Flanges - BS4504

BS4504 Flanges

Table 6

Nominal bore in mm	Flange dia.mm	Thickness mm	Length & dia.of bolts mm	No of holes	P C.D. mm
15	80	12	M10 X 40	4	55
20	90	14	M10 X 45	4	65
25	100	14	M10 X 45	4	75
32	120	14	M12 X 50	4	90
40	130	14	M12 X 50	4	100
50	140	14	M12 X 50	4	110
65	160	14	M12 X 50	4	130
80	190	16	M16 X 60	4	150
100	210	16	M16 X 60	4	170
125	240	18	M16 X 60	8	200
150	265	18	M16 X 60	8	225
200	320	20	M16 X 65	8	280
250	375	22	M16 X 70	12	335
300	440	22	M20 X 70	12	395

Table 16

Nominal bore mm	Flange dia. mm	Thickness mm	Length & dia.of bolts mm	No of holes	P.C D.mm
15	95	14	M12 X 45	4	65
20	105	16	M12 X 50	4	75
25	115	16	M12 X 50	4	85
32	140	1C	M16 X 60	4	100
40	150	16	M16 X 60	4	110
50	165	18	M16 X 60	4	125
65	185	18	M16 X 60	4	145
80	200	20	M16 X 65	8	160
100	220	20	M16 X 70	8	180
125	250	22	M16 X 70	8	210
150	285	22	M20 X 70	8	240
200	340	24	M20 X 93	12	295
250	405	26	M24 X 90	12	355
300	460	28	M24 X 90	12	410

Table 40

Nominal Bore dia.	Flange dia. mm	Thickness mm	Length & dia. of bolts mm	No. of holes	P.C.D
15	95	16	M12 X 50	4	65
20	105	18	M12 X 55	4	75
25	115	18	M12 X 55	4	85
32	140	18	M16 X 60	4	100
40	150	18	M16 X 60	4	110
50	165	20	M16 X 65	4	125
65	185	22	M16 X 70	8	145
80	200	24	M16 X 70	8	160
100	235	24	M20 X 80	8	190
125	270	26	M24 X 85	8	220
150	300	28	M24 X 100	8	250
200	375	32	M27 X 100	12	320
250	450	40	M30 X 110	12	385
300	515	48	M30 X 120	16	450

Table 10

Nominal bore dia. mm	Flange dia. mm	Thickness mm	Length & dia. of bolts mm	No of holes	P.C.D
15	95	14	M12 X 45	4	65
20	105	16	M12 X 50	4	75
25	115	16	M12 X 50	4	85
32	140	16	M16 X 60	4	100
40	150	16	M16 X 60	4	110
50	165	18	tvl16 X 60	4	125
65	185	18	M16 X 60	4	145
80	200	20	M16 X 65	8	160
100	220	20	M16 X 70	8	180
125	250	22	M16 X 70	8	210
150	285	22	M20 X 70	8	240
200	340	24	M20 X 80	8	295
250	395	26	M20 X 80	12	350
300	445	26	M20 X 80	12	400

Table 25

Nominal bore	Flange dia. mm	Thickness mm	Length & dia.of bolts mm	No of holes	P.C D. mm
15	95	16	M12 X 50	4	65
20	105	18	M12 X 55	4	75
25	115	18	M12 X 55	4	85
32	140	18	M16 X 60	4	100
40	150	18	M16 X 60	4	110
50	165	20	M16 X 65	4	125
65	185	22	M16 X 70	8	145
80	200	24	M16 X 70	8	160
100	235	24	M20 X 80	8	190
125	270	26	M24 X 85	8	220
150	300	28	M24 X 100	8	250
200	360	32	M24 X 100	12	310
250	425	40	M27 X 100	12	370
300	485	48	M27 X 110	16	430

Table 64

Nominal bore	Flange dia. mm	Thickness	Length & dia. of bolts	No. of holes	P.C.D
15	105	20	M12 X 65	4	75
20	130	22	M16 X 70	4	90
25	140	24	M16 X 75	4	100
32	155	24	M20 X 80	4	110
40	170	26	M20 X 85	4	125
50	180	26	M20 X 85	4	135
65	205	26	M20 X 85	8	160
80	215	30	M20 X 90	8	170
100	250	32	M24 X 95	8	200
125	295	34	M27 X 110	8	240
150	345	36	M30 X 115	8	280
200	415	46	M33 X 130	12	345
250	470	54	M33 X 140	12	400
300	530	62	M33 X 150	16	460