Model: 3502-20-28

Spring Tension Washer

Properties:

Hole Diameter

Between 0.376 inches and 0.382 inches

Outside Diameter

Between 0.558 inches and 0.568 inches

Overall Height

Between 0.068 inches and 0.088 inches

Material Thickness

Between 0.009 inches and 0.011 inches

Hardness Rating

Between 40.0 rockwell c and 50.0 rockwell c

Material

Steel comp 1050

Material Specification

Sae assn standard single material response

Surface Treatment

Cadmium and chromate

Surface Treatment Specification

Qq-p-416, type 2, cl 2 federal specification single treatment response

NSN

5310-00-557-8748

Part Number

3502-20-28

Description

Washer,spring Tension

CAGE

78189

A bent spring metal washer with a centrally located hole. It is designed to exert pressure axially when assembled in place.

Part 3502-20-28 NSN 5310-00-557-8748

INC

FIIG

Concept No.

App. Key

Cond. Code

Status

INC:

15938

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:

0.1000lbs

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: 7318210000
SITC: 69422
End Use: Finished metal shapes
NAICS: 332722
USDA: 1

Freight Class: Spring washers and other lock washers, iron or steel