Seat, Check Valve1680-01-538-9442

NSN 1680-01-538-9442 · NIIN 015389442 · Part number 4112-002-01

Mission Systems Orchard Park Inc · FSC 1680 — Miscellaneous Aircraft Accessories and Components · FSG 16 — Aircraft Components and Accessories · CAGE 04577

Government record, cited

NSN 1680-01-538-9442 — this item is cataloged by the U.S. Government under National Stock Number 1680-01-538-9442. Manufacturer of record part number: 4112-002-01.

Also searched as 1680-01-538-9442 · 1680015389442 · NIIN 015389442 · 01-538-9442 · FSC 1680 Miscellaneous Aircraft Accessories and Components · CAGE 04577 · 4112-002-01

Nearby stock numbers ← 1680-01-538-9440 Body, Regulator · 1680-01-538-9541 Harness, Aircraft Safety, Shoulder →

Features

Seat,check Valve — FSC 1680
1 manufacturer part number on file
Manufacturer of record: Mission Systems Orchard Park Inc

Identification

NSN: 1680-01-538-9442
NIIN: 015389442
FSC: 1680 — Miscellaneous Aircraft Accessories and Components
FSG: 16 — Aircraft Components and Accessories
Primary part number: 4112-002-01
Manufacturer: Mission Systems Orchard Park Inc

General Description

The Seat,check Valve, cataloged under National Stock Number 1680-01-538-9442, is classified within Federal Supply Class 1680 (Miscellaneous Aircraft Accessories and Components) of the Aircraft Components and Accessories group. The manufacturer of record is Mission Systems Orchard Park Inc. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.

Catalog Facts

Item Name	Seat,check Valve
FSC / FSG	1680 — Miscellaneous Aircraft Accessories and Components (FSG 16)
Manufacturers	Mission Systems Orchard Park Inc (CAGE 04577)

Technical Specifications

Parameter	Value
NSN	1680-01-538-9442
Primary Part Number	4112-002-01
Item Name	Seat,check Valve
FSC / FSG	1680 / 16 — Miscellaneous Aircraft Accessories and Components
Manufacturer	Mission Systems Orchard Park 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	F

⇄ Related Items 1

Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.

2840-01-622-79874112002-01 POSSIBLE MATCH

SHIELD,HEAT,AIRCRAFT GAS TURBINE

Possible match (shared part number)Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney

Cross-Reference Index

Part Number	Manufacturer
4112-002-01 PRIMARY	Mission Systems Orchard Park Inc (USA)

Related Parts

2840-01-622-7987POSSIBLE MATCH

SHIELD,HEAT,AIRCRAFT GAS TURBINE

4112002-01

Frequently Asked Questions

What is NSN 1680-01-538-9442?

NSN 1680-01-538-9442 is a Seat,check Valve, manufactured by Mission Systems Orchard Park Inc, classified under FSC 1680, Miscellaneous Aircraft Accessories and Components. Status: active.

What part numbers are listed for NSN 1680-01-538-9442?

NSN 1680-01-538-9442 has 1 manufacturer part number on file: 4112-002-01 (Mission Systems Orchard Park Inc).

What NSN replaces 1680-01-538-9442?

1 possible match (shared part number, not a government interchangeability claim): 2840-01-622-7987. Verify interchangeability with system specifications before substitution.

Is NSN 1680-01-538-9442 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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