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NSN: 5310-00-001-1843
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Part Numbers

Item Number Item Description
123HM10019-511 Nut, Plain, Hexagon

Master Requirement Codes

Code Translation
AGGP The length of a straight line which passes through the center of a drilled hole, and terminates at the circumference.
CSXL Designates the specific roughness rating of the bearing surface, representing the arithmetic average deviation of the surface from the meanline in profile.
CRTM Indicates the type of bearing surface.
CRSQ The included angle of the countersink.
CRHC The style designation that most nearly corresponds to the appearance of the hole configuration.
ALET Indicates the type and number of holes provided.
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.
MDCL The specification, standard, or manufacturers reference, and the classification designation, such as class, condition, temper, and the like, that identifies the material.
ASDB The shortest straight line between flats, perpendicular to the height.
STDC The specification, standard, or manufacturers reference, and the classification designation, such as type, class, grade, and the like, that identifies the surface treatment material.
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.

123HM10019-511 Hexagon Plain Nut

Cage 26512

Technical Definition

Nut, Plain, Hexagon, also referenced with federal logistics item name code 01857 - A nut, flat on top and bottom having 6 flat sides. for items which have internal tapered or straight (parallel) pipe threads, specific electrical conduit size designation, and which when installed, provide a method of tightening to lock the connection, see locknut, electrical conduit. see also locknut, tube fitting. for items having a thickness (or height) exceeding two times the width across the flats, use post, electrical-mechanical equipment. (when height or thickness and/or width across the flats is designated as a tolerance dimension, the maximum dimension will be used to determine compliance.)

Technical Characteristics

Drilled Hole Diameter (AGGP):
0.068 inches nominal
Bearing Surface Finish (CSXL):
125.0 microinches
Bearing Surface Type (CRTM):
Flat
Countersink Angle (CRSQ):
120.0 degrees nominal nut
Hole Configuration Style (CRHC):
Configuration b
Hole Type And Quantity (ALET):
3 drilled
Material (MATT):
Steel comp 410 overall
Nominal Thread Size (CQJX):
1.750 inches
Nut Height (ADEA):
0.328 inches minimum and 0.358 inches maximum
Nut Style (ACTA):
Hexagon
Material Document And Classification (MDCL):
Ams 5612 assn std single material response overall
Width Across Flats (ASDB):
2.222 inches minimum and 2.252 inches maximum
Surface Treatment Document And Classification (STDC):
Qq-p-35 fed spec single treatment response overall
Surface Treatment (SFTT):
Passivate overall
Thread Class (AAJD):
3b
Thread Direction (AAJF):
Right-hand
Thread Quantity Per Inch (CMLP):
16
Thread Series (BZRR):
Unj

National Stock Number (NSN)

5310-00-001-1843