Model: 16504

Valve Seat

Properties:

Flange Diameter

0.781 inches

Body Outside Diameter

Between 0.557 inches and 0.559 inches

Body Inside Diameter

0.250 inches

Flange Seat To Disk End Height

Between 0.098 inches and 0.102 inches

Under Flange Height

0.410 inches

Hardness Rating

55.0 rockwell c and 60.0 rockwell c

Seating Surface Shape

Flat

Material

Steel comp 440c

Surface Treatment

Passivate

Surface Treatment Specification

Mil-s-5002 military specification single treatment response

Style Designator

Plain flanged

NSN

4820-00-180-5207

Part Number

16504

Description

Seat,valve

CAGE

98656

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 16504 NSN 4820-00-180-5207

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:

172670

UFC:

04195

LTL:

RATING VARIABLE

LCL:

RATING VARIABLE

WCC:

585

TCC:

SHC:

ACC:

Trailers/Vehicles

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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