NSN 1680-01-531-2591 · NIIN 015312591 · Part number W909-56/48DE
Transdigm Inc Div Adelwiggins Group · FSC 1680 — Miscellaneous Aircraft Accessories and Components · FSG 16 — Aircraft Components and Accessories · CAGE 79326
Government record, cited
NSN 1680-01-531-2591 — this item is cataloged by the U.S. Government under National Stock Number 1680-01-531-2591. Manufacturer of record part number: W909-56/48DE.
Also searched as1680-01-531-2591 ·
1680015312591 ·
NIIN 015312591 ·
01-531-2591 ·
FSC 1680 Miscellaneous Aircraft Accessories and Components · CAGE 79326 · W909-56/48DE · 402977-1
Manufacturer of record: Transdigm Inc Div Adelwiggins Group
Identification
NSN: 1680-01-531-2591
NIIN: 015312591
FSC: 1680 — Miscellaneous Aircraft Accessories and Components
FSG: 16 — Aircraft Components and Accessories
Primary part number: W909-56/48DE
Manufacturer: Transdigm Inc Div Adelwiggins Group
General Description
The Check Valve,fuel,a, cataloged under National Stock Number 1680-01-531-2591, is classified within Federal Supply Class 1680 (Miscellaneous Aircraft Accessories and Components) of the Aircraft Components and Accessories group. The manufacturer of record is Transdigm Inc Div Adelwiggins Group. 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
Check Valve,fuel,a
FSC / FSG
1680 — Miscellaneous Aircraft Accessories and Components (FSG 16)
Manufacturers
Mission Systems Davenport Inc. (CAGE 72429); Transdigm Inc Div Adelwiggins Group (CAGE 79326)
Technical Specifications
Parameter
Value
NSN
1680-01-531-2591
Primary Part Number
W909-56/48DE
Item Name
Check Valve,fuel,a
FSC / FSG
1680 / 16 — Miscellaneous Aircraft Accessories and Components
Other items in FSC 1680 — Miscellaneous Aircraft Accessories and Components
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
1680-00-001-1736
DUCT ASSEMBLY,BRANCHED
1680-00-003-3721
1680-00-003-3721 · Item name not on file
1680-00-009-3782
PISTON,EJECTOR,INNER
1680-00-009-6180
1680-00-009-6180 · Item name not on file
1680-00-475-0002
TIP,RUBBER CONTROL
1680-00-696-6170
ADAPTER,SCREW END A
1680-00-867-7158
COVER,GEARCASE
1680-00-885-0923
KNOB ASSY,LANDING G
Frequently Asked Questions
What is NSN 1680-01-531-2591?
NSN 1680-01-531-2591 is a Check Valve,fuel,a, manufactured by Transdigm Inc Div Adelwiggins Group, classified under FSC 1680, Miscellaneous Aircraft Accessories and Components. Status: active.
What part numbers are listed for NSN 1680-01-531-2591?
NSN 1680-01-531-2591 has 2 manufacturer part numbers on file: 402977-1 (Mission Systems Davenport Inc.), W909-56/48DE (Transdigm Inc Div Adelwiggins Group).
Is NSN 1680-01-531-2591 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.