Model: 621-21

Spring Tension Washer

Properties:

Hole Diameter

Between 0.1235 inches and 0.1335 inches

Outside Diameter

Between 0.448 inches and 0.453 inches

Overall Height

Between 0.045 inches and 0.055 inches

Material Thickness

Between 0.0149 inches and 0.0169 inches

Hardness Rating

Between 39.0 rockwell c and 43.0 rockwell c

Material

Copper alloy 170 or copper alloy 172

Material Specification

Qq-c-533 federal specification single material response

NSN

5310-00-272-5663

Part Number

621-21

Description

Washer,spring Tension

CAGE

89944

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

Part 621-21 NSN 5310-00-272-5663

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:

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:

194120

UFC:

95100

LTL:

RATING VARIABLE

LCL:

WCC:

573

TCC:

SHC:

ACC:

Construction Materials

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Schedule B and Export

Schedule B: 7415210000
SITC: 69432
End Use: Finished metal shapes
NAICS: 332722
USDA: 1

Freight Class: Copper washers including spring washers not threaded