Model: 4D0028C3

Recessed Washer

Properties:

Hole Diameter
Between 0.191 inches and 0.195 inches
Outside Diameter
Between 0.362 inches and 0.372 inches
Recess Diameter
Between 0.238 inches and 0.248 inches
Material Thickness
Between 0.057 inches and 0.069 inches
Hardness Rating
Between 38.0 rockwell c and 45.0 rockwell c
Recess Angle
90.0 degrees
Material
Steel comp 4130
Material Specification
Mil-s-6758 military specification single material response
Surface Treatment
Cadmium and chromate
Surface Treatment Specification
Qq-p-416 type 2, cl 2 federal specification single treatment response
Style Designator
15 recessed
NSN
5310-01-342-7264
Part Number
4D0028C3
Description
Washer,recessed
CAGE

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 4D0028C3 NSN 5310-01-342-7264

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:
ESD:
MMAC:
BA
CRITL:
N

Packaging & Shipping

Est. Pack Size
Est. Pack Weight
Est. Item Weight
Est. Item Dim.
Pack Size:
--
Paclk Weight:
--
Item Weight:
--
Item Dim:
--
OPI
SPI No.
SPI Rev.
SPC Mkg.
LVL A
LVL B
OPI:
O
SPI No.:
SPI Rev.:
SPC Mkg:
LVL_A:
E
LVL_B:
B

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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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