Captive Screws
Captive screws are used to secure mounting screws to the device so they are not dropped or lost when the screws are undone. Captive screws may be found on card front panels which are used to secure the front panels to the equipment chassis. If a door is used to hide or protect the cards within the chassis, than captive screws may also be found securing one or more sides of the door. Captive screws may also be found on a front panel of a module to secure a chassis to an equipment rack, so as the module is removed from the rack the screws stay with the chassis and not set aside.
Captive Screw Manufacturers
Above Board
Electronics
{Captive Panel Screws}
Alcoa Inc.
{Captive Panel Screws}
ASM
{Binding Head, Extended Knurled, Fillister, Flat Head, Knobbed}
Keystone Electronics Corp.
{Stainless steel 4-40, 6-32, 8-32 Threads}
Northern Technologies Corp
{#4-40, RoHS, Captive Screws}
Southco.
{Captivation styles, Spring-ejected, Miniature, heat transfer, Captive Nuts}
Elapsed Time Indicators; next page in designing an equipment chassis
How To Specify a Equipment Chassis; Chassis Design Index page
