Hex Nuts
Hex nuts are the most common six-sided fasteners with internal threads, screwing on to the shank of a bolt or a hex cap screw. Machine screw nuts are hex nuts that are designed to mate with machine screws, generally used in metal fastening. Left hand hex nuts feature reversed threads, so tightening is accomplished by spinning counterclockwise. Panel hex nuts are thinner, low-profile nuts used in small, confined spaces.
Jam Nuts
A jam nut is a low profile type of nut, approximately half as tall as a standard nut. Commonly used as a type of locknut, where the jam nut is "jammed" up against a standard nut to lock both into place. Jam nuts are also used in applications where the height of a standard nut would not fit.
Serrated Flange Nuts
Serrated flange nuts have a wide flange at one end that acts as a fixed, integrated washer, which helps distribute the pressure of the nut over the part being secured. The serrated surface on the underside of the flange provides a locking mechanism by angling into the substrate to keep the nut from rotating in the loosening direction.
Coupling Nuts
Coupling nuts are elongated, six-sided fasteners with internal threading that are used to join threaded rods, pipes or other threaded parts, sometimes including different sized parts.
Acorn Nuts
Acorn nuts, sometimes referred to as cap nuts, feature a domed head that offers protection to the screws and bolts that the nut is mating with, preventing stripping and sometimes corrosion. This protections allows the screw to be reused after maintenance.
Wing Nuts
Wing nuts are one of the only nuts that can be completely tightened or loosened by hand, making them ideal in applications where frequent assembly/disassembly or adjustments are needed. Wing nuts are popular for use in furniture, musical instruments such as drum kits, and any products with interchangeable parts.
Spring Nuts
Spring nuts, or speed nuts as they are commonly referred to, save time in assembly applications because they are singular, self-locking nuts that prevent loosening of screws during vibration. Spring nuts come in seeral styles, such as flat, J, U and rectangular.
Tee Nuts
Tee nuts feature a head style that digs into the surface to ensure retention and leave the nut flush with the surface, and are commonly used in furniture to provide an internally threaded surface for fasteners. Tee nuts can be used in materials like wood, composites, and particle board.
Cross-Dowel Nuts
Cross-dowel nuts are used in applications where very strong joints are needed. They can withstand high torque values to create an extremely secure right angle joint, and the slot in end simplifies alignment with bolt.
Insert Nuts
Like a wall anchor, an insert nut creates a threaded socket for a wooden workpiece. Insert nuts can be either screwed or hammered into a pre-drilled hole to be seated. Whether insert nuts are seating by screwing or hammering, the external threads grip into the wood substrate, preventing turning or pull-out.