Brass Extension Plugs – NPT

Brass Extension Plugs – NPT

1/4″ HOLE

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for actual size

200 SERIES (1/4″ Hole)

1/16″ NPT Pipe Extensions
Catalog Number	L	Pipe Size (NPT)	Hex Size	A
250 X 2 1/2	2 1/2	1/16	3/8	11/16
250 X 4	4	1/16	3/8	13/16
250 X 5 1/2	5 1/2	1/16	3/8	13/16
250 X 7	7	1/16	3/8	13/16

1/8″ NPT Pipe Extensions
Catalog Number	L	Pipe Size (NPT)	Hex Size	A
251 X 2 1/2	2 1/2	1/8	7/16	11/16
251 X 4	4	1/8	7/16	1
251 X 5 1/2	5 1/2	1/8	7/16	1
251 X 7	7	1/8	7/16	1
251 X 8 1/2	8 1/2	1/8	7/16	1
251 X 10	10	1/8	7/16	1
251 X 11 1/2	11 1/2	1/8	7/16	1
251 X 13	13	1/8	7/16	1

1/4″ NPT Pipe Extensions
Catalog Number	L	Pipe Size (NPT)	Hex Size	A
252 X 2 1/2	2 1/2	1/4	9/16	7/8
252 X 4	4	1/4	9/16	1 1/4
252 X 5 1/2	5 1/2	1/4	9/16	1 1/4
252 X 7	7	1/4	9/16	1 1/4
252 X 8 1/2	8 1/2	1/4	9/16	1 1/4
252 X 10	10	1/4	9/16	1 1/4
252 X 11 1/2	11 1/2	1/4	9/16	1 1/4
252 X 13	13	1/4	9/16	1 1/4

3/8″ NPT Pipe Extensions
Catalog Number	L	Pipe Size (NPT)	Hex Size	A
253 X 2 1/2	2 1/2	3/8	11/16	1
253 X 4	4	3/8	11/16	1 1/4
253 X 5 1/2	5 1/2	3/8	11/16	1 1/4
253 X 7	7	3/8	11/16	1 1/4
253 X 8 1/2	8 1/2	3/8	11/16	1 1/4
253 X 10	10	3/8	11/16	1 1/4
253 X 11 1/2	11 1/2	3/8	11/16	1 1/4
253 X 13	13	3/8	11/16	1 1/4

1/2″ NPT Pipe Extensions
Catalog Number	L	Pipe Size (NPT)	Hex Size	A
Available on Request

3/8″ HOLE

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for actual size

300 SERIES (3/8″ Hole)

1/16″ NPT Pipe Extensions
Catalog Number	L	Pipe Size (NPT)	Hex Size	A
350 X 2 1/2	2 1/2	1/16	9/16	7/8
350 X 4	4	1/16	9/16	1
350 X 5 1/2	5 1/2	1/16	9/16	1
350 X 7	7	1/16	9/16	1

1/8″ NPT Pipe Extensions
Catalog Number	L	Pipe Size (NPT)	Hex Size	A
351 X 2 1/2	2 1/2	1/8	9/16	7/8
351 X 4	4	1/8	9/16	1
351 X 5 1/2	5 1/2	1/8	9/16	1
351 X 7	7	1/8	9/16	1
351 X 8 1/2	8 1/2	1/8	9/16	1
351 X 10	10	1/8	9/16	1
351 X 11 1/2	11 1/2	1/8	9/16	1
351 X 13	13	1/8	9/16	1

1/4″ NPT Pipe Extensions
Catalog Number	L	Pipe Size (NPT)	Hex Size	A
352 X 2 1/2	2 1/2	1/4	9/16	7/8
352 X 4	4	1/4	9/16	1 1/4
352 X 5 1/2	5 1/2	1/4	9/16	1 1/4
352 X 7	7	1/4	9/16	1 1/4
352 X 8 1/2	8 1/2	1/4	9/16	1 1/4
352 X 10	10	1/4	9/16	1 1/4
352 X 11 1/2	11 1/2	1/4	9/16	1 1/4
352 X 13	13	1/4	9/16	1 1/4

3/8″ NPT Pipe Extensions
Catalog Number	L	Pipe Size (NPT)	Hex Size	A
353 X 2 1/2	2 1/2	3/8	11/16	1
353 X 4	4	3/8	11/16	1 1/4
353 X 5 1/2	5 1/2	3/8	11/16	1 1/4
353 X 7	7	3/8	11/16	1 1/4
353 X 8 1/2	8 1/2	3/8	11/16	1 1/4
353 X 10	10	3/8	11/16	1 1/4
353 X 11 1/2	11 1/2	3/8	11/16	1 1/4
353 X 13	13	3/8	11/16	1 1/4

1/2″ NPT Pipe Extensions
Catalog Number	L	Pipe Size (NPT)	Hex Size	A
354 X 2 1/2	2 1/2	1/2	7/8	1 1/8
354 X 4	4	1/2	7/8	1 1/2
354 X 5 1/2	5 1/2	1/2	7/8	1 1/2
354 X 7	7	1/2	7/8	1 1/2
354 X 8 1/2	8 1/2	1/2	7/8	1 1/2
354 X 10	10	1/2	7/8	1 1/2
354 X 11 1/2	11 1/2	1/2	7/8	1 1/2
354 X 13	13	1/2	7/8	1 1/2

1/2″ HOLE

Download PDF

for actual size

500 SERIES (1/2″ Hole)

1/16″ NPT Pipe Extensions
Catalog Number	L	Pipe Size (NPT)	Hex Size	A
Available on Request

1/8″ NPT Pipe Extensions
Catalog Number	L	Pipe Size (NPT)	Hex Size	A
Available on Request

1/4″ NPT Pipe Extensions
Catalog Number	L	Pipe Size (NPT)	Hex Size	A
Available on Request

3/8″ NPT Pipe Extensions
Catalog Number	L	Pipe Size (NPT)	Hex Size	A
553 X 2 1/2	2 1/2	3/8	13/16	1 1/8
553 X 4	4	3/8	13/16	1 3/8
553 X 5 1/2	5 1/2	3/8	13/16	1 3/8
553 X 7	7	3/8	13/16	1 3/8
553 X 8 1/2	8 1/2	3/8	13/16	1 3/8
553 X 10	10	3/8	13/16	1 3/8
553 X 11 1/2	11 1/2	3/8	13/16	1 3/8
553 X 13	13	3/8	13/16	1 3/8

1/2″ NPT Pipe Extensions
Catalog Number	L	Pipe Size (NPT)	Hex Size	A
554 X 2 1/2	2 1/2	1/2	7/8	1 1/8
554 X 4	4	1/2	7/8	1 1/2
554 X 5 1/2	5 1/2	1/2	7/8	1 1/2
554 X 7	7	1/2	7/8	1 1/2
554 X 8 1/2	8 1/2	1/2	7/8	1 1/2
554 X 10	10	1/2	7/8	1 1/2
554 X 11 1/2	11 1/2	1/2	7/8	1 1/2
554 X 13	13	1/2	7/8	1 1/2

Custom Mold Brass Extension Plugs are available cut and re-threaded to any exact length for a nominal fee.
Order 100 or more pieces of one length, and exact length adjustment is free.