Valve Seat

NSN: 4820-00-885-4929 | Model: 661203

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.

NSN Properties and Flags

NATO Stock Number

4820-00-885-4929

DEMIL

Flange Diameter

Between 0.490 inches and 0.510 inches

Body Outside Diameter

Between 0.370 inches and 0.373 inches

Body Inside Diameter

Between 0.160 inches and 0.170 inches

Flange Seat To Disk End Height

Between 0.047 inches and 0.050 inches

Under Flange Height

Between 1.030 inches and 1.050 inches

Seal Accommodation Type

Grooved

Hardness Rating

40.0 rockwell c and 47.0 rockwell c

Seating Surface Shape

Flat

Special Features

8 bleed holes

Material

Steel

Fsc Application Data

Air turbine motor, aircraft constant speed drive

Pricing and Availability

Send us a request for quote using the form below. Our team will contact you with an up to date pricing and availability quote ASAP.

Certified Quality Assurance

ISO 9001:2015 + AS9120B
Counterfeit Parts Prevention
100% Product Inspections
7 Year Record Retention
On Time Delivery
HAZMAT Certified
Worldwide Shipping

NSN 4820-00-885-4929 Datasheet

Supply Class (FSC):

Nonpowered Valves

Cross Reference:

661203
661203
661203
661203

Cage Codes:

Honeywell International Inc. (CAGE 59364)
Alliedsignal Inc (CAGE 72599)
Honeywell International Inc. (CAGE 99193)
Honeywell International Inc. (CAGE 70210)

Schedule B & Trade:

Schedule B: 8481909090 (NAICS 332911)

Parts of taps, cocks, valves and similar appliances, nesoi
SITC: 74790

Parts for taps, cocks, valves and similar appliances for pipes, boiler shells, tanks, etc.
End Use: 21180

Industrial machines, other

Identification:

HMIC

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

PMIC

U - Precious metal content is unknown

ADPE

- Represents items with no adp components

CRITL

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

Questions & Answers:
What are the historical prices recorded for this stock number?
No pre-dated pricing for this NSN could be found.
Does NSN 4820-00-885-4929 have a shelf life?
No. There is no shelf life applicable for this NSN.
What NATO entities are users of this NSN?
No recorded entities for this stock number.
What is the NIIN of NSN 4820-00-885-4929?
008854929 or 00-885-4929
Does NSN 4820-00-885-4929 require demilitarization?
Yes - ITAR Controlled
What is the most recent solicitation for NSN 4820-00-885-4929?
No solicitations for this NSN.
When was this national stock number assigned to the federal catalog?
Jan 01, 1962