PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

E21Bearing,sleeve

Circor Naval Solutions Llc Dba Warren Pumps · NSN 3120-01-150-9725 · FSC 3120 · No Item Name Available
Verified by PartsTable
NSN 3120-01-150-9725 — this item is cataloged by the U.S. Government under National Stock Number 3120-01-150-9725. Primary manufacturer part number: E21.
Features
  • Bearing,sleeve — FSC 3120
  • 2 verified cross-references
  • Primary manufacturer: Circor Naval Solutions Llc Dba Warren Pumps
Applications
  • Rotating machinery support and alignment
  • Shaft load distribution
  • Precision spindle assemblies
General Description

The Bearing,sleeve, cataloged under National Stock Number 3120-01-150-9725, is classified within Federal Supply Class 3120 (No Item Name Available) of the Bearings group. The primary manufacturer of record is Circor Naval Solutions Llc Dba Warren Pumps. This item has 2 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 5 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)
ManufacturersCircor Naval Solutions Llc Dba Warren Pumps (CAGE 63857)
Technical Specifications
ParameterValue
NSN3120-01-150-9725
Primary Part NumberE21
Item NameBearing,sleeve
FSC / FSG3120 / 31 — No Item Name Available
ManufacturerCircor Naval Solutions Llc Dba Warren Pumps
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 5
3110-00-055-1043 INTERCHANGEABLE
Bearing,ball,annular
3110-00-100-8536D21 INTERCHANGEABLE
Bearing,ball,thrust
Schaeffler Group Usa Inc
5330-01-196-6544 INTERCHANGEABLE
Seal,plain
5930-01-439-1141 INTERCHANGEABLE
Switch,sensitive
4820-01-601-2919E21 INTERCHANGEABLE
Body,valve
Sun Hydraulics Corporation
Cross-Reference Index
Part NumberManufacturer
E21 PRIMARY Circor Naval Solutions Llc Dba Warren Pumps (USA)
BS5-1639 PIECE 12 Circor Naval Solutions Llc Dba Warren Pumps (USA)
Related Parts
3110-00-055-1043INTERCHANGEABLE
BEARING,BALL,ANNULAR
3110-00-100-8536INTERCHANGEABLE
BEARING,BALL,THRUST
D21
5330-01-196-6544INTERCHANGEABLE
SEAL,PLAIN
5930-01-439-1141INTERCHANGEABLE
SWITCH,SENSITIVE
4820-01-601-2919INTERCHANGEABLE
BODY,VALVE
E21

Frequently Asked Questions

What is NSN 3120-01-150-9725?

NSN 3120-01-150-9725 is a Bearing,sleeve, manufactured by Circor Naval Solutions Llc Dba Warren Pumps, classified under FSC 3120 (No Item Name Available). Status: active.

What are the part numbers for NSN 3120-01-150-9725?

NSN 3120-01-150-9725 has 2 cross-referenced part numbers: E21 (Circor Naval Solutions Llc Dba Warren Pumps), BS5-1639 PIECE 12 (Circor Naval Solutions Llc Dba Warren Pumps).

What NSN replaces 3120-01-150-9725?

There are 5 known substitutes for 3120-01-150-9725: 3110-00-055-1043, 3110-00-100-8536, 5330-01-196-6544 and 2 more. Verify interchangeability with system specifications before substitution.

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