Model: 657120

Valve Seat

Special Features:

0.0125 in. Lg by 2.600 in. Od taper both ends

Properties:

Overall Height

0.100 inches

Body Outside Diameter

2.822 inches

Body Inside Diameter

2.451 inches

End Application

4810-00-825-5218

Hardness Rating

37.0 rockwell c and 44.0 rockwell c

Seating Surface Shape

Flat

Material

Steel comp 431

Material Specification

Mil-s-18732, cond a military specification single material response

Surface Treatment

Passivate

Surface Treatment Specification

Mil-s-5002 military specification single treatment response

Style Designator

Plain

NSN

4810-00-737-3299

Part Number

657120

Description

Seat,valve

CAGE

98889

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 657120 NSN 4810-00-737-3299

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:

Packaging & Shipping

Est. Pack Size

Est. Pack Weight

Est. Item Weight

Est. Item Dim.

Pack Size:

Paclk Weight:

0.5000lbs

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:

133300

UFC:

63220

LTL:

RATING VARIABLE

LCL:

WCC:

593

TCC:

SHC:

ACC:

Equipment for Aircraft

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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