PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

11221Seat,valve

Mission Systems Orchard Park Inc · NSN 4810-00-633-3804 · FSC 4810 · No Item Name Available
Verified by PartsTable
NSN 4810-00-633-3804 — this item is cataloged by the U.S. Government under National Stock Number 4810-00-633-3804. Primary manufacturer part number: 11221.
Features
  • Seat,valve — FSC 4810
  • Surface Treatment: NICKEL OVERALL
  • Nominal Thread Size: 0.562 INCHES SINGLE THREADED PORTION IN
  • Flange Diameter: 0.275 INCHES MINIMUM AND 0.278 INCHES MAXIMUM IN
  • Material: COPPER ALLOY OVERALL
  • Thread Length: 0.125 INCHES NOMINAL SINGLE THREADED PORTION IN
  • Flange Seat to Disk End Height: 0.049 INCHES MINIMUM AND 0.057 INCHES MAXIMUM IN
  • Thread Series Designator: UNF SINGLE THREADED PORTION
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Copper Alloy Overall construction
General Description

The Seat,valve, cataloged under National Stock Number 4810-00-633-3804, is classified within Federal Supply Class 4810 (No Item Name Available) of the Valves group. The primary manufacturer of record is Mission Systems Orchard Park Inc. Government technical data includes 14 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN4810-00-633-3804
Primary Part Number11221
Item NameSeat,valve
FSC / FSG4810 / 48 — No Item Name Available
ManufacturerMission Systems Orchard Park Inc
StatusCANCELLED
Surface TreatmentNICKEL OVERALL
Nominal Thread Size0.562 INCHES SINGLE THREADED PORTION IN
Flange Diameter0.275 INCHES MINIMUM AND 0.278 INCHES MAXIMUM IN
MaterialCOPPER ALLOY OVERALL
Thread Length0.125 INCHES NOMINAL SINGLE THREADED PORTION IN
Flange Seat to Disk End Height0.049 INCHES MINIMUM AND 0.057 INCHES MAXIMUM IN
Thread Series DesignatorUNF SINGLE THREADED PORTION
Under Flange Height0.211 INCHES NOMINAL IN
Body Inside Diameter0.060 INCHES NOMINAL IN
Thread Class2A SINGLE THREADED PORTION A
Seating Surface ShapeFLAT
Style DesignatorFAUCET
Material Document and ClassificationQQ-B-626,ALLOY 72 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
Surface Treatment Document and ClassificationQQ-N-290 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
2920-00-133-3291112-21 INTERCHANGEABLE
Rotor,generator
Prestolite Electric Inc
5136-00-228-099554661 INTERCHANGEABLE
Tap,thread Cutting
Tapco Cutting Tools Inc
5360-00-256-96431-1221 INTERCHANGEABLE
Spring,helical,compression
Terex Usa, Llc Dba Terex Equipment Services
6350-00-554-8774223585 INTERCHANGEABLE
Horn,signal
Bendix Commercial Vehicle Systems Llc Dba Bendix Commercial Vehicle Systems
6130-00-702-6815 INTERCHANGEABLE
Rectifier,metallic
5330-00-768-85575782 INTERCHANGEABLE
Seal,plain Encased
Federal-Mogul Corp Government Sales Dept
3010-01-094-3193AE-404 INTERCHANGEABLE
Gear Assembly,speed Decreaser
L3harris Maritime Services Inc
5963-01-209-575711221 INTERCHANGEABLE
Electronic Module,standardized
Nautel C-Tech Limited
4320-01-278-8683C227 INTERCHANGEABLE
Ring,wearing
Circor Naval Solutions Llc Dba Warren Pumps
4730-01-312-59251122-1 INTERCHANGEABLE
Nut,union
R & D Machine Rafael Anaya Div Defense Logistics Agency
Cross-Reference Index
Part NumberManufacturer
11221 PRIMARY Mission Systems Orchard Park Inc (USA)
A11221 Ingersoll-Rand Company Dba Ingersoll-Rand (USA)
11221 Ingersoll-Rand Company Dba Ingersoll-Rand (USA)
Related Parts
2920-00-133-3291INTERCHANGEABLE
ROTOR,GENERATOR
112-21
5136-00-228-0995INTERCHANGEABLE
TAP,THREAD CUTTING
54661
5360-00-256-9643INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
1-1221
6350-00-554-8774INTERCHANGEABLE
HORN,SIGNAL
223585
6130-00-702-6815INTERCHANGEABLE
RECTIFIER,METALLIC
5330-00-768-8557INTERCHANGEABLE
SEAL,PLAIN ENCASED
5782
3010-01-094-3193INTERCHANGEABLE
GEAR ASSEMBLY,SPEED DECREASER
AE-404
5963-01-209-5757INTERCHANGEABLE
ELECTRONIC MODULE,STANDARDIZED
11221
4320-01-278-8683INTERCHANGEABLE
RING,WEARING
C227
4730-01-312-5925INTERCHANGEABLE
NUT,UNION
1122-1
4730-01-337-3721INTERCHANGEABLE
NIPPLE,PIPE
6850-01-394-0162INTERCHANGEABLE
CLEANING COMPOUND,SOLVENT
1122-1

Frequently Asked Questions

What is NSN 4810-00-633-3804?

NSN 4810-00-633-3804 is a Seat,valve, manufactured by Mission Systems Orchard Park Inc, classified under FSC 4810 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 4810-00-633-3804?

NSN 4810-00-633-3804 has 3 cross-referenced part numbers: 11221 (Mission Systems Orchard Park Inc), A11221 (Ingersoll-Rand Company Dba Ingersoll-Rand), 11221 (Ingersoll-Rand Company Dba Ingersoll-Rand).

What NSN replaces 4810-00-633-3804?

There are 12 known substitutes for 4810-00-633-3804: 2920-00-133-3291, 5136-00-228-0995, 5360-00-256-9643 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 11221?

Key specifications for 11221: Surface Treatment: NICKEL OVERALL; Nominal Thread Size: 0.562 INCHES SINGLE THREADED PORTION IN; Flange Diameter: 0.275 INCHES MINIMUM AND 0.278 INCHES MAXIMUM IN; Material: COPPER ALLOY OVERALL. 14 total characteristics are documented in the Federal Logistics Information System.

Is NSN 4810-00-633-3804 still in active supply?

NSN 4810-00-633-3804 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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