Model: 28373-040

Internal Combustion Engine Piston

Properties:

Head Style
Flat
Overall Height
3.500 inches
Diameter
3.250 inches
Oil Passage Type
Hole
Pinhole Diameter
Between 0.8593 inches and 0.8596 inches
Surface Finish
Finished
Finished Size Designation
Oversize
Oversize
0.040 inches
Skirt Type
Solid
Skirt Bottom Cutaway Feature
Not included
Ring Groove Quantity
4
Ring Groove Position
Number 1, number 2, number 3, and number 4
Ring Groove Width
Between 0.0955 inches and 0.0965 inches
Ring Groove Width
Between 0.0960 inches and 0.0970 inches
Ring Groove Width
Between 0.1565 inches and 0.1575 inches
Ring Groove Width
0.0955 inches and 0.0965 inches 2nd ring
Ring Groove Width
0.0960 inches and 0.0970 inches 1st ring
Ring Groove Width
0.1565 inches and 0.1575 inches 3rd ring
Ring Groove Width
0.1565 inches and 0.1575 inches 4th ring
Ring Groove Diameter
Between 2.886 inches and 2.896 inches
Ring Groove Diameter
Between 2.896 inches and 2.906 inches
Ring Groove Diameter
2.886 inches and 2.896 inches 2nd ring
Ring Groove Diameter
2.886 inches and 2.896 inches 3rd ring
Ring Groove Diameter
2.886 inches and 2.896 inches 4th ring
Ring Groove Diameter
2.896 inches and 2.906 inches 1st ring
Oil Groove
Not included
Distance From Pin Hole Center To Extreme Top
Between 1.995 inches and 2.000 inches
Pin Hole Bushing
Not included
Distance Between Pin Bosses
1.380 inches
Retaining Ring Groove
Included
Pin
Included
Pin Type For Which Designed
Floating
Ring
Included
Carbon Groove
Not included
Material
Aluminum alloy
Material
Aluminum alloy
Weight
18.9 ounces
NSN
2805-00-377-5647
Part Number
28373-040
Description
Piston,internal Combustion Engine
CAGE
78640

Part 28373-040 NSN 2805-00-377-5647

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
16509
FIIG:
T267-C
Concept No.:
1
App. Key:
CA
Cond. Code:
2
Status:
A

Material Classification

Hazardous material, precious metals, criticality, enviroment, and electrostatic discharge indicators
HMIC
PMIC
ESD/EMI
ENAC
MMAC
CRITL
HMIC:
N
PMIC:
U
ESD:
ESD:
MMAC:
CRITL:
X

Freight Classification

NMFC
UFC
LTL
LCL
WCC
TCC
SHC
ACC
NMFC:
133300
UFC:
63220
LTL:
RATING VARIABLE
LCL:
--
WCC:
593
TCC:
Z
SHC:
9
ACC:
Trailers/Vehicles

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Schedule B and Export
  • Schedule B: 8409918000
  • SITC: 71391
  • End Use: Industrial engines
  • NAICS: 333618
  • USDA: 1

Freight Class: Parts for spark-ignition internal combustion piston engines, nesoi

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