20021A

Helical Compression Spring Seat

NSN 5340-00-358-3417

DEMIL

Shelf Life

UOM

NIIN

Demil:

Shelf Life:

N/A

UOM:

5 EA

NIIN:

003583417

Technical Specifications of NSN

Countersink Angle In Deg:

30.0

Counterbore Diameter:

Between 0.5130 inches and 0.5180 inches

Overall Height:

0.3860 inches

First Step Diameter:

Between 1.1550 inches and 1.1650 inches

Bore Diameter:

0.3910 inches

Design Type:

Solid

Countersink Diameter:

Between 0.9330 inches and 0.9380 inches

End Diameter:

Between 0.8960 inches and 0.9060 inches

Distance From End To First Step:

0.2920 inches

Counterbore Length:

0.2820 inches

Features Provided:

Casehardened

Material:

Steel, aisi b1113 or steel sae 1113

Material:

Steel, aisi b1113 or steel sae 1113

Fsc Application Data:

Engine, gasoline, nonaircraft

NSN:

5340-00-358-3417

Item Name:

Valve,spring Retainer

Cage Code:

28265

Other Related Parts

Part Number

Cage

RNCC

RNVC

RNAAC

Status

MSDS

SADC

Part Number:

20021A

Cage Code:

1ML14

RNCC:

RNVC:

RNAAC:

Status:

MSDS:

SADC:

Part Number:

R683

Cage Code:

81118

RNCC:

RNVC:

RNAAC:

Status:

MSDS:

SADC:

Part Identification

INC

FIIG

Concept No.

App. Key

Cond. Code

Status

INC:

24328

FIIG:

T319-E

Concept No.:

App. Key:

Cond. Code:

Status:

Part Materials

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

HMIC

PMIC

ESD/EMI

ENAC

MMAC

CRITL

HMIC:

PMIC:

ESD:

MMAC:

CRITL:

Freight Classification

NMFC

UFC

LTL

LCL

WCC

TCC

SHC

ACC

NMFC:

095190

UFC:

49790

LTL:

RATING VARIABLE

LCL:

WCC:

713

TCC:

SHC:

ACC:

Construction Materials

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Pricing & Availability

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Definition Definition of approved item name (AIN): "Spring Retainer Valve"

A circular item, usually having a flat or grooved flange, boss(es), and/or counterbore designed to accommodate the end of the spring. It is used to position the spring, but does not encase the spring or restrain lateral motion. It may be used in conjunction with a retainer, helical compression spring. Excludes washer (1), (as modified); seat, ball socket and holder, spring. See also rotor, engine poppet valve.