PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

010-303-0051Seat,valve

Emerson Automation Solutions Final Control Us Lp Div Navy Product Team · NSN 4820-00-306-1338 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-00-306-1338 — this item is cataloged by the U.S. Government under National Stock Number 4820-00-306-1338. Primary manufacturer part number: 010-303-0051.
Features
  • Seat,valve — FSC 4820
  • Surface Treatment: PASSIVATE OVERALL
  • Material: STEEL CORROSION RESISTING OVERALL
  • Thread Quantity Per Inch: 16 SINGLE THREADED PORTION
  • Under Flange Height: 0.500 INCHES NOMINAL IN
  • Thread Length: 0.500 INCHES NOMINAL SINGLE THREADED PORTION IN
  • Style Designator: THREADED FLANGED
  • Thread Class: 2A SINGLE THREADED PORTION A
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Steel Corrosion Resisting Overall construction
General Description

The Seat,valve, cataloged under National Stock Number 4820-00-306-1338, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Emerson Automation Solutions Final Control Us Lp Div Navy Product Team. Government technical data includes 14 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-00-306-1338
Primary Part Number010-303-0051
Item NameSeat,valve
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerEmerson Automation Solutions Final Control Us Lp Div Navy Product Team
StatusACTIVE
Surface TreatmentPASSIVATE OVERALL
MaterialSTEEL CORROSION RESISTING OVERALL
Thread Quantity Per Inch16 SINGLE THREADED PORTION
Under Flange Height0.500 INCHES NOMINAL IN
Thread Length0.500 INCHES NOMINAL SINGLE THREADED PORTION IN
Style DesignatorTHREADED FLANGED
Thread Class2A SINGLE THREADED PORTION A
Nominal Thread Size0.875 INCHES SINGLE THREADED PORTION IN
Body Inside Diameter0.500 INCHES NOMINAL IN
Thread Series DesignatorUN SINGLE THREADED PORTION
Flange Seat to Disk End Height0.375 INCHES NOMINAL IN
Seating Surface ShapeANGULAR
Seat Angle in Deg90.000 NOMINAL
Flange Diameter1.000 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
5133-01-095-4751 INTERCHANGEABLE
Drill,twist
5325-01-134-1392 INTERCHANGEABLE
Insert,screw Thread
Cross-Reference Index
Part NumberManufacturer
41-3-17 Kunkle Industries Inc Lonergan Valve Div (USA)
010-303-0051 Kunkle Industries Inc Lonergan Valve Div (USA)
010-303-0051 Anderson Greenwood Lp Dba Anderson Greenwood Crosby (USA)
010-303-0051 PRIMARY Emerson Automation Solutions Final Control Us Lp Div Navy Product Team (USA)
Related Parts
5133-01-095-4751INTERCHANGEABLE
DRILL,TWIST
5325-01-134-1392INTERCHANGEABLE
INSERT,SCREW THREAD

Frequently Asked Questions

What is NSN 4820-00-306-1338?

NSN 4820-00-306-1338 is a Seat,valve, manufactured by Emerson Automation Solutions Final Control Us Lp Div Navy Product Team, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-00-306-1338?

NSN 4820-00-306-1338 has 4 cross-referenced part numbers: 41-3-17 (Kunkle Industries Inc Lonergan Valve Div), 010-303-0051 (Kunkle Industries Inc Lonergan Valve Div), 010-303-0051 (Anderson Greenwood Lp Dba Anderson Greenwood Crosby), 010-303-0051 (Emerson Automation Solutions Final Control Us Lp Div Navy Product Team).

What NSN replaces 4820-00-306-1338?

There are 2 known substitutes for 4820-00-306-1338: 5133-01-095-4751, 5325-01-134-1392. Verify interchangeability with system specifications before substitution.

What are the specifications of 010-303-0051?

Key specifications for 010-303-0051: Surface Treatment: PASSIVATE OVERALL; Material: STEEL CORROSION RESISTING OVERALL; Thread Quantity Per Inch: 16 SINGLE THREADED PORTION; Under Flange Height: 0.500 INCHES NOMINAL IN. 14 total characteristics are documented in the Federal Logistics Information System.

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