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NSN 4820-01-176-8487Government record, cited

Seat, Valve4820-01-176-8487

NSN 4820-01-176-8487 · NIIN 011768487 · Part number 429B757-002

General Electric Company · FSC 4820 — Valves, Nonpowered · FSG 48 — Valves · CAGE 01289

Government record, cited

NSN 4820-01-176-8487 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-176-8487. Manufacturer of record part number: 429B757-002.

Also searched as 4820-01-176-8487 · 4820011768487 · NIIN 011768487 · 01-176-8487 · FSC 4820 Valves, Nonpowered · CAGE 01289 · 429B757-002 · 429B757

Nearby stock numbers ← 4820-01-176-8486 Seat, Valve · 4820-01-176-8495 Parts Kit, Pressure Regulating VA →

4820-01-176-8487 — Valves, Nonpowered

Features

Seat,valve — FSC 4820
Flange Seat to Disk End Height: 1.640 INCHES NOMINAL IN
Flange Diameter: 4.906 INCHES NOMINAL IN
Body Outside Diameter: 4.906 INCHES NOMINAL IN
Style Designator: PLAIN FLANGED
Body Inside Diameter: 3.688 INCHES NOMINAL IN
Under Flange Height: 0.845 INCHES NOMINAL IN
Material: STEEL OVERALL

Identification

NSN: 4820-01-176-8487
NIIN: 011768487
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
Primary part number: 429B757-002
Manufacturer: General Electric Company

General Description

The Seat,valve, cataloged under National Stock Number 4820-01-176-8487, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is General Electric Company. Government technical data includes 8 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.

Technical Specifications

Parameter	Value
NSN	4820-01-176-8487
Primary Part Number	429B757-002
Item Name	Seat,valve
FSC / FSG	4820 / 48 — Valves, Nonpowered
Manufacturer	General Electric Company
Status	ACTIVE
Flange Seat to Disk End Height	1.640 INCHES NOMINAL IN
Flange Diameter	4.906 INCHES NOMINAL IN
Body Outside Diameter	4.906 INCHES NOMINAL IN
Style Designator	PLAIN FLANGED
Body Inside Diameter	3.688 INCHES NOMINAL IN
Under Flange Height	0.845 INCHES NOMINAL IN
Material	STEEL 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
429B757-002 PRIMARY	General Electric Company (USA)

Reference documents

Reference	Meaning
429B757	D/9 Drawing number reference only General Electric Company

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 4820-01-176-8487?

NSN 4820-01-176-8487 is a Seat,valve, manufactured by General Electric Company, classified under FSC 4820, Valves, Nonpowered. Status: active.

What part numbers are listed for NSN 4820-01-176-8487?

NSN 4820-01-176-8487 has 1 manufacturer part number on file: 429B757-002 (General Electric Company).

What are the specifications of 429B757-002?

Key specifications for 429B757-002: Flange Seat to Disk End Height: 1.640 INCHES NOMINAL IN; Flange Diameter: 4.906 INCHES NOMINAL IN; Body Outside Diameter: 4.906 INCHES NOMINAL IN; Style Designator: PLAIN FLANGED. 8 specifications are documented in the U.S. Government catalog.

Is NSN 4820-01-176-8487 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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