Machine Key Machine Key, Square End, Steel, Zinc, 2 In L, 3/8 In Sq, 4 PK

Especially useful in metal-to-metal or where heavy duty fastening is required. Machine screws are used in fastening nearly all types of hard materials.#10-24 x 1/2 in Slotted Round Machine Screw, Chrome Plated Steel, 36 PK Commonly used with flat or lockwashers..

A hex cap screw has a hexagonal head, designed to be driven by a wrench.

An internal retaining ring goes on the inside of a shaft to locate other items on the shaft, or to locate the shaft to a fixed item..

.An O-ring is a mechanical gasket in the shape of a torus; it is a loop of elastomer with a disc-shaped cross-section, designed to be seated in a groove and compressed during assembly between two or more parts, creating a seal at the interface.

.An O-ring is a mechanical gasket in the shape of a torus; it is a loop of elastomer with a disc-shaped cross-section, designed to be seated in a groove and compressed during assembly between two or more parts, creating a seal at the interface.