NSN 4820-01-253-4637

Valve Seat

DEMIL

Shelf Life

UOM

NIIN

Demil:

Shelf Life:

N/A

UOM:

1 EA

NIIN:

012534637

Pricing & Availability Check

Submit this form for stock availability and pricing.

Product Definition Definition of approved item name (AIN): "SEAT,VALVE"

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.

4820-01-253-4637 Spec. NSN part characteristics

MRC

Name

Detail

MRC:

AAJD

Thread Class

3a single threaded portion

MRC:

AASA

Thread Length

0.344 inches single threaded portion

MRC:

ABKK

Flange Diameter

0.672 inches

MRC:

AJRF

Flange Seat To Disk End Height

0.094 inches

MRC:

AJRM

Under Flange Height

0.594 inches

MRC:

CQFM

Hardness Rating

40.0 rockwell c and 45.0 rockwell c

MRC:

CQJX

Thread Size

0.500 inches single threaded portion

MRC:

CQKM

Seating Surface Shape

Flat

MRC:

CQKW

Body Stepped Inside Diameter

0.316 inches second step

MRC:

FEAT

Special Features

0.375 in. Across flats, 0.156 in. Lg hex wrenching feature flange end; four 0.062 in. Diameter holes 90 degrees apart drilled through body perpendicular to bore between thd portion and flange

MRC:

MATT

Material

Steel comp 4140

MRC:

STYL

Style Designator

Threaded flanged

MRC:

THSD

Thread Series Designator

Unf single threaded portion

Cross Reference Parts Part numbers that meet the specification outlined on this page and set by the OEM

Part Number

Cage

RNCC

RNVC

DAC

RNAAC

Status

MSDS

SADC

Part Number:

35-16231Z

Cage Code:

9F512

RNCC:

RNVC:

DAC:

RNAAC:

Status:

MSDS:

SADC:

Part Number:

035-16231

Cage Code:

9F512

RNCC:

RNVC:

DAC:

RNAAC:

Status:

MSDS:

SADC:

Part Number:

35-16231

Cage Code:

9F512

RNCC:

RNVC:

DAC:

RNAAC:

Status:

MSDS:

SADC:

Part Number:

25-8153-W

Cage Code:

9F512

RNCC:

RNVC:

DAC:

RNAAC:

Status:

MSDS:

SADC:

Indicates a design/source control reference item

Inidicates part number has been superseded

Identification Item Identification Guide (IIG) and Item Name Code (INC)

INC

FIIG

Concept No.

App. Key

Cond. Code

Status

INC:

22113

FIIG:

A15500

Concept No.:

App. Key:

Cond. Code:

Status:

Special material and handling

HMIC

PMIC

ESD

ENAC

ADPE

CRITL

HMIC:

PMIC:

ESD:

ADPE:

CRITL:

Hazmat (HMIC) N

Indicates there is no data in the hmirs and the nsn is in a fsc not generally suspected of containing hazardous materials.

Precious Metals (PMIC) A

Item does not contain precious metal.

Criticality X

The item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application.

Import and Export

Schedule B

NAIC

End Use

SITC

USDA

HITECH

Schedule B:

8481909090

NAICS:

332911

End Use Class:

21180

SITC:

74790

USDA:

HITECH:

Schedule B Codes Definitions:

Schedule B 8481909090

Parts Of Taps, Cocks, Valves and Similar Appliances, Nesoi

End Use Code 21180

Industrial Machines, Other

Standard Intl. Trade Class (SITC) 74790

Parts For Taps, Cocks, Valves and Similar Appliances For Pipes, Boiler Shells, Tanks, Etc.

National motor freight and handling

NMFC

Class

UFC

LTL

LCL

WCC

TCC

SHC

ADC

ACC

NMFC:

051080

NMF Description:

Gates Valves Bibcocks Faucets

UFC:

29300

LTL:

Rating variable

LCL:

WCC:

594

TCC:

SHC:

ADC:

ACC:

Freight Codes Definitions:

Cargo Type (TCC) Z

No special type of cargo code applicable.

Water Commodity (WCC) 594

Pumps and parts, (machinery and parts),(less than 35 feet).

Air Commodity (ACC) V

Trailers, vehicles, machinery, shop and warehouse equipment and supplies including special tools and equipment, ground servicing.

Air Dimensions (ADC) A

Shipment is not a consolidation and does not exceed 84 inches in any dimension.

Air Special Handling (SHC) 9

Other or no special handling required (sh)