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Types of Nuts Hardware

Hexagon Nuts
Hexagon Nuts

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.

Left to Right
Left to Right

Left hand nuts look like regular nuts but are threaded opposite of "standard" (right-hand) nuts. Consequently, turn them counterclockwise to install and tighten. Often abbreviated "LH" for left-hand, use left hand nuts with left hand threaded bolts, screws, studs and threaded rod.

Nut Quotation
Nut Quotation

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.

Nuts Come in Many Sizes
Nuts Come in Many Sizes

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.

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