NSN 2540-01-658-6557 — this item is cataloged by the U.S. Government under National Stock Number 2540-01-658-6557. Manufacturer of record part number: 4223121.
Also searched as2540-01-658-6557 ·
2540016586557 ·
NIIN 016586557 ·
01-658-6557 ·
FSC 2540 Vehicular Furniture and Accessories · CAGE 75Q65 · 4223121
The Bracket,vehicular Seat, cataloged under National Stock Number 2540-01-658-6557, is classified within Federal Supply Class 2540 (Vehicular Furniture and Accessories) of the Vehicular Equipment Components group. The manufacturer of record is Oshkosh Defense Llc. Government technical data includes 3 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. Current acquisition status: Active. Unit of issue: EA.
Technical Specifications
Parameter
Value
NSN
2540-01-658-6557
Primary Part Number
4223121
Item Name
Bracket,vehicular Seat
FSC / FSG
2540 / 25 — Vehicular Furniture and Accessories
Manufacturer
Oshkosh Defense Llc
Status
ACTIVE
Mounting Hole Quantity
32
Material
ALUMINUM
Mounting Hole Type
PLAIN
Lifecycle & Compliance
Acquisition Status
ACTIVE
DEMIL Code
DEMIL A — No Demilitarization Required
Hazard
Possible hazard — SDS may be required (DLA HMIC P)
Other items in FSC 2540 — Vehicular Furniture and Accessories
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
2540-00-001-2045
2540-00-001-2045 · Item name not on file
2540-00-001-3392
2540-00-001-3392 · Item name not on file
2540-00-001-3467
2540-00-001-3467 · Item name not on file
2540-00-001-3534
2540-00-001-3534 · Item name not on file
2540-00-001-3535
2540-00-001-3535 · Item name not on file
2540-00-001-3536
2540-00-001-3536 · Item name not on file
2540-00-001-3537
BRACKET,HEADLIGHT,MOUNTING
2540-00-001-3538
BRACKET,HEADLIGHT,MOUNTING
Frequently Asked Questions
What is NSN 2540-01-658-6557?
NSN 2540-01-658-6557 is a Bracket,vehicular Seat, manufactured by Oshkosh Defense Llc, classified under FSC 2540, Vehicular Furniture and Accessories. Status: active.
What part numbers are listed for NSN 2540-01-658-6557?
NSN 2540-01-658-6557 has 1 manufacturer part number on file: 4223121 (Oshkosh Defense Llc).
What are the specifications of 4223121?
Key specifications for 4223121: Mounting Hole Quantity: 32; Overall Height: 20.75 INCHES NOMINAL IN; Overall Length: 23.31 INCHES NOMINAL IN; Overall Width: 17.96 INCHES NOMINAL IN. 3 specifications are documented in the U.S. Government catalog.
Is NSN 2540-01-658-6557 hazardous material?
Possible hazard — SDS may be required (DLA HMIC P). 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.