EFC International
EFC International
1940 Craigshire St. Louis,
MO 63146-4008
Phone: 1 314.434.28881
Contact: www.efc-intl.com/contact
Website: www.efc-intl.com
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These Rubber Grommets are used to protect or cover through holes. There are 160 sizes available that will accommodate mounting holes ranging from 0.250 in - 2.50 in (6.4 mm - 63.5 mm) diameter and panel thickness ranging from 0.063 in - 0.375 in (1.6 mm - 9.5 mm).
HEYCO® Rubber Grommets
Unit of Measure
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Item #

Item Name

Head Diameter

Inside Diameter

Overall Height

20300906-AC03 N/A HEYCO® 2.500 Inch (in) Head Diameter Rubber Grommet N/A 2.500 in63.50 mm N/A 1.750 in44.50 mm N/A 0.531 in13.50 mm
20300907-AC03 N/A HEYCO® 2.500 Inch (in) Head Diameter Rubber Grommet N/A 2.500 in63.50 mm N/A 1.750 in44.50 mm N/A 0.560 in14.20 mm
20300908-AC03 N/A HEYCO® 0.344 Inch (in) Head Diameter Rubber Grommet N/A 0.344 in8.70 mm N/A 0.125 in3.20 mm N/A 0.188 in4.80 mm
20300909-AC03 N/A HEYCO® 0.375 Inch (in) Head Diameter Rubber Grommet N/A 0.375 in9.50 mm N/A 0.156 in4.00 mm N/A 0.188 in4.80 mm
20300910-AC03 N/A HEYCO® 0.438 Inch (in) Head Diameter Rubber Grommet N/A 0.438 in11.10 mm N/A 0.156 in4.00 mm N/A 0.375 in9.50 mm
20300911-AC03 N/A HEYCO® 0.438 Inch (in) Head Diameter Rubber Grommet N/A 0.438 in11.10 mm N/A 0.188 in4.80 mm N/A 0.219 in5.60 mm
20300912-AC03 N/A HEYCO® 0.438 Inch (in) Head Diameter Rubber Grommet N/A 0.438 in11.10 mm N/A 0.188 in4.80 mm N/A 0.188 in4.80 mm
20300913-AC03 N/A HEYCO® 0.500 Inch (in) Head Diameter Rubber Grommet N/A 0.500 in12.70 mm N/A 0.188 in4.80 mm N/A 0.250 in6.40 mm
20300914-AC03 N/A HEYCO® 0.500 Inch (in) Head Diameter Rubber Grommet N/A 0.500 in12.70 mm N/A 0.188 in4.80 mm N/A 0.281 in7.10 mm
20300915-AC03 N/A HEYCO® 0.406 Inch (in) Head Diameter Rubber Grommet N/A 0.406 in10.30 mm N/A 0.188 in4.80 mm N/A 0.219 in5.60 mm
20300916-AC03 N/A HEYCO® 0.438 Inch (in) Head Diameter Rubber Grommet N/A 0.438 in11.80 mm N/A 0.188 in4.80 mm N/A 0.250 in6.40 mm
20300917-AC03 N/A HEYCO® 0.438 Inch (in) Head Diameter Rubber Grommet N/A 0.438 in11.80 mm N/A 0.188 in4.80 mm N/A 0.313 in8.00 mm
20300918-AC03 N/A HEYCO® 0.438 Inch (in) Head Diameter Rubber Grommet N/A 0.438 in11.80 mm N/A 0.188 in4.80 mm N/A 0.375 in9.50 mm
20300919-AC03 N/A HEYCO® 0.438 Inch (in) Head Diameter Rubber Grommet N/A 0.438 in11.80 mm N/A 0.219 in5.60 mm N/A 0.188 in4.80 mm
20300920-AC03 N/A HEYCO® 0.563 Inch (in) Head Diameter Rubber Grommet N/A 0.563 in14.30 mm N/A 0.313 in8.00 mm N/A 0.500 in12.70 mm
20300921-AC03 N/A HEYCO® 0.500 Inch (in) Head Diameter Rubber Grommet N/A 0.500 in12.70 mm N/A 0.125 in3.20 mm N/A 0.313 in8.00 mm
20300922-AC03 N/A HEYCO® 0.625 Inch (in) Head Diameter Rubber Grommet N/A 0.625 in15.90 mm N/A 0.188 in4.80 mm N/A 0.375 in9.50 mm
20300923-AC03 N/A HEYCO® 0.563 Inch (in) Head Diameter Rubber Grommet N/A 0.563 in14.30 mm N/A 0.250 in6.40 mm N/A 0.250 in6.40 mm
20300924-AC03 N/A HEYCO® 0.500 Inch (in) Head Diameter Rubber Grommet N/A 0.500 in12.70 mm N/A 0.250 in6.40 mm N/A 0.250 in6.40 mm
20300925-AC03 N/A HEYCO® 0.563 Inch (in) Head Diameter Rubber Grommet N/A 0.563 in14.30 mm N/A 0.250 in6.40 mm N/A 0.281 in7.10 mm
20300926-AC03 N/A HEYCO® 0.563 Inch (in) Head Diameter Rubber Grommet N/A 0.563 in14.30 mm N/A 0.281 in7.10 mm N/A 0.250 in6.40 mm
20300927-AC03 N/A HEYCO® 0.625 Inch (in) Head Diameter Rubber Grommet N/A 0.625 in15.90 mm N/A 0.281 in7.10 mm N/A 0.375 in9.50 mm
20300928-AC03 N/A HEYCO® 0.625 Inch (in) Head Diameter Rubber Grommet N/A 0.625 in15.90 mm N/A 0.313 in8.00 mm N/A 0.281 in7.10 mm
20300929-AC03 N/A HEYCO® 0.625 Inch (in) Head Diameter Rubber Grommet N/A 0.625 in15.90 mm N/A 0.313 in8.00 mm N/A 0.313 in8.00 mm
20300930-AC03 N/A HEYCO® 0.625 Inch (in) Head Diameter Rubber Grommet N/A 0.625 in15.90 mm N/A 0.250 in6.40 mm N/A 0.188 in4.80 mm
Unit of Measure
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