Model: 309688

Shouldered And Recessed Washer

Properties:

Hole Diameter

Between 0.158 inches and 0.163 inches

Shoulder Diameter

Between 0.312 inches and 0.313 inches

Outside Diameter

Between 0.490 inches and 0.510 inches

Shoulder Height

Between 0.0555 inches and 0.0575 inches

Material Thickness

Between 0.0545 inches and 0.0625 inches

Hardness Rating

Between 25.0 rockwell c and 33.0 rockwell c

Recess Angle

Between 99.0 degrees and 101.0 degrees

Material

Steel comp 410

Material Specification

Ams 5613 assn standard single material response or ams 5504 assn standard single material response

Style Designator

Shouldered and recessed

NSN

5310-00-550-3593

Part Number

309688

Description

Washer,shouldered And Recessed

CAGE

11449

A washer, round in shape, having a centrally located hole. One bearing surface is flat, the other surface is in the form of a raised shoulder (boss) having a flat bearing surface. Either or both of the bearing surfaces must be broken by a counterbore, countersink, or similar shaped recess. The thickness of the shoulder (boss) must not exceed 25 percent of the shoulder (boss) diameter. For items having a shoulder (boss) of greater thickness, use bearing, sleeve; bushing, sleeve; or spacer, sleeve. Excludes insulator, washer and thrust type washers.

Part 309688 NSN 5310-00-550-3593

INC

FIIG

Concept No.

App. Key

Cond. Code

Status

INC:

15935

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: 7616108000
SITC: 69440
End Use: Finished metal shapes
NAICS: 332722
USDA: 1

Freight Class: Cotters, cotter-pins, washers and similar articles, of aluminum