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Nominal Diameter		Size of nipple							Size of socket				Thread pitch
mm	in	D		L		d2		I	d1		H		Thread pitch
75	3	46.04	0 -0.5	76.20	0 -1	20.80	0 -5	＜7	39.72	+0.50 0	44.10	+7 0	6.35
100	4	69.85		101.60		40.30			63.53		56.80
130		79.38		127.00		45.60			73.06		69.50
150	6	92.08		139.70		56.20			85.76		75.90
175	7	107.95		165.10		67.80			101.63		88.60
200	8	122.24		177.80		80.00			115.92		94.90
225	9	139.70		177.80		97.46			133.38		94.90
250	10	152.40		190.50		108.00			146.08		101.30
300	12	177.80		215.90		129.20			171.48		114.00
350	14	203.20		254.00		148.20			196.88		133.00
400	16	222.25		304.80		158.80			215.93		158.40
400	16	222.25		355.60		150.00			215.93		183.80
225	9	139.70	0 -0.5	203.20	0 -1	90.73	0 -5	＜10	131.27	0 +0.50	107.60	+7 0	8.47
250	10	155.57		220.00		103.80			147.14		116.00
300	12	177.16		270.90		116.90			168.73		141.50
350	14	215.90		304.80		150.00			207.47		158.40
400	16	215.90		304.80		150.00			207.47		158.40
400	16	241.30		338.70		169.80			232.87		175.30