Raised Single Bolt Hatches

Raised Single Bolt Hatch

ModelUMC-540

This industry standard steel enclosure features a strongback style design and is operated by a single 7/8” stainless steel bolt. Its easy operation facilitates convenient use while providing a secure hatch.

Models: UMC-540-1775 · UMC-540-1975
Part no.: 08380-101A · 08381-101A
Material: Steel (ASTM A36) · Painted Primer Grey · UMC-540-20 Steel Hatch with Stainless Steel Hardware
Category: Raised Single Bolt Hatches

Built to ABS standardsQuote within 48 hWorldwide shipping

Overview

Specifications

Dimensions in inches (mm)

Model Number	Part Number	Description	Clear Opening In. (mm)	Weight Total Lbs (Kgs.)	Cutout Dimension in. (mm)
UMC-540-1775	08380-101A	Raised 20″ Round Single Bolt Watertight Hatch	17.75″ (451)	70 (32)	20″ (508)
UMC-540-1975	08381-101A	Raised 22″ Round Single Bolt Watertight Hatch	19.75″ (502)	75 (34)	22″ (559)

Hardware

Hex Head Bolt – Stainless Steel
Keeper Chain – Galvanized Steel
Hinge Pins – Steel
Cotter Pins – Stainless Steel
Washer – Brass
Washer Gasket – Neoprene
Hatch Gasket – Neoprene
Meets ABS (American Bureau of Shipping) requirements for design and materials.

Features

Stainless steel bolt and steel strongback provide dissimilar metals to prevent galling and ensure trouble free operation.
Neoprene gaskets ensure water tight design.
Galvanized keeper chain ensures covers stay attached and never get lost.

Application

Raised single bolt hatches are typically found along the gunnels of a barge as well as on the bow/ stern and on top of cargo compartments or tanks. They are used to access wing tanks, the rake compartment, cargo compartments etc. for venting, filling, and inspecting.