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NSN: 2815-00-005-7530
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Cross Reference These part numbers have the same form, fit, and function of 280505au

Item Number Cage
280505AU 66289

Characteristic Codes 280505AU spec. code meanings

Code Translation
AXPK The distance from the center of the pin hole to the extreme top of the item.
BQBL An indication of whether or not a carbon groove is included.
AXFW A measurement between specified points of a cut, in distinction from height.
ABMZ The length of a straight line which passes through the center of a circular figure or body, and terminates at the circumference.
AXPM The distance between pin bosses on an item.
AXFR The finished size by which the item is commercially known and designated.
AASK The style designation indicating the configuration that most nearly corresponds to the appearance of the head.
MATT The chemical compound or mechanical mixture properties of which the item is fabricated.
AXPH An indication of whether or not an oil groove/s/ is included.
ACXM Indicates the type of oil passage included on the item.
ABKW The distance measured in a straight line from the bottom to the top of an item.
AXPN An indication of whether or not a retaining ring groove(s) is included.
AXGD The length of a straight line which passes through the center of a ring groove, and terminates at the circumference.
AXGE The below piston pin ring groove position on the item.
AXFZ The number of ring grooves included on the item.
AXGB A measurement taken at right angles to the length of a ring groove, in distinction from thickness.
AXGB A measurement taken at right angles to the length of a ring groove, in distinction from thickness.
AXPR An indication of whether or not a ring(s) is included.
AXFX An indication of whether or not a skirt bottom cutaway feature is included.
AXFT Indicates the type of skirt included on the item.
AXPL An indication of whether or not a pin hole bushing/s/ is included.
AXPQ Indicates the type of pin for which the item is designed.
ACXU The length of a straight line which passes through the center of a pinhole, and terminates at the circumference.
AXPP An indication of whether or not a pin is included.
WGHT A relative measure of the mass of an item with respect to its density.
AGYE An additional finishing process by which the surface of an item is altered in respect to polishing, grinding, and the like.

280505AU Internal Combustion Engin Piston

Mfr. Cage 66289

Specification

aluminum alloy

AXPK Distance From Pin Hole Center To Extreme Top
2.160 inches
BQBL Carbon Groove
Not included
AXFW Cut Depth
0.375 inches
ABMZ Diameter
3.375 inches
AXPM Distance Between Pin Bosses
1.375 inches
AXFR Finished Size Designation
Standard
AASK Head Style
Flat
MATT Material
Aluminum alloy
AXPH Oil Groove
Not included
ACXM Oil Passage Type
Hole
ABKW Overall Height
3.938 inches
AXPN Retaining Ring Groove
Included
AXGD Ring Groove Diameter
3.045 inches
AXGE Ring Groove Position Below Piston Pin
Number 4 ring groove located below pin bosses
AXFZ Ring Groove Quantity
4
AXGB Ring Groove Width
0.1000 inches 1st ring
AXGB Ring Groove Width
0.1560 inches 4th ring
AXPR Ring
Included
AXFX Skirt Bottom Cutaway Feature
Included
AXFT Skirt Type
Solid
AXPL Pin Hole Bushing
Not included
AXPQ Pin Type For Which Designed
Floating
ACXU Pinhole Diameter
1.1800 inches
AXPP Pin
Included
WGHT Weight
24.0 ounces
AGYE Surface Finish
Finished

Technical Definition

Piston, Internal Combustion Engin, also referenced with federal logistics item name code 16509
National Stock Number (NSN) 2815-00-005-7530

Last Modified: 02/14/2017