Abstract： ASME B18.2.2:2022 pdf download.Nuts for General Applications: MachineScrew Nuts; and Hex,Square,Hex Flange,and Coupling Nuts(lnch Series). GENERAL NOTES: (a) For additional requirements, refer to sectIon 3. (b) concentricity of Topped hole....

ASME B18.2.2:2022 pdf download.Nuts for General Applications: MachineScrew Nuts; and Hex,Square,Hex Flange,and Coupling Nuts(lnch

Series).

GENERAL NOTES:

(a) For additional requirements, refer to sectIon 3.

(b) concentricity of Topped hole. Axis of tapped hole shall be concentric with axis of nut body within a tolerance equal to 3% (6% FIM) of the maximum width across flats.

(c) Countersink. Tapped hole may be countersunk on both faces.

(d) When specified by the purchaser, different thread sizes or senes shall be tapped into the nut from opposite ends with each

thread extendinglo approxiniately 0.511. All other nut dimensions shall comply with this table unless otherwise agreed to by the

supplier and purchaser,

(e) The dimensions in this table are considered standard, hut purchasers may specify across flats sizes and/orlengths that differ

from this table.

(f) Hex coupling nuts must conlorm to the proof load requirements of ASTM A5.63. Grade A for heavy hex tiuts.

NOTE: (1) Nuts shall be furnished without a hole, unless specially ordered by the purchaser. In some applications, it may be

desirable to ensure that the threaded parts joined by.a coupling nutare each engaged to approximately one-half nut thickness. As a visual inspection aid, a hole drilled through one sideof the nut is reommended. The hole should be located at mid-nut thickness

and have a diameter oIO,2 to 0.4 times nominal nut size for sizes 2112 in. and smaller, and I in. for sizes 2114 in. and larger.

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