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Part Numbers

Item Number Item Description
237-0404-000 Nut, Plain, Knurled

Master Requirement Codes

Code Translation
CRSQ The included angle of the countersink.
MATT The chemical compound or mechanical mixture properties of which the item is fabricated.
CQJX A designation that is used for the purpose of general identification of the thread.
ACTA The style designation indicating the configuration that most nearly corresponds to the appearance of the nut.
ADBG A measurement between the opposite flat surfaces of the nut, in distinction from length or width.
MDCL The specification, standard, or manufacturers reference, and the classification designation, such as class, condition, temper, and the like, that identifies the material.
FEAT Those unusual or unique characteristics or qualities of an item not covered in the other requirements and which are determined to be essential for identification.
ASDB The shortest straight line between flats, perpendicular to the height.
SFTT The metallic, nonmetallic, and/or chemical properties with which the item is plated, dipped, and/or coated.the treatment is designed to protect the surface(s) and cannot be wiped off.
AAJD A numeric-alpha designator indicating the pitch diameter tolerance and an external or internal thread.
AAJF The direction of the thread when viewed axially. a right-hand thread winds in a clockwise direction while a left-hand thread winds in a counterclockwise direction.
CMLP The number of threads on the item per linear inch measured on a line parallel to the thread axis.
BZRR A designation indicating the diameter-pitch combination and the number of threads per measurement scale applied to a series of diameters.

237-0404-000 Knurled Plain Nut

Cage 71468

Technical Definition

Nut, Plain, Knurled, also referenced with federal logistics item name code 15886 - A nut, round in shape, having all or part of its outer surface knurled. it may have provisions for external wrenching. for items having a thickness (or height) exceeding two times the outside diameter, use post, electrical-mechanical equipment. see also nut (1), plain, round. (when height or thickness, and/or outside diameter is designated as a tolerance dimension, the maximum dimension will be used to determine compliance).

Technical Characteristics

Countersink Angle (CRSQ):
90.0 degrees nominal both ends
Material (MATT):
Aluminum alloy 2017 overall
Nominal Thread Size (CQJX):
0.750 inches
Nut Diameter (ACTD):
0.908 inches minimum and 0.928 inches maximum
Nut Style (ACTA):
Nut Thickness (ADBG):
0.172 inches nominal
Material Document And Classification (MDCL):
Qq-a-225 fed spec single material response overall
Special Features (FEAT):
Color olive drab
Width Across Flats (ASDB):
0.856 inches minimum and 0.861 inches maximum
Surface Treatment (SFTT):
Cadmium overall
Thread Class (AAJD):
Thread Direction (AAJF):
Thread Quantity Per Inch (CMLP):
Thread Series (BZRR):

National Stock Number (NSN)