This minimum profile Breather Valve has a captive knurled twist knob for hand operation.  The valve is black anodized and can be used in thin wall containers.  It mounts through a 0.50 in. (13 mm) diameter hole.  Meets MS18014-1.

Materials and Finish: Housing is aluminum with anodized finish.  Weight: 0.013 lb. (6 grams)

Mounting Requirements: Each valve comes complete with nut and gasket.
Mounting hole diameter: 0.50 ± 0.015 (12.7 ± 0.38 mm)
Installation torque: 15-20 in. - lbs. (1.7-2.3 N•m)
Maximum wall thickness: 0.08 (2 mm)
Add washer for wall thickness less than 0.02 (0.5 mm). (P/N MS15795-855, order separately.)
For threaded boss installation: 0.468-32 UNS-2B; 0.50 ± 0.015 (12.7 ± 0.38 mm) diameter X 0.02 (0.5 mm) minimum deep counterbore required for thread relief.

The TA321 is appropriate for use on NEMA 1, 2, 3, 3R, 3S, 4, 5, 6, 12, 12K, and 13 enclosures, as well as IP65/IP67 enclosures. This item may also be appropriate for use on other NEMA or IP enclosures, depending upon the application. Contact AGM's Engineering department for more information.