Step Assembly, Vehicular2590-01-660-9231

NSN 2590-01-660-9231 · NIIN 016609231 · Part number 4344300

Oshkosh Defense Llc · FSC 2590 — Miscellaneous Vehicular Components · FSG 25 — Vehicular Equipment Components · CAGE 75Q65

Government record, cited

NSN 2590-01-660-9231 — this item is cataloged by the U.S. Government under National Stock Number 2590-01-660-9231. Manufacturer of record part number: 4344300.

Also searched as 2590-01-660-9231 · 2590016609231 · NIIN 016609231 · 01-660-9231 · FSC 2590 Miscellaneous Vehicular Components · CAGE 75Q65 · 4344300

Nearby stock numbers ← 2590-01-660-9095 Wiring Harness, Branched · 2590-01-660-9250 Tank, Oil, Hydraulic System →

Features

Step Assembly,vehicular — FSC 2590
Component Quantity: 30
Document Type: PARTS LIST
Mounting Position: CAB
Component Document Origin: INDUSTRIAL
Vehicle Identification Designator: M977A4
Document Source: 75Q65
Vehicle Design Control Activity: 19207

Identification

NSN: 2590-01-660-9231
NIIN: 016609231
FSC: 2590 — Miscellaneous Vehicular Components
FSG: 25 — Vehicular Equipment Components
Primary part number: 4344300
Manufacturer: Oshkosh Defense Llc

General Description

The Step Assembly,vehicular, cataloged under National Stock Number 2590-01-660-9231, is classified within Federal Supply Class 2590 (Miscellaneous Vehicular Components) of the Vehicular Equipment Components group. The manufacturer of record is Oshkosh Defense Llc. Government technical data includes 7 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.

Technical Specifications

Parameter	Value
NSN	2590-01-660-9231
Primary Part Number	4344300
Item Name	Step Assembly,vehicular
FSC / FSG	2590 / 25 — Miscellaneous Vehicular Components
Manufacturer	Oshkosh Defense Llc
Status	ACTIVE
Component Quantity	30
Document Type	PARTS LIST
Mounting Position	CAB
Component Document Origin	INDUSTRIAL
Vehicle Identification Designator	M977A4
Document Source	75Q65
Vehicle Design Control Activity	19207

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
4344300 PRIMARY	Oshkosh Defense Llc (USA)

No interchangeability data on file.

Other items in FSC 2590 — Miscellaneous Vehicular Components

Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.

2590-00-001-1252

2590-00-001-1252 · Item name not on file

2590-00-001-1253

2590-00-001-1253 · Item name not on file

2590-00-001-1254

BRACKET,HORN MOUNTING

2590-00-001-3423

2590-00-001-3423 · Item name not on file

2590-00-001-3438

2590-00-001-3438 · Item name not on file

2590-00-001-3439

2590-00-001-3439 · Item name not on file

2590-00-001-3461

2590-00-001-3461 · Item name not on file

2590-00-001-3463

2590-00-001-3463 · Item name not on file

Frequently Asked Questions

What is NSN 2590-01-660-9231?

NSN 2590-01-660-9231 is a Step Assembly,vehicular, manufactured by Oshkosh Defense Llc, classified under FSC 2590, Miscellaneous Vehicular Components. Status: active.

What part numbers are listed for NSN 2590-01-660-9231?

NSN 2590-01-660-9231 has 1 manufacturer part number on file: 4344300 (Oshkosh Defense Llc).

What are the specifications of 4344300?

Key specifications for 4344300: Component Quantity: 30; Document Type: PARTS LIST; Mounting Position: CAB; Component Document Origin: INDUSTRIAL. 7 specifications are documented in the U.S. Government catalog.

Is NSN 2590-01-660-9231 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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