bisco industries Blog

Product Spotlight: Southco AC Actuators

Introducing Southco’s AC Series Actuators

Southco’s AC Series of actuators completes Southco’s system for remote actuation of light, medium, and heavy-duty rotary latches using a cable connection. Multiple cable placement options satisfy in-line and perpendicular cable orientations. Ample hand-grip promotes easy user operation while low protrusion improves enclosure aesthetics.

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Product Spotlight: Southco R4-EM-9 Rotary Locks

Southco’s R4-EM-9 Series electromechanical rotary locks provide key features that are ideal for security monitoring on applications such as buses, RVs, point of sale product enclosures, and data storage/server enclosures. R4-EM-9 series locks are controlled by a microprocessor that provide the attached signal device with the lock status. For example, if the lock is connected to an electronic keypad the screen will show if the latch is open or locked.

R4-EM-9 Lock Settings

The R4-EM-9 rotary lock offers both auto relock or delayed relock settings.

Auto Relock

In this mode a signal device (such as a computer or keypad) is used to unlock the latch. When the door is pushed back to the closed position the latch automatically locks.

Delayed Relock

Like auto relock mode, the delayed relock mode uses a signal device to release the latch and open the door. However the delayed relock mode differs in that the signal device must also be used when closing the door. When the door is pushed shut the user must then use the signal device (keypad, computer, etc.) to reengage the lock and secure the door.

Additional R4-EM-9 Lock Features

  • Simple two-hole installation
  • Minimal power draw (energy efficient)
  • Accommodation for existing control systems
  • High electromechanical release load – (latch has a high resistance to breakage when force is applied.)
  • Kick-out spring door assist (optional for delayed relock versions)

R4-EM-9 Part Configuration

Part configuration for the R4-EM-9 series electronic locks is relatively simple. By referring to the figure below you can identify the complete part number by selecting a trigger style and base mounting style. For additional details checkout the Southco R4-EM-9 rotary lock spec sheet.

R4-EM-9 Product Configurator - Southco

Availability & Pricing for R4-EM-9 Series Electromechanical Rotary Locks

bisco industries is your local authorized distributor for Southco R4-EM-9 series locks. Visit to request pricing and availability at the click of a button.


What is a Draw Latch?

Draw Latch Description

Draw latches operate on the principle of drawing two items together using tension. The main components of a draw latch assembly are the blade (a hooked plate or a wire formed loop), the keeper (a hooked plate that receives the blade), and the hinge. The tension is created when the blade is hooked to the keeper and clamped down. For typical draw latches the tension is released when the latch is rotated to a vertical positon and is applied when the latch is rotated to a horizontal position.

Draw Latch Styles

Despite shared functionality, draw latches come in many different styles.

Draw Latch Applications

Because of the simplicity and effectiveness of draw latches they are utilized in a large number of applications. Draw latch applications include HVAC systems, exhibits, signs, agricultural equipment, industrial machinery, trucks, and lawn/garden equipment.

Learn More About Draw Latches

For more information about draw latches view these helpful catalog pages from Southco or contact bisco’s product support team.

Where to Buy Draw Latches

bisco industries offers a wide selection of draw latches from leading access hardware manufacturer, Southco. Visit to buy rotary draw latches, over-center draw latches and more.

bisco Retains Premier Status with Southco

For the second year in a row, bisco industries has achieved premier status as a Southco authorized distributor. bisco’s overall Southco revenue growth, expanded marketing efforts, and training engagements were all key elements in securing Southco premier status for 2016.

Benefits of Southco Premier Status

As a premier authorized Southco distributor bisco is able to provide clients with special pricing even compared to other authorized Southco distributors. In addition, premier status enables bisco to provide faster delivery by stocking more Southco product in bisco’s seven North American distribution centers.

About Southco

Southco is the leading manufacturer of engineered access hardware solutions, including a wide variety of latches, locks, captive fasteners, quick access fasteners, hinges, and handles. Southco’s products are used for applications in the networking, telecommunications, computer, automotive, aerospace, mass transit, construction, industrial machinery, marine and HVAC industries. Southco is committed to connecting, creating and innovating to provide the best solution for every access engineering problem.

Find Southco Product Info & Stock

For more information on Southco products, to browse by product attribute, and to find pricing online visit the Southco microsite on

Product Spotlight: Southco Dual Trigger Rotary Latch

Southco Compact Rotary Latch Features Dual Trigger Actuation

Southco’s new R4-10 rotary latch with dual trigger features a compact design with numerous points of actuation, allowing the latch to be triggered by two independent actuators. The Dual Trigger R4-10 is an ideal solution for doors and panels that require actuation from multiple locations.  A simple application example is a door that requires access from both the inside and outside. Using a R4-10 dual trigger latch allows the latch to be turned (actuated) from either side of the door providing easy entry and exit. For more technical information view the R4 rotary latch catalog page.


Authorized Southco Distributor

In addition to the R4 rotary latches Southco offers a broad range of engineered access hardware solutions to meet unique application requirements. bisco industries is your authorized source for Southco, offering a full service e-commerce website as well as a team of local service reps. Contact us today!

Southco Introduces New Vibration Resistant Rotary Latch

Southco’s new R4-10 rotary latch features an integrated rubber bumper that eliminates noise and vibration caused by normal operating conditions. The R4-10 rotary latch is available in single and two-stage options and features a design that traps the striker between a rubber bumper and the rotor. Without the extra clearance or room to move, any potential noise caused by metal-on-metal movement or vibration is eliminated.

Key Features of the R4-10 Rotary Latch

  • Integrated bumper eliminates noise and vibration
  • Two-stage cam design prevents false latching
  • Provides concealed latching with push-to-close convenience
  • Compact design minimizes protrusion within enclosure applications
  • Allows remote actuation when paired with Southco cables and actuators
  • View detailed specs

bisco industries is an authorized Southco distributor. We offer online pricing on hundreds of Southco items as well as a complete listing of all Southco products. Among the many Southco items we offer are compression latches, hinges, and captive screws. Visit today to find the right Southco item for your application.

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