Model: 439B877-004

Valve Seat

Properties:

Flange Diameter

4.751 inches

Body Outside Diameter

3.938 inches

Body Inside Diameter

3.236 inches

Flange Seat To Disk End Height

1.260 inches

Under Flange Height

1.685 inches

Seat Angle In Deg

50.000

Seating Surface Shape

Angular

Material

Steel

NSN

4820-00-842-0511

Part Number

439B877-004

Description

Seat,valve

CAGE

01289

A replaceable item designed to provide a stationary seating surface for a mating, moveable item such as a valve disk or the like. The body may have a flange of various shapes. For diesel and gasoline reciprocating engines, see insert, engine valve seat.

Part 439B877-004 NSN 4820-00-842-0511

INC

FIIG

Concept No.

App. Key

Cond. Code

Status

INC:

22113

FIIG:

A15500

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:

051080

UFC:

29300

LTL:

RATING VARIABLE

LCL:

WCC:

576

TCC:

SHC:

ACC:

Construction Materials

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Schedule B and Export

Schedule B: 8481909090
SITC: 74790
End Use: Industrial machines, other
NAICS: 332911
USDA: 1

Freight Class: Parts of taps, cocks, valves and similar appliances, nesoi