Captive knurled screw YD-47/4C series

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.

As one of the most popular  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

PRISM SERIES  series flare-in style panel fasteners  ssemblies 4C-PH，4C-TS，4C-PS

Color match captive screws to your industrial design； High strength screw for use with high torque drivers；Thread sizes#4 to #10 and M3 to M5.