Model: 20274FN5

Valve Seat

Special Features:

End from seating surface broached to 0.562 in. Hex by 0.250 in deep for seat removal

Properties:

Thread Class

2a single threaded portion

Thread Length

1.000 inches single threaded portion

Overall Height

1.250 inches

Body Inside Diameter

0.750 inches

Seat Angle In Deg

Between 45.000 and 60.000

Thready Qty Per Inch (tpi)

18 single threaded portion

Thread Size

1.125 inches single threaded portion

Seating Surface Shape

Angular

Criticality Code Justification

Zzzy

Material

Nickel alloy

Material Specification

Qq-n-281 federal specification single material response

Style Designator

B5 plain threaded

Thread Series Designator

Unef single threaded portion

Reference Number Differentiating Characteristics

Material will be in accordance with ships parts control center activity hx quality control, manufacturing and testing specifications

NSN

4820-01-168-5684

Part Number

20274FN5

Description

Seat,valve

CAGE

01343

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 20274FN5 NSN 4820-01-168-5684

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:

2.5 X 2.0 X 2.0

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:

100.0

WCC:

594

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