W20874

Recessed Washer

NSN 5310-00-550-1383

DEMIL
Shelf Life
UOM
NIIN
Demil:
NO
Shelf Life:
UOM:
NIIN:
005501383

Technical Specifications of NSN

Hole Diameter:
Between 0.438 inches and 0.442 inches
Outside Diameter:
Between 0.807 inches and 0.817 inches
Overall Height:
Between 0.169 inches and 0.173 inches
Recess Depth:
Between 0.044 inches and 0.048 inches
Material Thickness:
Between 0.167 inches and 0.177 inches
Hardness Rating:
Between 36.0 rockwell c and 40.0 rockwell c
Surface Finish:
63.0 microinches counterbore face
Surface Finish:
63.0 microinches bottom
Surface Finish:
63.0 microinches top
Heat Treatment:
As fabricated
Material:
Steel comp 410 or steel comp 416
Material Specification:
Aisi assn standard single material response or aisi assn standard single material response
Surface Treatment:
Passivate
Style Designator:
Recessed
NSN:
5310-00-550-1383
Item Name:
Washer,counter
Cage Code:
70255

Other Related Parts

Part Number
Cage
RNCC
RNVC
RNAAC
Status
MSDS
SADC
Part Number:
2318-49-1
Cage Code:
70255
RNCC:
3
RNVC:
2
RNAAC:
9Z
Status:
A
MSDS:
SADC:

Part Identification

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
15933
FIIG:
A022B0
Concept No.:
1
App. Key:
A
Cond. Code:
1
Status:
A

Part Materials

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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Privacy | Terms

Definition Definition of approved item name (AIN): "Counter Washer"

A washer of any peripheral shape having a centrally located hole. Both bearing surfaces are parallel and flat, but one or both of the bearing surfaces must be broken by a counterbore, countersink, or similarly shaped recess. The thickness must not exceed 25 per cent of the outside diameter or the largest outside dimension. The maximum limit of the tolerance or range applied to the thickness and/or largest outside dimension must be used to determine compliance. Excludes washer, concave, retainer, packing, and thrust type washers. See also spacer, sleeve; and spacer, stepped.

MOE Major Organizational Entities

Entity
DSOR
User:
AUSTRALIA Australia
DSOR:
User:
GERMANY Germany
DSOR:
Import / Export
  • Schedule B: 7318220000
  • SITC: 69422
  • End Use: Finished metal shapes
  • NAICS: 332722
  • USDA: 1

Classification: Washers other than lock washers, iron or steel


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