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DIN 20066 4-Bolt Flange

Date:Jun 01, 2019



This connection is commonly used in fluid power systems. There are two pressure ratings. Form R (Code 61) is referred to as the “standard duty” series, and Form S (Code 62) is the “heavy duty” series.

DIN_20066_4-Flanged_head_Chart

The design concept for both series is the same, but the bolt hole spacing and flanged head diameters are larger for the higher pressure, Form S connection. Both metric and inch bolts

are used.The female (port) is an unthreaded hole with four bolt holes in a rectangular pattern around the port.

DIN_20066_JIS_B8363

The male consists of a flanged head, grooved for an o-ring, and either a captive flange or split flange halves with bolt holes to match the port. The seal takes place on the o-ring, which is compressed between the flanged head and the flat surface surrounding the port. The threaded bolts hold the connection together

DIN_20066_4-blot_flange_Chart


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