Model: 20021A

Helical Compression Spring Seat

Properties:

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

Part Number

20021A

Description

Seat,helical Compression Spring

CAGE

1ML14

Part 20021A NSN 5340-00-358-3417

INC

FIIG

Concept No.

App. Key

Cond. Code

Status

INC:

24328

FIIG:

T319-E

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:

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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