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Twist Lock Style: Round – Flush & Coaming

Twist Lock Style: Round – Flush & Coaming


    • Low cost – high strength cast steel construction
    • Lift-out grab handles molded into cover casting
    • Reinforced steel ribs on cover to provide greater impact resistance
    • Galvanized steel chain ensures the cover stays attached and will never get lost
The Twist Lock hatch is a simple proven design for hatch enclosures. The twist engagement method for securing this hatch makes this the simplest hatch to operate. This hatch is made from high strength 3/8” cast steel with reinforced ribs. Built-in Lift-out handles are molded into the cover plate for convenience.
Feature Description
Gasket – Nitrile Rubber
Chain – Galvanized Steel
Coaming – Steel
Steel (ASTM A36)
Painted Primer Grey

UMC-474 Cast Steel Hatch with Cast Steel Deck Ring
Model Number Description Part Number Clear Opening In. (mm) Weight Total Lbs (Kgs.) Downloads
UMC-474 Flush 18″ Round Twist Lock Hatch 08640-101A 18.6″
UMC-474-5 Raised 18″ Round Twist Lock Hatch W/ 5″ Coaming 08641-101A 18.6″

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