ISO Flanges

'K' Weld Flanges: SS

The ISO 'K' flanges use double claw clamp fasteners to connect two flange surfaces together. (Remember that K flanges are 'Klamped' together.) We offer blank flanges in 304 stainless steel or aluminum, and weld flanges in stainless steel.

Weld flanges fit standard U.S. tubing sizes. The clearance in the counterbore varies from 0.010" for the smaller flanges through 0.020" for medium or large flanges.

ISO hardware is made of stainless steel.

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Figure 1 (bored K flange)

'K' Weld Flanges (SS)

ISO Flange Size (mm)	Tube OD (in.)	Bore (in.)	A (in.)	B (in.)	VacuCAD Downloads (Click Here to Login)		Part No.	Price (USA)
63	2.5	2.37	2.51	0.22	~~DXF~~	~~STP~~	QF63-SWK	$50.00
80	3	2.87	3.01	0.22	~~DXF~~	~~STP~~	QF80-SWK	$60.00
100	4	3.87	4.01	0.22	~~DXF~~	~~STP~~	QF100-SWK	$65.00
160	6	5.83	6.02	0.22	~~DXF~~	~~STP~~	QF160-SWK	$95.00
200	8	7.76	8.02	0.22	~~DXF~~	~~STP~~	QF200-SWK	$150.00
250	10	9.75	10.02	0.22	~~DXF~~	~~STP~~	QF250-SWK	$195.00
320	12.75	12.42	12.77	0.3	~~DXF~~	~~STP~~	QF320-SWK	$360.00
400	16	15.5	16.02	0.3	~~DXF~~	~~STP~~	QF400-SWK	$490.00
500	20	19.5	20.02	0.3	~~DXF~~	~~STP~~	QF500-SWK	$610.00
630	24	23.75	24.02	0.394	~~DXF~~	~~STP~~	QF630-SWK	$895.00
Questions or comments contact our product specialists at: hardware@lesker.com

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