Model: 310395

Recessed Washer

Special Features:

Outside periphery of counterbore chamfered to depth of 0.020 in. Min, 0.030 in. Max at 8 to 12 deg

Properties:

Hole Diameter

Between 0.465 inches and 0.470 inches

Outside Diameter

Between 0.830 inches and 0.831 inches

Overall Height

Between 0.130 inches and 0.140 inches

Recess Depth

Between 0.060 inches and 0.065 inches

Material Thickness

Between 0.070 inches and 0.076 inches

Hardness Rating

Between 81.2 rockwell a and 85.0 rockwell a

Surface Finish

63.0 microinches all surfaces

Material

Steel comp e52100

Material Specification

66 federal standard single material response or astm a322 assn standard single material response or astm a331 assn standard single material response

Style Designator

Recessed

NSN

5310-00-143-6144

Part Number

310395

Description

Washer,recessed

CAGE

58163

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 310395 NSN 5310-00-143-6144

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:

Freight Classification

NMFC

UFC

LTL

LCL

WCC

TCC

SHC

ACC

NMFC:

194160

UFC:

55210

LTL:

50.0

LCL:

WCC:

713

TCC:

SHC:

ACC:

Construction Materials

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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