PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

1121-21Impeller,special

Rotron Incorporated · NSN 4320-01-321-4769 · FSC 4320 · No Item Name Available
Verified by PartsTable
NSN 4320-01-321-4769 — this item is cataloged by the U.S. Government under National Stock Number 4320-01-321-4769. Primary manufacturer part number: 1121-21.
Features
  • Impeller,special — FSC 4320
  • 2 verified cross-references
  • Primary manufacturer: Rotron Incorporated
Applications
  • Hydraulic and pneumatic systems
  • Industrial process pumping
  • Military vehicle hydraulics
General Description

The Impeller,special, cataloged under National Stock Number 4320-01-321-4769, is classified within Federal Supply Class 4320 (No Item Name Available) of the Pumps and Compressors group. The primary manufacturer of record is Rotron Incorporated. This item has 2 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4320-01-321-4769
Primary Part Number1121-21
Item NameImpeller,special
FSC / FSG4320 / 43 — No Item Name Available
ManufacturerRotron Incorporated
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 6
2915-00-333-8091112-121 INTERCHANGEABLE
Baffle Assy
Ontic Engineering & Manufacturing, Inc Dba Ontic Us
3120-00-799-187611454698 INTERCHANGEABLE
Bushing,sleeve
Marotta Controls Inc
4810-01-135-167311214-1 INTERCHANGEABLE
Valve,butterfly
Hamilton Sundstrand Corporation Dba Collins Aerospace
3020-01-241-4287112121-1 INTERCHANGEABLE
Gear Cluster
Eaton Aerospace Llc Dba Eaton Inoac Div Fuel & Motion Control Systems Division
2040-01-564-7895112141 INTERCHANGEABLE
Cover,boat
Shield Technologies Corp Div Shield Technologies Corporation
2040-01-567-0633112121 INTERCHANGEABLE
Cover,boat
Shield Technologies Corp Div Shield Technologies Corporation
Cross-Reference Index
Part NumberManufacturer
1121-21 PRIMARY Rotron Incorporated (USA)
1121-41 PRIMARY Rotron Incorporated (USA)
Related Parts
2915-00-333-8091INTERCHANGEABLE
BAFFLE ASSY
112-121
3120-00-799-1876INTERCHANGEABLE
BUSHING,SLEEVE
11454698
4810-01-135-1673INTERCHANGEABLE
VALVE,BUTTERFLY
11214-1
3020-01-241-4287INTERCHANGEABLE
GEAR CLUSTER
112121-1
2040-01-564-7895INTERCHANGEABLE
COVER,BOAT
112141
2040-01-567-0633INTERCHANGEABLE
COVER,BOAT
112121

Frequently Asked Questions

What is NSN 4320-01-321-4769?

NSN 4320-01-321-4769 is a Impeller,special, manufactured by Rotron Incorporated, classified under FSC 4320 (No Item Name Available). Status: active.

What are the part numbers for NSN 4320-01-321-4769?

NSN 4320-01-321-4769 has 2 cross-referenced part numbers: 1121-21 (Rotron Incorporated), 1121-41 (Rotron Incorporated).

What NSN replaces 4320-01-321-4769?

There are 6 known substitutes for 4320-01-321-4769: 2915-00-333-8091, 3120-00-799-1876, 4810-01-135-1673 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 1121-21?

Key specifications for 1121-21: End Item Identification: USED ON ASDE3 EQUIPMENT. 1 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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