PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

1A21-443Bearing,sleeve

Fwd Seagrave Holdings Lp · NSN 3120-00-354-6406 · FSC 3120 · No Item Name Available
Verified by PartsTable
NSN 3120-00-354-6406 — this item is cataloged by the U.S. Government under National Stock Number 3120-00-354-6406. Primary manufacturer part number: 1A21-443.
Features
  • Bearing,sleeve — FSC 3120
  • 3 verified cross-references
  • Primary manufacturer: Fwd Seagrave Holdings Lp
Applications
  • Rotating machinery support and alignment
  • Shaft load distribution
  • Precision spindle assemblies
General Description

The Bearing,sleeve, cataloged under National Stock Number 3120-00-354-6406, is classified within Federal Supply Class 3120 (No Item Name Available) of the Bearings group. The primary manufacturer of record is Fwd Seagrave Holdings Lp. This item has 3 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 11 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NameBearing,sleeve
FSC / FSG3120 — No Item Name Available (FSG 31)
ManufacturersFwd Seagrave Holdings Lp (CAGE 23382); Dresser, Llc (CAGE 64104)
Technical Specifications
ParameterValue
NSN3120-00-354-6406
Primary Part Number1A21-443
Item NameBearing,sleeve
FSC / FSG3120 / 31 — No Item Name Available
ManufacturerFwd Seagrave Holdings Lp
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 11
4730-00-115-3864 INTERCHANGEABLE
Reducer,tube
5310-00-208-2855 INTERCHANGEABLE
Nut,plain,hexagon
6625-00-525-048821443 INTERCHANGEABLE
Case,test Set
L3harris Technologies, Inc. Div Space and Airborne Systems
5970-00-708-87142-144-3 INTERCHANGEABLE
Insulator,plate
Precision Aerospace Corporation Dba Precision Engine Control
6665-00-761-295221443 INTERCHANGEABLE
Cord,probe,retractible
Mirion Technologies (canberra), Inc.
5905-00-833-2424805027 INTERCHANGEABLE
Resistor Assembly
Superior Electric Holding Group Llc Div Specialty Product Technologies
5998-00-848-897821443-1 INTERCHANGEABLE
Circuit Card Assembly
Rex Systems Incorporated Dba Rex Systems Inc
5945-00-945-5441 INTERCHANGEABLE
Relay,electromagnetic
6685-01-511-232921443 INTERCHANGEABLE
Probe,humidity-Temperature
Rdf Corporation
8030-01-512-487821443 INTERCHANGEABLE
Sealing Compound
Loctite Corp
Cross-Reference Index
Part NumberManufacturer
1A21-443 PRIMARY Fwd Seagrave Holdings Lp (USA)
805027 Dresser, Llc (USA)
21-443 Dresser, Llc (USA)
Related Parts
4730-00-115-3864INTERCHANGEABLE
REDUCER,TUBE
5310-00-208-2855INTERCHANGEABLE
NUT,PLAIN,HEXAGON
6625-00-525-0488INTERCHANGEABLE
CASE,TEST SET
21443
5970-00-708-8714INTERCHANGEABLE
INSULATOR,PLATE
2-144-3
6665-00-761-2952INTERCHANGEABLE
CORD,PROBE,RETRACTIBLE
21443
5905-00-833-2424INTERCHANGEABLE
RESISTOR ASSEMBLY
805027
5998-00-848-8978INTERCHANGEABLE
CIRCUIT CARD ASSEMBLY
21443-1
5945-00-945-5441INTERCHANGEABLE
RELAY,ELECTROMAGNETIC
6685-01-511-2329INTERCHANGEABLE
PROBE,HUMIDITY-TEMPERATURE
21443
8030-01-512-4878INTERCHANGEABLE
SEALING COMPOUND
21443
5365-01-601-4664INTERCHANGEABLE
SHIM

Frequently Asked Questions

What is NSN 3120-00-354-6406?

NSN 3120-00-354-6406 is a Bearing,sleeve, manufactured by Fwd Seagrave Holdings Lp, classified under FSC 3120 (No Item Name Available). Status: active.

What are the part numbers for NSN 3120-00-354-6406?

NSN 3120-00-354-6406 has 3 cross-referenced part numbers: 1A21-443 (Fwd Seagrave Holdings Lp), 805027 (Dresser, Llc), 21-443 (Dresser, Llc).

What NSN replaces 3120-00-354-6406?

There are 11 known substitutes for 3120-00-354-6406: 4730-00-115-3864, 5310-00-208-2855, 6625-00-525-0488 and 8 more. Verify interchangeability with system specifications before substitution.

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