Part No.	1 Female NPTF					2 Female NPTF		N Length		N1 Length		Y Flats		Operating Pressure
5504-02-02-4 5504-04-02-4	1/8 - 27 1/4 - 18					1/8 - 27 1/8 - 27		0.66 0.88		0.66 0.67		9/16 3/4		6,000 6,000
5504-04-04-4 5504-06-04-4	1/4 - 18 3/8 - 18					1/4 - 18 1/4 - 18		0.88 1.02		0.88 1.01		3/4 7/8		6,000 4,500
5504-06-06-4 5504-08-04-4	3/8 - 18 1/2 - 14					3/8 - 18 1/4 - 18		1.02 1.23		1.02 1.00		7/8 1 1/16		4,500 3,000
5504-08-06-4 5504-08-08-4	1/2 - 14 1/2 - 14					3/8 - 18 1/2 - 14		1.23 1.23		1.23 1.23		1 1/16 1 1/16		3,000 3,000
5504-12-08-4 5504-12-12-4	3/4 - 14 3/4 - 14					1/2 - 14 3/4 - 14		1.36 1.36		1.35 1.36		1 5/16 1 5/16		3,000 3,000
5504-16-12-4 5504-16-16-4	1 - 11 1/2 1 - 11 1/2					3/4 - 14 1 - 11 1/2		1.62 1.62		1.62 1.62		1 5/8 1 5/8		2,200 2,200
5504-20-12-4 5504-20-20-4	1 1/4 - 11 1/2 1 1/4 - 11 1/2					3/4 - 14 1 1/4 - 11 1/2		1.70 1.70		1.61 1.70		1 7/8 1 7/8		1,800 1,800
5504-24-24-4 5504-32-32-4	1 1/2 - 11 1/2 2 - 11 1/2					1 1/2 - 11 1/2 2 - 11 1/2		2.08 2.39		2.08 2.39		2 9/16 2 13/16		1,500 1,200