Seat, Valve4820-01-596-4821

NSN 4820-01-596-4821 · NIIN 015964821 · Part number S741-3M-SW1-CLOSED

B N L Industries Inc · FSC 4820 — Valves, Nonpowered · FSG 48 — Valves · CAGE 0AZ22

Government record, cited

NSN 4820-01-596-4821 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-596-4821. Manufacturer of record part number: S741-3M-SW1-CLOSED.

Also searched as 4820-01-596-4821 · 4820015964821 · NIIN 015964821 · 01-596-4821 · FSC 4820 Valves, Nonpowered · CAGE 0AZ22 · S741-3M-SW1-CLOSED · 0905049G CD

Nearby stock numbers ← 4820-01-596-4815 Stem, Fluid Valve · 4820-01-596-4822 Valve, Safety Relief →

4820-01-596-4821 — Valves, Nonpowered

Features

Seat,valve — FSC 4820
2 manufacturer part numbers on file
Manufacturer of record: B N L Industries Inc

Identification

NSN: 4820-01-596-4821
NIIN: 015964821
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
Primary part number: S741-3M-SW1-CLOSED
Manufacturer: B N L Industries Inc

General Description

The Seat,valve, cataloged under National Stock Number 4820-01-596-4821, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is B N L Industries Inc. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.

Catalog Facts

Item Name	Seat,valve
FSC / FSG	4820 — Valves, Nonpowered (FSG 48)
Manufacturers	B N L Industries Inc (CAGE 0AZ22)

Technical Specifications

Parameter	Value
NSN	4820-01-596-4821
Primary Part Number	S741-3M-SW1-CLOSED
Item Name	Seat,valve
FSC / FSG	4820 / 48 — Valves, Nonpowered
Manufacturer	B N L Industries Inc
Status	ACTIVE

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
0905049G CD	B N L Industries Inc (USA)
S741-3M-SW1-CLOSED PRIMARY	B N L Industries Inc (USA)

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 4820-01-596-4821?

NSN 4820-01-596-4821 is a Seat,valve, manufactured by B N L Industries Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.

What part numbers are listed for NSN 4820-01-596-4821?

NSN 4820-01-596-4821 has 2 manufacturer part numbers on file: 0905049G CD (B N L Industries Inc), S741-3M-SW1-CLOSED (B N L Industries Inc).

Is NSN 4820-01-596-4821 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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