Model: 052990-004

Valve Seat

Special Features:

5.0 degrees clearance ontop to maintain 0.125 in. Seat w

Properties:

Thread Class

2a single threaded portion

Thread Length

1.250 inches single threaded portion

Overall Height

1.500 inches

Body Inside Diameter

27.000 inches

Thready Qty Per Inch (tpi)

8 single threaded portion

Thread Size

28.500 inches single threaded portion

Seating Surface Shape

Flat

Material

Copper

Style Designator

B5 plain threaded

Style Designator

Plain threaded

Thread Series Designator

Uns single threaded portion

NSN

4820-00-036-0455

Part Number

052990-004

Description

Seat,valve

CAGE

11672

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 052990-004 NSN 4820-00-036-0455

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:

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:

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