Model: 221289N12

Shouldered And Recessed Washer

Properties:

Hole Diameter
Between 3.150 inches and 3.152 inches
Shoulder Diameter
Between 3.515 inches and 3.525 inches
Outside Diameter
Between 3.868 inches and 3.873 inches
Shoulder Height
Between 0.201 inches and 0.202 inches
Material Thickness
Between 0.208 inches and 0.211 inches
Hardness Rating
29.0 rockwell c
Recess Angle
45.0 degrees
Surface Finish
32.0 microinches bottom
Surface Finish
32.0 microinches inner
Surface Finish
32.0 microinches top
Surface Finish
8.0 microinches shoulder face
Material
Steel
Material Specification
Ams 6322 assn standard single material response
Style Designator
Shouldered and recessed
NSN
5310-00-285-8483
Part Number
221289N12
Description
Washer,shouldered And Recessed
CAGE
0AHP5

A washer, round in shape, having a centrally located hole. One bearing surface is flat, the other surface is in the form of a raised shoulder (boss) having a flat bearing surface. Either or both of the bearing surfaces must be broken by a counterbore, countersink, or similar shaped recess. The thickness of the shoulder (boss) must not exceed 25 percent of the shoulder (boss) diameter. For items having a shoulder (boss) of greater thickness, use bearing, sleeve; bushing, sleeve; or spacer, sleeve. Excludes insulator, washer and thrust type washers.

Part 221289N12 NSN 5310-00-285-8483

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
15935
FIIG:
A022B0
Concept No.:
1
App. Key:
A
Cond. Code:
1
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:
194160
UFC:
55210
LTL:
50.0
LCL:
50.0
WCC:
713
TCC:
Z
SHC:
9
ACC:
Construction Materials

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Schedule B and Export
  • Schedule B: 7616108000
  • SITC: 69440
  • End Use: Finished metal shapes
  • NAICS: 332722
  • USDA: 1

Freight Class: Cotters, cotter-pins, washers and similar articles, of aluminum

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