
742-19-M20X1.5-ESS-1
Download the CAD
742-19-M20X1.5-ASS-1
Download the CAD
26
(1.02)
M20 x 1.5  M5  x .8  16
(.63)
8.5
(.33)
8
(.31)
21
(.83)
24.3
(.96)
742-19-M26X1.5-OS-1
Download the CAD
742-19-M26X1.5-ES-1
Download the CAD
742-19-M26X1.5-AS-1
Download the CAD
742-19-M26X1.5-OSS-1
Download the CAD
742-19-M26X1.5-ESS-1
Download the CAD
742-19-M26X1.5-ASS-1
Download the CAD
32
(1.26)
M26 x 1.5 M5  x .8 17
(.67)
9
(.35)
8
(.31)
27
(1.06)
31.2
(1.23)
742-32-M27X1.5-OS-1
Download the CAD
742-32-M27X1.5-ES-1
Download the CAD
742-32-M27X1.5-AS-1
Download the CAD
742-32-M27X1.5-OSS-1
Download the CAD
742-32-M27X1.5-ESS-1
Download the CAD
742-32-M27X1.5-ASS-1
Download the CAD
32
(1.26)
M27 x 1.5 M5  x .8 17
(.67)
9
(.35)
8
(.31)
27
(1.06)
31.2
(1.23)
742-40-M33X1.5-OS-1
Download the CAD
742-40-M33X1.5-ES-1
Download the CAD
742-40-M33X1.5-AS-1
Download the CAD
742-40-M33X1.5-OSS-1
Download the CAD
742-40-M33X1.5-ESS-1
Download the CAD
742-40-M33X1.5-ASS-1
Download the CAD
40
(1.57)
M33 x 1.5 M5  x .8 19.5
(.77)
11
(.43)
8
(.31)
32
(1.26)
37
(1.46)
742-50-M40X1.5-OS-1
Download the CAD
742-50-M40X1.5-ES-1
Download the CAD
742-50-M40X1.5-AS-1
Download the CAD
742-50-M40X1.5-OSS-1
Download the CAD
742-50-M40X1.5-ESS-1
Download the CAD
742-50-M40X1.5-ASS-1
Download the CAD
50
(1.97)
M40 x 1.5 M5  x .8 21
(.83)
12
(.47)
8
(.31)
41
(1.61)
47.3
(1.86)
742-50-M42X1.5-OS-1
Download the CAD
742-50-M42X1.5-ES-1
Download the CAD
742-50-M42X1.5-AS-1
Download the CAD
742-50-M42X1.5-OSS-1
Download the CAD
742-50-M42X1.5-ESS-1
Download the CAD
742-50-M42X1.5-ASS-1
Download the CAD
50
(1.97)
M42 x 1.5 M5  x .8 21
(.83)
12
(.47)
8
(.31)
41
(1.61)
47.3
(1.86)
742-50-M42X2-OS-1
Download the CAD
742-50-M42X2-ES-1
Download the CAD
742-50-M42X2-AS-1
Download the CAD
742-50-M42X2-OSS-1
Download the CAD
742-50-M42X2-ESS-1
Download the CAD
742-50-M42X2-ASS-1
Download the CAD
50
(1.97)
M42 x 2.0 M5  x .8 21
(.83)
12
(.47)
8
(.31)
41
(1.61)
47.3
(1.86)
 
Metric Pipe Thread Table, with Vent Hole

Dimensions in:

millimeters
(inches)

Part Number d1 d2
Thread
d3
Vent
Hole
d4
Dipstick
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
742-19-M14X1.5-OS-2
Download the CAD
742-19-M14X1.5-ES-2
Download the CAD
742-19-M14X1.5-AS-2
Download the CAD
742-19-M14X1.5-OSS-2
Download the CAD
742-19-M14X1.5-ESS-2
Download the CAD
742-19-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)
160FRE1
Download the CAD
160FRE1/FS
Download the CAD
160FRE1/DRS
Download the CAD
742-22-M16X1,5-OSS-2
Download the CAD
742-22-M16X1,5-ESS-2
Download the CAD
742-22-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)
200XRE2
Download the CAD
200XRE2/FS
Download the CAD
200XRE2/DRS
Download the CAD
742-26-M20X1,5-OSS-2
Download the CAD
742-26-M20X1,5-ESS-2
Download the CAD
742-26-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)
260XRE3
Download the CAD
260XRE3/FS
Download the CAD
260XRE3/DRS
Download the CAD
742-32-M26X1,5-OSS-2
Download the CAD
742-32-M26X1,5-ESS-2
Download the CAD
742-32-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)
31.2
(1.23)
742-32-M27X1.5-OS-2
Download the CAD
742-32-M27X1.5-ES-2
Download the CAD
742-32-M27X1.5-AS-2
Download the CAD
742-32-M27X1.5-OSS-2
Download the CAD
742-32-M27X1.5-ESS-2
Download the CAD
742-32-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)
742-40-M33X1.5-OS-2
Download the CAD
742-40-M33X1.5-ES-2
Download the CAD
742-40-M33X1.5-AS-2
Download the CAD
742-40-M33X1.5-OSS-2
Download the CAD
742-40-M33X1.5-ESS-2
Download the CAD
742-40-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)
742-50-M40X1.5-OS-2
Download the CAD
742-50-M40X1.5-ES-2
Download the CAD
742-50-M40X1.5-AS-2
Download the CAD
742-50-M40X1.5-OSS-2
Download the CAD
742-50-M40X1.5-ESS-2
Download the CAD
742-50-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)
742-50-M42X1.5-OS-2
Download the CAD
742-50-M42X1.5-ES-2
Download the CAD
742-50-M42X1.5-AS-2
Download the CAD
742-50-M42X1.5-OSS-2
Download the CAD
742-50-M42X1.5-ESS-2
Download the CAD
742-50-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)
742-50-M42X2-OS-2
Download the CAD
742-50-M42X2-ES-2
Download the CAD
742-50-M42X2-AS-2
Download the CAD
742-50-M42X2-OSS-2
Download the CAD
742-50-M42X2-ESS-2
Download the CAD
742-50-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 Vent Hole

Dimensions in:

millimeters
(inches)

Part Number d1 d2
Pipe Thread
d4
Dipstick
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
742-19-G1/4-OS-1
Download the CAD
742-19-G1/4-ES-1
Download the CAD
742-19-G1/4-AS-1
Download the CAD
742-19-G1/4-OSS-1
Download the CAD
742-19-G1/4-ESS-1
Download the CAD
742-19-G1/4-ASS-1
Download the CAD
19
(.75)
G 1/4" M5  x .8 15.5
(.61)
8
(.31)
8
(.31)
15
(.59)
17.3
(.68)
742-22-G3/8-OS-1
Download the CAD
742-22-G3/8-ES-1
Download the CAD
742-22-G3/8-AS-1
Download the CAD
742-22-G3/8-OSS-1
Download the CAD
742-22-G3/8-ESS-1
Download the CAD
742-22-G3/8-ASS-1
Download the CAD
22
(.87)
G 3/8"  M5  x .8  15.5
(.61)
8
(.31)
8
(.31)

18
(.71)

20.8
(.82)
742-26-G1/2-OS-1
Download the CAD
742-26-G1/2-ES-1
Download the CAD
742-26-G1/2-AS-1
Download the CAD
742-26-G1/2-OSS-1
Download the CAD
742-26-G1/2-ESS-1
Download the CAD
742-26-G1/2-ASS-1
Download the CAD
26
(1.02)
G 1/2"  M5  x .8  16
(.63)
8.5
(.33)
8
(.31)
21
(.83)
24.3
(.96)
742-32-G3/4-OS-1
Download the CAD
742-32-G3/4-ES-1
Download the CAD
742-32-G3/4-AS-1
Download the CAD
742-32-G3/4-OSS-1
Download the CAD
742-32-G3/4-ESS-1
Download the CAD
742-32-G3/4-ASS-1
Download the CAD
32
(1.26)
G 3/4"  M5  x .8  17
(.67)
9
(.35)
8
(.31)
27
(1.06)
31.2
(1.23)
742-40-G3/4-OS-1
Download the CAD
742-40-G1-ES-1
Download the CAD
742-40-G1-AS-1
Download the CAD
742-40-G3/4-OSS-1
Download the CAD
742-40-G1-ESS-1
Download the CAD
742-40-G1-ASS-1
Download the CAD
40
(1.57)
G 1"  M5  x .8  19.5
(.77)
11
(.43)
8
(.31)
32
(1.26)
37
(1.46)
742-50-G11/4-OS-1
Download the CAD
742-50-G11/4-ES-1
Download the CAD
742-50-G11/4-AS-1
Download the CAD
742-50-G11/4-OSS-1
Download the CAD
742-50-G11/4-ESS-1
Download the CAD
742-50-G11/4-ASS-1
Download the CAD
50
(1.97)
G 1 1/4" M5  x .8 21
(.83)
12
(.47)
8
(.31)
41
(1.61)
47.3
(1.86)
742-60-G11/2-OS-1
Download the CAD
742-60-G11/2-ES-1
Download the CAD
742-60-G11/2-AS-1
Download the CAD
742-60-G11/2-OSS-1
Download the CAD
742-60-G11/2-ESS-1
Download the CAD
742-60-G11/2-ASS-1
Download the CAD
60
(2.36)
G 1 1/2" M5  x .8 22
(.87)
13
(.51)
8
(.31)
50
(1.97)
57.7
(2.27)
 
BSPP Parallel Thread Table, with Vent Hole

Dimensions in:

millimeters
(inches)

Part Number d1 d2
Pipe Thread
d3
Vent
Hole
d4
Dipstick
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
742-19-G1/4-OS-2
Download the CAD
742-19-G1/4-ES-2
Download the CAD
742-19-G1/4-AS-2
Download the CAD
742-19-G1/4-OSS-2
Download the CAD
742-19-G1/4-ESS-2
Download the CAD
742-19-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)
38GRE1
Download the CAD
38GRE1/FS
Download the CAD
38GRE1/DRS
Download the CAD
742-22-G3/8-OSS-2
Download the CAD
742-22-G3/8-ESS-2
Download the CAD
742-22-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)
50GRE2
Download the CAD
50GRE2/FS
Download the CAD
50GRE2/DRS
Download the CAD
742-26-G1/2-OSS-2
Download the CAD
742-26-G1/2-ESS-2
Download the CAD
742-26-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)
742-32-G3/4-OS-2
Download the CAD
742-32-G3/4-ES-2
Download the CAD
742-32-G3/4-AS-2
Download the CAD
742-32-G3/4-OSS-2
Download the CAD
742-32-G3/4-ESS-2
Download the CAD
742-32-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)
1GRE4
Download the CAD
742-40-G1-ES-2
Download the CAD
1GRE4/DRS
Download the CAD
1GRE4
Download the CAD
742-40-G1-ESS-2
Download the CAD
1GRE4/DRS
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)
742-50-G11/4-OS-2
Download the CAD
742-50-G11/4-ES-2
Download the CAD
742-50-G11/4-AS-2
Download the CAD
742-50-G11/4-OSS-2
Download the CAD
742-50-G11/4-ESS-2
Download the CAD
742-50-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)
742-60-G11/2-OS-2
Download the CAD
742-60-G11/2-ES-2
Download the CAD
742-60-G11/2-AS-2
Download the CAD
742-60-G11/2-OSS-2
Download the CAD
742-60-G11/2-ESS-2
Download the CAD
742-60-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)