Well nut
Encyclopedia
A well nut is a type of fastener
used to blindly fasten a piece (much like a molly bolt
) and to seal the bolt hole. It consists of a flanged neoprene
bushing
with a nut
embedded in the non-flanged end. The bolt is passed through one of the pieces to be fastened and threaded onto the nut from the flanged end. The non-flanged end is then inserted through the other piece to be fastened. As the bolt is tightened, friction
from the neoprene flange against the piece being fastened prevents the nut from turning. The bushing is compressed by the nut, forming a lip behind the piece being fastened, which compresses the fastened piece and seals the bolt hole. It can also be used in a solid workpiece. As the screw draws the embedded nut towards it, the walls of the well exert a force on the hole walls, anchoring it.
Well nuts are not particularly strong, but are useful for sealing holes and/or isolating vibrations.
The well nut was originally developed by the United Shoe Machinery Corporation.
Fastener
A fastener is a hardware device that mechanically joins or affixes two or more objects together.Fasteners can also be used to close a container such as a bag, a box, or an envelope; or they may involve keeping together the sides of an opening of flexible material, attaching a lid to a container,...
used to blindly fasten a piece (much like a molly bolt
Molly (fastener)
A molly or molly bolt, commonly misspelled moly, is a formerly trademarked name for a specialized fastener used with drywall. Larger sizes permit reasonably heavy objects, such as shelving, flatscreen TV mounts or central heating radiators to be attached to drywall in locations where there is no...
) and to seal the bolt hole. It consists of a flanged neoprene
Neoprene
Neoprene or polychloroprene is a family of synthetic rubbers that are produced by polymerization of chloroprene. Neoprene in general has good chemical stability, and maintains flexibility over a wide temperature range...
bushing
Bushing (isolator)
A bushing or rubber bushing is a type of vibration isolator. It provides an interface between two parts, damping the energy transmitted through the bushing. A common application is in vehicle suspension systems, where a bushing made of rubber separates the faces of two metal objects while allowing...
with a nut
Nut (hardware)
A nut is a type of hardware fastener with a threaded hole. Nuts are almost always used opposite a mating bolt to fasten a stack of parts together. The two partners are kept together by a combination of their threads' friction, a slight stretch of the bolt, and compression of the parts...
embedded in the non-flanged end. The bolt is passed through one of the pieces to be fastened and threaded onto the nut from the flanged end. The non-flanged end is then inserted through the other piece to be fastened. As the bolt is tightened, friction
Friction
Friction is the force resisting the relative motion of solid surfaces, fluid layers, and/or material elements sliding against each other. There are several types of friction:...
from the neoprene flange against the piece being fastened prevents the nut from turning. The bushing is compressed by the nut, forming a lip behind the piece being fastened, which compresses the fastened piece and seals the bolt hole. It can also be used in a solid workpiece. As the screw draws the embedded nut towards it, the walls of the well exert a force on the hole walls, anchoring it.
Well nuts are not particularly strong, but are useful for sealing holes and/or isolating vibrations.
The well nut was originally developed by the United Shoe Machinery Corporation.