PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

265840 ITEM 5 REVRetainer,seat,valve

Oil Capital Valve Company Dba Ocv Control Valves Div Ocv Control Valves, Llc · NSN 4820-01-598-5499 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-598-5499 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-598-5499. Primary manufacturer part number: 265840 ITEM 5 REV.
Features
  • Retainer,seat,valve — FSC 4820
  • 2 verified cross-references
  • Primary manufacturer: Oil Capital Valve Company Dba Ocv Control Valves Div Ocv Control Valves, Llc
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
General Description

The Retainer,seat,valve, cataloged under National Stock Number 4820-01-598-5499, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Oil Capital Valve Company Dba Ocv Control Valves Div Ocv Control Valves, Llc. This item has 2 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NameRetainer,seat,valve
FSC / FSG4820 — No Item Name Available (FSG 48)
ManufacturersOil Capital Valve Company Dba Ocv Control Valves Div Ocv Control Valves, Llc (CAGE 00515)
Technical Specifications
ParameterValue
NSN4820-01-598-5499
Primary Part Number265840 ITEM 5 REV
Item NameRetainer,seat,valve
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerOil Capital Valve Company Dba Ocv Control Valves Div Ocv Control Valves, Llc
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
6685-00-951-4539155359 INTERCHANGEABLE
Gage,pressure,dial Indicating
Ametek, Inc. Div Aerospace & Defense
6680-01-612-7416309000 INTERCHANGEABLE
Indicator,sight,liquid
Stinar, Llc
2040-01-685-1415309000 INTERCHANGEABLE
Hatch,marine
Hamilton Jet, Inc.
Cross-Reference Index
Part NumberManufacturer
265840 ITEM 5 REV Oil Capital Valve Company Dba Ocv Control Valves Div Ocv Control Valves, Llc (USA)
309000 Oil Capital Valve Company Dba Ocv Control Valves Div Ocv Control Valves, Llc (USA)
Related Parts
6685-00-951-4539INTERCHANGEABLE
GAGE,PRESSURE,DIAL INDICATING
155359
6680-01-612-7416INTERCHANGEABLE
INDICATOR,SIGHT,LIQUID
309000
2040-01-685-1415INTERCHANGEABLE
HATCH,MARINE
309000

Frequently Asked Questions

What is NSN 4820-01-598-5499?

NSN 4820-01-598-5499 is a Retainer,seat,valve, manufactured by Oil Capital Valve Company Dba Ocv Control Valves Div Ocv Control Valves, Llc, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-01-598-5499?

NSN 4820-01-598-5499 has 2 cross-referenced part numbers: 265840 ITEM 5 REV (Oil Capital Valve Company Dba Ocv Control Valves Div Ocv Control Valves, Llc), 309000 (Oil Capital Valve Company Dba Ocv Control Valves Div Ocv Control Valves, Llc).

What NSN replaces 4820-01-598-5499?

There are 3 known substitutes for 4820-01-598-5499: 6685-00-951-4539, 6680-01-612-7416, 2040-01-685-1415. Verify interchangeability with system specifications before substitution.

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