Model: 4D0028C6

Recessed Washer

Properties:

Hole Diameter

Between 0.370 inches and 0.380 inches

Outside Diameter

Between 0.691 inches and 0.701 inches

Recess Diameter

Between 0.465 inches and 0.475 inches

Material Thickness

Between 0.071 inches and 0.085 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 or mil-s-18729 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

5310-01-417-1032

Part Number

4D0028C6

Description

Washer,recessed

CAGE

10630

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 4D0028C6 NSN 5310-01-417-1032

INC

FIIG

Concept No.

App. Key

Cond. Code

Status

INC:

15933

FIIG:

A022B0

Concept No.:

App. Key:

Cond. Code:

Status:

Material Classification

Hazardous material, precious metals, criticality, enviroment, and electrostatic discharge indicators

HMIC

PMIC

ESD/EMI

ENAC

MMAC

CRITL

HMIC:

PMIC:

ESD:

MMAC:

CRITL:

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:

SPI No.:

SPI Rev.:

SPC Mkg:

LVL_A:

LVL_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