Model: 311903-2

Valve Seat

Properties:

Flange Diameter

Between 0.374 inches and 0.375 inches

Body Outside Diameter

Between 0.240 inches and 0.260 inches

Body Inside Diameter

Between 0.100 inches and 0.102 inches

Seat Radius

0.094 inches

Flange Seat To Disk End Height

0.152 mils and 0.155 centimeters

Under Flange Height

Between 0.140 inches and 0.150 inches

Seat Angle In Deg

Between 59.000 and 61.000

Seating Surface Shape

Flat

Material

Steel

Surface Treatment

Passivate

Style Designator

Plain flanged

Nondefinitive Specification/std Data

302 composition

NSN

4810-00-448-5768

Part Number

311903-2

Description

Seat,valve

CAGE

81833

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 311903-2 NSN 4810-00-448-5768

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:

1.0 X 1.0 X 1.0

Paclk Weight:

0.1000lbs

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:

593

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