Model: NA0179B-120C

Recessed Washer

Properties:

Hole Diameter
Between 12.6 millimeters and 13.0 millimeters
Outside Diameter
Between 21.9 millimeters and 22.5 millimeters
Recess Diameter
Between 14.7 millimeters and 15.1 millimeters
Material Thickness
2.0 millimeters
Recess Angle
Between 44.0 degrees and 46.0 degrees
Material
Iron alloy 660
Material Specification
Ams 5525 assn standard single material response or ams 5732 assn standard single material response or ams 5736 assn standard single material response
Surface Treatment
Passivate
Surface Treatment Specification
Qq-p-35 federal specification single treatment response
NSN
5310-01-475-2399
Part Number
NA0179B-120C
Description
Washer,recessed
CAGE
80205

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.

Part NA0179B-120C NSN 5310-01-475-2399

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
15933
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:
A
ESD:
A
ESD:
A
MMAC:
CRITL:
X

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Schedule B and Export
  • Schedule B: 7318220000
  • SITC: 69422
  • End Use: Finished metal shapes
  • NAICS: 332722
  • USDA: 1

Freight Class: Washers other than lock washers, iron or steel

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