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Nuts

What is a nut?

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. There are thousands of style, material and plating combinations.

(CLNU)
Barrel Nuts Break Away Nuts
Barrel Nuts, Truss Head, One-Way Slotted Drive, Steel, Chrome Plated
Nuts - Break Away Nuts
Cage Nuts Cap Nuts
Nuts - Cage Nuts
Nuts - Cap Nuts
Heavy Hex Structural Nuts Heavy Square Nuts
Nuts - Heavy Hex Structural Nuts
Heavy Square Nuts, Steel, Plain
Hex Coupling Nuts Hex Nuts
Nuts - Hex Coupling Nuts
Nuts - Hex Nuts
Internal Wrenching Allen Nuts Knurled Nuts
Nuts - Internal Wrenching Allen Nuts
Nuts - Knurled Nuts
Lifting Ring Eye Nuts Lock Nuts
Nuts - Lifting Ring Eye Nuts
Nuts - Lock Nuts
Panel Nuts Round Nuts
Panel Nuts, Steel, Zinc Plated
Nuts - Round Nuts
Self-Clinching Nuts Shaft Ring Nuts
Nuts - Self-Clinching Nuts
Nuts - Shaft Ring Nuts
Square Machine Screw Nuts Square Nuts
Nuts - Square Machine Screw Nuts
Nuts - Square Nuts
Steel Spring Nuts T-Nuts
Nuts - Steel Spring Nuts
Nuts - T-Nuts
T-Slot Nuts Weld Nuts
DIN 508, Metric, T-Slot Nuts, Class 10 Steel, Black
Nuts - Weld Nuts
Wheel Nuts Wing Nuts
Wheel Nuts, Right Hand Thread, Steel, Zinc Plated
Nuts - Wing Nuts
In applications where vibration or rotation may work a nut loose, various locking mechanisms may be employed: Adhesives, safety pins or lockwire, nylon inserts, or slightly oval-shaped threads. The most common shape is hexagonal, for similar reasons as the bolt head - 6 sides give a good granularity of angles for a tool to approach from (good in tight spots), but more (and smaller) corners would be vulnerable to being rounded off. Other specialized shapes exist for certain needs, such as wing nuts for finger adjustment and captive nuts for inaccessible areas.  Nuts are graded with strength ratings compatible with their respective bolts; for example, an ISO property class 10 nut will be able to support the bolt proof strength load of an ISO property class 10.9 bolt without stripping. Likewise, an SAE class 5 nut can support the proof load of an SAE class 5 bolt, and so on. The proof strength of the most common property classes is listed at bolted joint.
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