Nuts

A nut is a type of fastener with a metric threaded hole and is often paired with a bolt or screw to fasten one part to another. The nut and bolt or screw are kept together and secured by the threads. Offered in many different styles for your commercial and industrial needs. Available and ready-to-ship in a variety of sizes and finishes. Browse our selection of nuts for your building projects and industrial applications.

Here at BW Industrial Sales, your satisfaction is our number one priority! If you have any questions about nuts or any other manufacturing parts and tooling, please contact our experienced and qualified BW Industrial Sales staff; or call us at 626-358-1836 for an immediate response.


Cage Nuts:  A free floating square nut retained within a spring steel cage.  The cage has two retaining legs on the same side of the nut, positioned 180 degrees from each other, that hold the nut in place at panel edges or center panel. A free -floating nut will compensate for poorly aligned holes. The square cage design keeps the nut from rotating during tightening.

Coupling:  A coupling is a mechanical fastener used to connect two parts of equal thread diameter and pitch. A hex coupling, also referred to as a rod coupling, is a double chamfered hex nut available in various widths and lengths. A round coupling is a cylindrical mechanical fastener that is completely threaded internally, from one end through to the opposite end. Round couplings are used when a smooth outer appearance is preferred.

Hex Jam:  A six-sided internally threaded, fastener with a metric thread pitch. Jam nuts are chamfered on the top and on the bearing surface. Used in assembly with a metric machine screw to fasten one part to another and secured by the threads when mated together. 

Knurled Thumb:  A knurled thumb nut is an internally threaded barrel-shaped fastener integrally formed with a pancake-shaped top, which has a knurled edge to facilitate manual tightening and loosening. Designed to be easily tightened and loosened by hand.

Square Nut:  A four-sided, internally metric threaded fastener with a flat bottom side and a chamfered, washer-crowned top. Designed for use with square bolts for a rustic look in a new structure or to match existing fasteners in older structures.

Thin Square Nut: A four-sided, internally metric threaded fastener with the top and bottom being flat and without chamfer. Offers a greater bearing surface for wrenching than hex nuts.

Low-Type Hex Cap:  A one-piece hex nut with a low-profile dome-shaped top and a threaded hole at the opposite end. Cap nuts serve two main purposes; as decorative pieces and as covers for projecting threads. The low-type cap nut is chosen when there is limited clearance space above the nut.

Hex Nut:  A hex nut is a six-sided, internally threaded metric fastener, designed for use with bolts, studs, screws, and other externally threaded products. A hex nut is the most commonly used nut. 

Domed Hex Cap:  A one-piece hex nut with a dome-shaped top (similar in shape to an acorn) and a threaded hole at the opposite end. Designed for decorative purposes and also used as covers for protecting threads.

Hex Flange:  A hex nut with an enlarged circular base flaring out from the bottom of the nut, and a metric threaded pitch. The bearing surface of the flange is smooth. The flange design will span oversized or poorly aligned holes and provides a more uniform bearing-stress to clamp-force ratio.

Nylon Insert Hex Flange:  A hex nut with a nylon-filled collar at its back end and an enlarged circular base flaring out from the front end of the nut. When an externally threaded fastener reaches the collar, the threads and nylon form a tight, frictional fit as the nylon applies downward pressure that forces contact between the internal and external threads. They can withstand extreme vibrations without loosening.

Top Lock Flange:  An all-metal, one-piece hex nut with a flange on the bottom side. The fastener derives its prevailing torque characteristics from controlled distortion of its top threads from their normal helical form to a more elliptical shape. They are reusable and can withstand severe vibration and shock loads. 

External Locknut “K”:  A hex nut with metric thread pitch, pre-assembled with a free spinning external tooth lock washer. The locking action is achieved when the nut is tightened against a bearing surface as the teeth of the lock washer dig into it. Most popular type of locknut because of its versatility, cost and ease of installation.

Nylon Insert Locknut:  A hex nut with a metric thread pitch and a nylon-filled collar at its back end. When a screw reaches the collar, the threads and nylon form a tight, frictional fit, restricting movement of the screw when it is subjected to vibration. 

Serrated Hex Flange:  A hex nut with an enlarged circular base flaring out from the bottom of the nut. The bearing surface of the flange has serrations which displace material on the mating surface when the nut is wrenched into place, forming a connection which resists loosening. Requires a greater amount of torque to loosen than to tighten the nut.

Weld Nuts:  A weld nut is designed to be welded to another steel part. Weld nuts come in numerous shapes, thicknesses, configurations and sizes. One advantage to weld nuts is they can be used in restricted space areas. Another advantage is they form the strongest bonds when compared to mechanically clinched fasteners.

Wing Nuts:  A wing nut is a nut with a metric thread pitch and wings set 180 degrees apart from each other which allows the part to be manually turned. Designed for when a part is frequently assembled and disassembled at a place where torque greater than that achieved with finger pressure is not needed.