Perko 0931 Flush Lock with 2 Keys, 2 in Hole, 1/4 to 1-1/8 in Door

Overview

The Perko 0931 is a flush lock with two keys for marine doors, lockers, hatches, and access panels where a low-profile keyed latch is needed. It fits a 2 inch diameter mounting hole, uses a 2-1/2 inch by 2-1/2 inch face plate, and is made for door or panel thicknesses from 1/4 inch to 1-1/8 inch.

This series is built with a black or white polymer body, chrome plated zinc alloy, and a stainless steel stem and lock nut. The latch has detents that show the open or closed position, which is useful on board when checking that a locker, compartment, or cabin panel has been secured before getting underway.

Key features

• Flush lock format keeps the face plate low on doors, lockers, and access panels where protruding hardware can snag gear or lines.
• Supplied with two keys for keyed access control on storage compartments and interior or exterior boat panels.
• Installs in a 2 inch diameter hole and fits door or panel thicknesses from 1/4 inch to 1-1/8 inch.
• 2-1/2 inch by 2-1/2 inch face plate gives a clear reference for checking available mounting space before cutting or replacing hardware.
• Polymer body with chrome plated zinc alloy hardware and a stainless steel stem and lock nut for use in the marine environment.
• Detents indicate the open or closed position, helping the operator confirm latch status at a glance.
• Available in black or white finishes, with cam bar configurations for different latch reach and panel setups.

Variants

The range varies by finish, cam bar style, cam bar adjustment range, and shipping weight. Black and white finishes are available, with adjustment ranges of 3/8 inch to 3 inches or 1-1/16 inches to 2-9/16 inches depending on the cam bar configuration.

Across the series, the shared fit details remain the same: a 2 inch mounting hole, a 2-1/2 inch by 2-1/2 inch face plate, and compatibility with 1/4 inch to 1-1/8 inch door or panel thickness. The finish should be matched to the surrounding deck, locker, or cabin hardware, while the cam bar option should match the latch reach needed behind the panel.

Installation and fit

Before installation, confirm the panel thickness, the available space behind the mounting surface, and the cam bar reach needed to engage the strike area. The 2 inch mounting hole and square face plate make it a practical replacement candidate when matching existing cutouts, but the cam bar style should still be checked against the original latch geometry.

This lock suits boat owners replacing worn locker hardware, adding keyed access to storage compartments, or fitting a flush latch where a cleaner surface is preferred. Common locations include cockpit lockers, cabin storage doors, deck access panels, and other compartments where the mounting surface falls within the stated thickness range.

Maintenance and care

Rinse the lock with fresh water after saltwater exposure and keep the keyway free of grit, salt, and cleaning residue. During routine boat checks, operate the latch and key to confirm smooth movement, and inspect the stem, lock nut, cam bar, and strike contact point for secure engagement.