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Single Bolt Style: Round – 20” & 22”

Single Bolt Style: Round – 20” & 22”


    • Made from high strength 3/8” steel for better impact resistance
    • 1-5/16” wrench required for single bolt secure engagement
    • Stainless steel bolt and steel strongback provide dissimilar metals to prevent galling and ensure trouble free operation
    • Nitrile rubber gaskets ensure Watertight design
    • Stainless steel chain ensures covers stay attached and never get lost
This industry standard steel enclosure is also based on the proven strongback style hatch and is operated by a single 7/8” Stainless steel bolt. The simple design provides a secured hatch and flush deck profile.
Feature Description
Bolt 7/8-9 – Stainless Steel
Chain – Stainless Steel
Hinge Pin – Stainless Steel
Cotter Pin – Stainless Steel
Washer – Brass
Bolt Gasket – Nitrile Rubber
Steel (ASTM A36)
Painted Primer Grey

UMC-301-20 Steel Hatch with Stainless Steel Hardware
Model Number Description Part Number Clear Opening In. (mm) Weight Total Lbs (Kgs.) Downloads
UMC-540-1775 Raised 20″ Round Single Bolt Watertight Hatch 08380-101A 17.75″
UMC-540-1975 Raised 22″ Round Single Bolt Watertight Hatch 08381-101A 19.75″

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