PartsTable TECHNICAL DATA SHEET

NSN 4820-01-269-4753Government record, cited

Seat, Valve4820-01-269-4753

NSN 4820-01-269-4753 · NIIN 012694753 · Part number 5893894

O T S I · FSC 4820 — Valves, Nonpowered · FSG 48 — Valves · CAGE 05825

Government record, cited

NSN 4820-01-269-4753 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-269-4753. Manufacturer of record part number: 5893894.

Also searched as 4820-01-269-4753 · 4820012694753 · NIIN 012694753 · 01-269-4753 · FSC 4820 Valves, Nonpowered · CAGE 05825 · 5893894

Nearby stock numbers ← 4820-01-269-4751 Seat, Valve · 4820-01-269-4754 →

4820-01-269-4753 — Valves, Nonpowered

Features

Seat,valve — FSC 4820
Flange Seat to Disk End Height: 0.365 INCHES NOMINAL IN
Flange Diameter: 2.400 INCHES NOMINAL IN
Style Designator: THREADED FLANGED
Body Inside Diameter: 1.186 INCHES NOMINAL IN
Under Flange Height: 0.600 INCHES NOMINAL IN
Material: STEEL COMP 304 OVERALL
Seating Surface Shape: FLAT

Identification

NSN: 4820-01-269-4753
NIIN: 012694753
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
Primary part number: 5893894
Manufacturer: O T S I

General Description

The Seat,valve, cataloged under National Stock Number 4820-01-269-4753, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is O T S I. Government technical data includes 7 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.

Technical Specifications

Parameter	Value
NSN	4820-01-269-4753
Primary Part Number	5893894
Item Name	Seat,valve
FSC / FSG	4820 / 48 — Valves, Nonpowered
Manufacturer	O T S I
Status	ACTIVE
Flange Seat to Disk End Height	0.365 INCHES NOMINAL IN
Flange Diameter	2.400 INCHES NOMINAL IN
Style Designator	THREADED FLANGED
Body Inside Diameter	1.186 INCHES NOMINAL IN
Under Flange Height	0.600 INCHES NOMINAL IN
Material	STEEL COMP 304 OVERALL
Seating Surface Shape	FLAT

Lifecycle & Compliance

Acquisition Status	ACTIVE
DEMIL Code	DEMIL A — No Demilitarization Required
Hazard	No hazard code in the DLA record (HMIC N)
Criticality Code	X

Cross-Reference Index

Part Number	Manufacturer
5893894	O T S I (USA)

Reference documents

Reference	Meaning
5893894	3/1 Design control — primary reference Naval Sea Systems Command
5893894	3/2 Design control — primary reference U.S. Government activity

No interchangeability data on file.

Other items in FSC 4820 — Valves, Nonpowered

Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.

4820-00-000-0097

4820-00-000-0097 · Item name not on file

4820-00-001-0010

VALVE,ROTARY,SELECTOR

4820-00-001-0020

4820-00-001-0020 · Item name not on file

4820-00-001-0021

4820-00-001-0021 · Item name not on file

4820-00-001-0032

4820-00-001-0032 · Item name not on file

4820-00-001-0037

VALVE,SAFETY RELIEF

4820-00-001-0042

4820-00-001-0042 · Item name not on file

4820-00-001-1230

4820-00-001-1230 · Item name not on file

Frequently Asked Questions

What is NSN 4820-01-269-4753?

NSN 4820-01-269-4753 is a Seat,valve, manufactured by O T S I, classified under FSC 4820, Valves, Nonpowered. Status: active.

What part numbers are listed for NSN 4820-01-269-4753?

NSN 4820-01-269-4753 has 1 manufacturer part number on file: 5893894 (O T S I).

What are the specifications of 5893894?

Key specifications for 5893894: Flange Seat to Disk End Height: 0.365 INCHES NOMINAL IN; Flange Diameter: 2.400 INCHES NOMINAL IN; Style Designator: THREADED FLANGED; Body Inside Diameter: 1.186 INCHES NOMINAL IN. 7 specifications are documented in the U.S. Government catalog.

Is NSN 4820-01-269-4753 hazardous material?

No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.

Sources

U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.

U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.

✓ Data cited from the U.S. Government catalog; commercial cross-references from OEM and certified industry sources.

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