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

280505AU

Description: Internal Combustion Engin Piston
Mfr. Cage 66289

Specification

aluminum alloy

AASK Head Style
Flat
ABKW Overall Height
3.938 inches
ABMZ Diameter
3.375 inches
ACXM Oil Passage Type
Hole
ACXU Pinhole Diameter
1.1800 inches
AGYE Surface Finish
Finished
AXFR Finished Size Designation
Standard
AXFT Skirt Type
Solid
AXFW Cut Depth
0.375 inches
AXFX Skirt Bottom Cutaway Feature
Included
AXFZ Ring Groove Quantity
4
AXGB Ring Groove Width
0.1000 inches
AXGB Ring Groove Width
0.1560 inches 3rd ring
AXGD Ring Groove Diameter
3.045 inches
AXGE Ring Groove Position Below Piston Pin
Number 4 ring groove located below pin bosses
AXGE Ring Groove Position Below Piston Pin
Number 1,number 2,and number 3,number 4 all rings
AXPH Oil Groove
Not included
AXPK Distance From Pin Hole Center To Extreme Top
2.160 inches
AXPL Pin Hole Bushing
Not included
AXPM Distance Between Pin Bosses
1.375 inches
AXPN Retaining Ring Groove
Included
AXPP Pin
Included
AXPQ Pin Type For Which Designed
Floating
AXPR Ring
Included
BQBL Carbon Groove
Not included
MATL Material
Aluminum alloy
MATT Material
Aluminum alloy
WGHT Weight
24.0 ounces

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