Vacuum Fittings Feedthroughs - Granzow

Only available for purchase in North and
South America
ISO-F and DIN 2501 Fixed Flange Fittings
Bold Type Flanges
Technical Data
Dimensional drawing for bold type flanges
Bolt holes
Size Bolt circle Outside diameter Size No. of holes
(B.C.) in in.
(O.D.) in in.
dimensions in brakets ( ) are in mm
DIN 63 ISO-K 5.118 (130) 6.299 (160) 0.551 (14) 4
DIN 100 ISO-K 6.693 (170) 8.268 (210) 0.709 (18) 8
DIN 160 ISO-K 8.858 (225) 10.433 (265) 0.709 (18) 8
DIN 250 ISO-K 13.189 (335) 14.764 (375) 0.709 (18) 12
DIN 350 ISO-K 17.520 (445) 19.291 (490) 0.906 (23) 12
DIN 500 ISO-K 23.622 (600) 25.394 (645) 0.906 (23) 20
ANSI 3 inch 6.000 (152.4) 7.500 (190.5) 0.750 (19) 4
ANSI 4 inch 7.500 (190.5) 9.000 (228.6) 0.750 (19) 8
ANSI 6 inch 9.500 (241) 11.000 (279.4) 0.875 (22) 8
ANSI 8 inch 11.750 (298) 13.500 (343) 0.875 (22) 8
ANSI 10 inch 14.250 (362) 16.000 (406.4) 1.000 (25.4) 12
ANSI 12 inch 17.000 (432) 19.000 (483) 1.000 (25.4) 12
ANSI 16 inch 21.250 (540) 23.500 (597) 1.125 (29) 16
DIN 63 ISO-F 4.311 (110) 5.118 (130 0.393 (10) 4
DIN 100 ISO-F 5.709 (145) 6.496 (165) 0.393 (10) 8
DIN 160 ISO-F 7.874 (200) 8.858 (225) 0.453 (11.5) 8
DIN 250 ISO-F 12.205 (310) 13.189 (335) 0.453 (11.5) 12
DIN 400 ISO-F 18.890 (480) 20.080 (510) 0.551 (14) 16
Maximum Recommended Counter Bore for ANSI Blank Flanges
(for Carbon or Stainless Steel Pipe)
Dimensional drawing for counter bore
for ANSI blank flange
Technical Data
Bolt holes
ANSI size Outside diameter (O.D.) Bolt circle (B.C.) No. of holes Diameter Thickness Max. C-Bore
3 7 1/2 6 4 3/4 7/8 4 1/4
4 9 7 1/2 8 3/4 7/8 5 3/4
6 11 9 1/2 8 7/8 15/16 7 1/2
Oerlikon Leybold Vacuum Full Line Catalog
75 C13