Slip-On Flanges – Class 400

Nom-inal size		O	C	R	X	Y	B	No. of holes	Diam. of holes	Diam. of bolts	Diam. of bolt circle	Approx. weight lbs. Kg
in.	3/4″
mm.
in.	1″
mm.
in.	1 1/4″
mm.
in.	1 1/2″
mm.
in.	2″
mm.
in.	2 1/2″
mm.
in.	3″
mm.
in.	3 1/2″
mm.
in.	4″	10	1.38	6.19	5.75	2	4.57	8	1		7.88	26
mm.		254	35.1	157.2	146.1	50.8	116.1		25.4	22.2	200.2	12
in.	5″	11	1.5	7.31	7	2.12	5.66	8	1		9.25	31
mm.		279.4	38.1	185.7	177.8	53.8	143.8		25.4	22.2	235	14
in.	6″	12.5	1.62	8.5	8.12	2.25	6.72	12	1		10.62	44
mm.		317.5	41.1	215.9	206.2	57.2	170.7		25.4	22.2	269.7	20
in.	8″	15	1.88	10.62	10.25	2.69	8.72	12	1.12	1	13	67
mm.		381	47.8	269.7	260.4	68.3	221.5		28.4	25.4	330.2	30
in.	10″	17.5	2.12	12.75	12.62	2.88	10.88	16	1.25	1 1/8	15.25	91
mm.		444.5	53.8	323.9	320.5	73.2	276.4		31.8	28.6	387.4	41
in.	12″	20.5	2.25	15	14.75	3.12	12.88	16	1.38	1 1/4	17.75	130
mm.		520.7	57.2	381	374.7	79.2	327.2		35.1	31.8	450.9	59
in.	14″	23	2.38	16.25	16.75	3.31	14.14	20	1.38	1 1/4	20.25	180
mm.		584.2	60.5	412.8	425.5	84.1	359.2		35.1	31.8	514.4	82
in.	16″	25.5	2.5	18.5	19	3.69	16.16	20	1.5	1 3/8	22.5	235
mm.		647.7	63.5	469.9	482.6	93.7	410.5		38.1	34.9	571.5	107
in.	18″	28	2.62	21	21	3.88	18.18	24	1.5	1 3/8	24.75	285
mm.		711.2	66.5	533.4	533.4	98.6	461.8		38.1	34.9	628.7	129
in.	20″	30.5	2.75	23	23.12	4	20.2	24	1.62	1 1/2	27	345
mm.		774.7	69.9	584.2	587.2	101.6	513.1		41.1	38.1	685.8	156
in.	24″	36	3	27.25	27.62	4.5	24.25	24	1.88	1 3/4	32	510
mm.		914.4	76.2	692.2	701.5	114.3	616		47.8	44.5	812.8	231