An internal wrenching nut, (also known as an Allenut or Allen nut), is a cylindrical nut that is internally threaded on one side and has an Allen socket...

A wrench or spanner is a tool used to provide grip and mechanical advantage in applying torque to turn objects—usually rotary fasteners, such as nuts and...

torque wrench is a tool used to apply a specific torque to a fastener such as a nut, bolt, or lag screw. It is usually in the form of a socket wrench with...

Castellated nut Distorted thread locknut Centerlock nut Elliptical offset locknut Toplock nut Interfering thread nut Tapered thread nut Jam nut Jet nut (K-nut) Keps...

spoke and nipple are functionally equivalent to a bolt and a nut. However, unlike a typical nut-and-bolt pair, a spoke and nipple do not join two parts (the...

normal forces between the bolt's external threads and the internal threads of the matching nut (not objects to be fastened, which is what allows the bolt...

through the knockouts of two boxes, and is secured by an internally threaded ring called a lock nut. Chase-Shawmut Company, of Boston, is the company which...

Prevailing torque nuts (locknuts) An insert on the internal threads (either metallic or non-metallic, e.g. Nyloc nut) or a plug/patch of non-metallic material...

drive for locations where surrounding obstacles limit wrenching access, because smaller wrench-swing arcs can still successfully rotate the fastener....

protrusions bite into the wood, preventing the nut from either turning or pulling out. They are threaded internally and externally, the former provides stability...

screw head (that is, drive types) were simple internal-wrenching straight slots and external-wrenching squares and hexagons. These were easy to machine...

break. The appropriate special nut is then attached to the end of the extractor. The nuts can then be turned with a wrench to remove the screw. Straight...

tighten the nut first by hand until it is too difficult to continue and then tighten the nut one half-turn more with the aid of a wrench; the actual amount...

easily driven with a spanner or wrench, ideal for heavy-duty applications. Square head fasteners: Offering increased wrenching area and reduced risk of rounding...

on a bolt) will pass through easily to connect to an internally threaded component (e.g. a nut) on the other side. That is, an M6 screw has a nominal...

equipped with a hex nut measuring 5⁄16 inch (0.3125 inch / 7.9 mm) across opposite flats, thus taking the same wrench as a #6 SAE hex nut. A standard-polarity...

nut is a nut with a knurled outside surface. This facilitates tightening by hand (thumb nut) or secures the nut into a handle or cover (insertion nut)...

headset distinguishable by the way the bearings are held in place (with a lock nut or with a clamping stem), or by where they are located (inside or outside...

the ones on an internal surface are considered female. For example, a screw has male threads, while its matching hole (whether in nut or substrate) has...

against leakage. The stem may be provided with a shroud over the packing nut to prevent foreign bodies entering the packing material, which would accelerate...

interface. The retaining nut requires a large amount of torque to secure, therefore a long-handled torque wrench or a powerful impact wrench (also called a "wheel...

needed. It consists of three parts: a nut, a female, and a male end. When the female and male ends are joined, the nut seals the joint by pressing the two...

lock nut. Hex (or Allen) keys are used on the various hex bolts on the stem, top cap and handlebars. A star nut setter is used to set the star nut inside...

may be either removed once the actual nut is threaded into place or left in place, in the case of a hydraulic nut. The belt or chain tension on a single-speed...

using a spindle Open-end wrench, a one-piece wrench with a U-shaped opening that grips two opposite faces of the bolt or nut Open End (1958–1966), the...

the joint would typically need to be tightened by crane wrenching. Jackbolts push a threadless nut against a retainer ring, which is fitted into a groove...

 0.31 or 0.47 in). The collet nut is hexagonal on the outside so it can be tightened or loosened with a standard wrench, and has threads on the inside...

the valve, the internal parts are put into the body and then the bonnet is attached to hold everything together inside. To access internal parts of a valve...

of the pipeline. Internally based systems use field instrumentation (e.g. for flow, pressure and fluid temperature) to monitor internal pipeline parameters...

specifically to make the job easier. Specialized plumbing tools include pipe wrenches, flaring pliers, pipe vise, pipe bending machine, pipe cutter, dies, and...