PartsTable TECHNICAL DATA SHEET

NSN 4820-01-281-1629Government record, cited

Seat, Valve4820-01-281-1629

NSN 4820-01-281-1629 · NIIN 012811629 · Part number 51729D005

Dover Resources, Inc. Div Norriseal · FSC 4820 — Valves, Nonpowered · FSG 48 — Valves · CAGE 1NB39

Government record, cited

NSN 4820-01-281-1629 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-281-1629. Manufacturer of record part number: 51729D005.

Also searched as 4820-01-281-1629 · 4820012811629 · NIIN 012811629 · 01-281-1629 · FSC 4820 Valves, Nonpowered · CAGE 1NB39 · 51729D005

Nearby stock numbers ← 4820-01-281-1628 Seat, Valve · 4820-01-281-1630 Seat, Valve →

4820-01-281-1629 — Valves, Nonpowered

Features

Seat,valve — FSC 4820
Style Designator: PLAIN
Material Document and Classification: QQ-N-288 A OR E FED SPEC SINGLE MATERIAL RESPONSE SEAT A
Body Inside Diameter: 5.000 INCHES NOMINAL IN
Material: NICKEL ALLOY SEAT
Seating Surface Shape: FLAT
1 manufacturer part number on file
Manufacturer of record: Dover Resources, Inc. Div Norriseal

Identification

NSN: 4820-01-281-1629
NIIN: 012811629
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
Primary part number: 51729D005
Manufacturer: Dover Resources, Inc. Div Norriseal

General Description

The Seat,valve, cataloged under National Stock Number 4820-01-281-1629, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Dover Resources, Inc. Div Norriseal. Government technical data includes 5 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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	4820-01-281-1629
Primary Part Number	51729D005
Item Name	Seat,valve
FSC / FSG	4820 / 48 — Valves, Nonpowered
Manufacturer	Dover Resources, Inc. Div Norriseal
Status	ACTIVE
Style Designator	PLAIN
Material Document and Classification	QQ-N-288 A OR E FED SPEC SINGLE MATERIAL RESPONSE SEAT A
Body Inside Diameter	5.000 INCHES NOMINAL IN
Material	NICKEL ALLOY SEAT
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
51729D005 PRIMARY	Dover Resources, Inc. Div Norriseal (USA)

Reference documents

Reference	Meaning
51729D005	5/9 Secondary 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 4820-01-281-1629?

NSN 4820-01-281-1629 is a Seat,valve, manufactured by Dover Resources, Inc. Div Norriseal, classified under FSC 4820, Valves, Nonpowered. Status: active.

What part numbers are listed for NSN 4820-01-281-1629?

NSN 4820-01-281-1629 has 1 manufacturer part number on file: 51729D005 (Dover Resources, Inc. Div Norriseal).

What are the specifications of 51729D005?

Key specifications for 51729D005: Style Designator: PLAIN; Material Document and Classification: QQ-N-288 A OR E FED SPEC SINGLE MATERIAL RESPONSE SEAT A; Body Inside Diameter: 5.000 INCHES NOMINAL IN; Special Features: VALVE SIZE 5IN. IN. 5 specifications are documented in the U.S. Government catalog.

Is NSN 4820-01-281-1629 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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