Model: 2643-1002-63

Valve Seat

Special Features:

A/k/a seat upper

Properties:

Thread Class

3a single threaded portion

Thread Length

0.650 inches single threaded portion

Flange Diameter

5.750 inches

Body Outside Diameter

5.360 inches

Body Inside Diameter

4.625 inches

End Application

Seawolf class ssn

Flange Seat To Disk End Height

0.600 inches

Under Flange Height

0.775 inches

Thready Qty Per Inch (tpi)

12 single threaded portion

Hardness Rating

115.0 rockwell r seat

Thread Size

5.500 inches single threaded portion

Seating Surface Shape

Flat

Material

Plastic polytetrafluoroethylene seat

Style Designator

Plain flanged

Thread Series Designator

Un single threaded portion

NSN

4820-01-442-0424

Part Number

2643-1002-63

Description

Seat,valve

CAGE

96169

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 2643-1002-63 NSN 4820-01-442-0424

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:

051080

UFC:

29300

LTL:

RATING VARIABLE

LCL:

WCC:

594

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