Camloc R4G-3 Snap-On Retaining Ring for D4002 Mounting Grommets, Zinc-Plated Steel

Camloc – Premium Quarter-Turn Fastening Technology

Camloc is an established brand of industrial quick-release fasteners with a history dating back to 1937. Today, the brand is part of Howmet Fastening Systems, offering engineered quarter-turn fasteners, retaining washers, mounting grommets, and receptacles for professional industrial applications.

Genuine Camloc components are characterized by precisely defined geometry, system compatibility, and the ability to configure fastening assemblies according to specific engineering requirements.

Function of the Camloc R4G-3 Retaining Ring

The Camloc R4G-3 is a snap-on retaining ring used to secure a mounting grommet within a panel. Installed on the rear side of the grommet, it provides mechanical retention and prevents the grommet from being pulled out of its mounting hole.

Within the Camloc D4002 quarter-turn fastening system, the mounting grommet guides the fastening stud. The R4G-3 retaining ring holds the grommet in position, while the stud and corresponding receptacle provide the actual locking function.

The R4G-3 grommet retaining ring must be distinguished from retaining washers installed directly onto fastening studs, such as the Camloc 4002-SW-SS. These components perform different functions and are not interchangeable.

Compatibility with Camloc D4002 Mounting Grommets

The manufacturer specifies the retaining ring for fastening assemblies using both flush and plus-flush mounting grommets. Examples include:

• D4002-G-AGV: flush mounting grommet for thinner panels.
• D4002-H-AGV: flush mounting grommet for increased panel thickness.
• D4002-N-AGV: plus-flush mounting grommet.
• D4002-O-AGV, D4002-P-AGV and D4002-T-AGV: additional configurations for different panel thicknesses.

The correct mounting grommet is selected according to the panel thickness and required position of the fastening stud head relative to the panel surface.

Installation with the Camloc T26 Tool

The manufacturer recommends the Camloc T26 installation tool for fitting the retaining ring. The tool enables controlled installation onto the mounting grommet and helps ensure correct seating behind its retaining shoulder.

Installation requires compliance with the manufacturer's specified panel hole dimensions. For flush-mounted grommets, the corresponding countersink geometry must also be observed.

The R4G-3 does not replace the receptacle or fastening stud. Its purpose is to retain the mounting grommet within the panel rather than act as the primary tensile load-bearing component of the locked connection.

Material and Surface Protection

The retaining ring is manufactured from zinc-plated steel with hexavalent chromium-free clear passivation. The protective finish provides resistance against ordinary atmospheric corrosion.

For applications requiring greater corrosion resistance, the manufacturer also offers stainless steel alternatives such as the Camloc V40G26-1BP and V40G26-1N, with the latter being a non-magnetic version.

Industrial Applications

Camloc retaining rings are used in removable panel assemblies, including industrial machinery service covers, technical equipment access panels, and transportation equipment structures.

Snap-on retention is particularly useful where the mounting grommet must remain securely installed in the panel during repeated removal and reinstallation of the cover.

Genuine Camloc Fastening Components from TRANS-TECHNIK

TRANS-TECHNIK supplies genuine Camloc quick-release fasteners, including mounting grommets, fastening studs, receptacles, retaining rings, and related installation accessories.

The company also provides professional technical support to help customers select compatible components and suitable fastening assemblies for their specific engineering applications.