47/4C - Captive Screws

47/4C - Captive Screws

Southco 47 Class captive screws (and the corresponding color-coded "Prism" 4C Class captive screws), offer hundreds of permutations of installation and tool-actuation styles for mounting doors, panels, and other hardware components in limited-space applications.

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As one of the most popular Southco fastener styles, these versatile captive screws have evolved to provide numerous features to satisfy unique fastening hardware application needs:

  • Standard Phillips and Torx® recesses as well as combination recesses available
  • Screw head doubles as knob for hand actuation
  • Stylized knob for hand actuation, and ratchet-mechanism or smooth knobs for restricted access
  • Spring ejected design retracts threads when not engaged
  • Heat-treated steel screw provides superior torque strength
  • "Prism" colored fasteners enable you to coordinate hardware to your design scheme or to differentiate access points through color

Available Options

  • Self-clinching and flare-in installation styles
  • Surface Mount Technology (SMT) installation style enables hardware to be attached during reflow process
  • Stainless steel materials and special finishes available for added corrosion resistance
  • Plating options to meet aesthetic and application requirements
  • Different materials available to suit strength requirements

Standards and Specifications

  • Restricted-Access Series and smooth-knob options help to meet UL-1950, IEC-950, and EN-60950 standards

Industry Applications

  • Computers
  • Electronic Enclosures
  • Exhibits/Signs
  • Food Equipment
  • Industrial Enclosures
  • Medical
  • Networking
  • Telecommunications

  • Available in standard colors (black, blue, purple, red, green)
  • Also available in custom colors to match the knob to your specifications, product styling, and color scheme
  • Prism knobs eliminate problems with scratches on painted and powder-coated hardware
  • Black powder coat finish also available

Black
Blue
Purple
Red
Green
Restricted Access
Ratchet mechanism reduces the risk of unauthorized access, provides convenient assembly by hand but removal by tool only
Styled Knob
Designed for hand operation, in a variety of sizes, recesses, and installation options
Smooth Knob Finish
Makes knob difficult to grip, helps to restrict access
Slotted
Common recess style
Phillips
Better tool retention, meets some limited access restrictions
Phillips/Slot Combination
Combines better tool retention with convenience of a slotted recess
Torx®
Higher torque transfer, reduced cam-out, for high-speed assembly and longer tool life
Torx®/Slot Combination
Combines better tool retention with convenience of a slotted recess