OverviewThis economical class of self-adjusting compression latches provides a simple, fast method to secure panels with a partial turn. The spring-cam pawl compensates for wide variations in grip range, panel fit and build tolerances. Designed for industrial panel and access applications where precise compression force is not critical. Southco part variants cover multiple sizes, head styles and finishes.
Features and benefits- Cam-action spring pawl increases compression as the latch is rotated, improving panel clamping as it closes
- Serrated-spring options increase friction for improved vibration resistance
- User-adjustable compression: operator controls applied compression by rotation
- Spring-steel cam construction tolerates rough handling typical of lift-off panels
- Three-hole (round-hole) mounting accepts rivet, stud or weld installation
Available options- Stainless steel construction for corrosion-resistant applications
- Spacer options to adapt latch to different panel and frame thicknesses
- Multiple head styles and drive types (slotted, hex recess, T-bar, bail, knob, knurled, ToolHead)
- Toolhead recess keys and tool-access locking variants available (ordered separately)
Technical specifications- Series name: 57 — Spring Latch Series
- Function: Self-adjusting compression latch (spring cam)
- Mounting: Three-hole (round hole) mounting; supports rivet, stud or weld mounting
- Installation types: Rivet / Screw (Thru Hole), Weld
- Grip range: approximately 1.2 mm (0.05") to 14.3 mm (0.56") depending on model
- Size classes: Miniature, Small, Medium, Large
- Head styles: Slotted, Hex Recess, Knob, Knurled, T-Bar, Bail Handle, ToolHead Recess
- Access options: No restriction; tool (tool locking)
- Spring options: Smooth spring; Serrated spring (for higher vibration resistance)
- Materials/finishes: Steel (zinc plated, bright chromate), Stainless Steel (passivated), Copper plated
- Spacer variants: Options available to adjust for panel/frame dimensions