Threaded PEM ReelFast SMT spacers/nuts are available in more thread sizes to satisfy a range of application requirements. The fasteners are suited to space or stack PCBs or (as nuts) to mount boards or attach components. They install on PC boards in the same manner and at the same time as other surface-mount components prior to the automated reflow solder process.
 
Said to reduce the risk of damage to boards (and resulting scrap) that may occur when improperly installing fasteners with off-line equipment; reduce handling of loose parts; and speed assembly by eliminating secondary operations.
 
Threaded types are offered in sizes #2-56 through #8-32 and M2 through M4; thru-hole (non-threaded) types are available in sizes .116”, .143”, 3.6 mm and 4.2 mm. Lengths range from .065 to .375” and 2 to 10 mm. All types can be installed in boards as thin as .060” and all are RoHS compliant.
 
Tape-and-reel packaging for their automated installation conforms with industry standards and preferences for other surface-mount components.  Each reel carries up to 1,500 parts, depending on fastener size.  Fasteners are supplied with Kapton patch for vacuum pickup.
 
PennEngineering, pemnet.com

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