Class 400 Long Weld Neck Flange Dimensions

Size in Inch	Size in mm	Outer Dia.	Flange Thick.	Hub OD	Weld Neck OD	RF Dia.	RF Height	PCD	Hub Length	No of Bolts	Bolt Size UNC	RF Stud Length	Hole Size	ISO Stud Size
		A	B	C	D	E	F	G	H
1/2	15	95	14.3	38	21.3	34.9	7	66.7	as per requirement	4	1/2	75	5/8	M14
3/4	20	115	15.9	48	26.7	42.9	7	82.6	as per requirement	4	5/8	90	3/4	M16
1	25	125	17.5	54	33.4	50.8	7	88.9	as per requirement	4	5/8	90	3/4	M16
1 1/4	32	135	20.7	64	42.2	63.5	7	98.4	as per requirement	4	5/8	95	3/4	M16
1 1/2	40	155	22.3	70	48.3	73	7	114.3	as per requirement	4	3/4	110	7/8	M20
2	50	165	25.4	84	60.3	92.1	7	127	as per requirement	8	5/8	110	3/4	M16
2 1/2	65	190	28.6	100	73	104.8	7	149.2	as per requirement	8	3/4	120	7/8	M20
3	80	210	31.8	117	88.9	127	7	168.3	as per requirement	8	3/4	125	7/8	M20
3 1/2	90	230	35	133	101.6	N/A	7	184.2	as per requirement	8	7/8	140	1	M24
4	100	255	35	146	114.3	157.2	7	200	as per requirement	8	7/8	140	1	M24
5	125	280	38.1	178	141.3	185.7	7	235	as per requirement	8	7/8	145	1	M24
6	150	320	41.3	206	168.3	215.9	7	269.9	as per requirement	12	7/8	150	1	M24
8	200	380	47.7	260	219.1	269.9	7	330	as per requirement	12	1	170	1 1/8	M27
10	250	445	54	321	273	323.8	7	387.4	as per requirement	16	1 1/8	190	1 1/4	M30
12	300	520	57.2	375	323.8	381	7	450.8	as per requirement	16	1 1/4	205	1 3/8	M33
14	350	585	60.4	425	355.6	412.8	7	514.4	as per requirement	20	1 1/4	210	1 3/8	M33
16	400	650	63.5	483	406.4	469.9	7	571.5	as per requirement	20	1 3/8	220	1 1/2	M36
18	450	710	66.7	533	457	533.4	7	628.6	as per requirement	24	1 3/8	230	1 1/2	M36
20	500	775	69.9	587	508	584.2	7	685.8	as per requirement	24	1 1/2	240	1 3/4	M39
24	600	915	76.2	702	610	692.2	7	812.8	as per requirement	24	1 3/4	265	1 7/8	M45