PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

SU1Bearing,sleeve

Circor Naval Solutions Llc Dba Warren Pumps · NSN 3120-00-288-4371 · FSC 3120 · No Item Name Available
Verified by PartsTable
NSN 3120-00-288-4371 — this item is cataloged by the U.S. Government under National Stock Number 3120-00-288-4371. Primary manufacturer part number: SU1.
Features
  • Bearing,sleeve — FSC 3120
  • Hole Diameter: 0.1875 INCHES NOMINAL FIRST IN
  • Surface Groove Location and Quantity: 1 INTERNAL
  • Lubricant Accommodation Style: GROOVED CLOSED BOTH ENDS
  • Material: COPPER ALLOY 910 OVERALL
  • Corner Shape: SQUARE ALL CORNERS
  • Body Inside Diameter: 1.2500 INCHES MINIMUM AND 1.2510 INCHES MAXIMUM IN
  • Material Document and Classification: MIL-B-16261 GRADE 3 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
Applications
  • Rotating machinery support and alignment
  • Shaft load distribution
  • Precision spindle assemblies
  • Applications requiring Copper Alloy 910 Overall construction
General Description

The Bearing,sleeve, cataloged under National Stock Number 3120-00-288-4371, 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. Government technical data includes 10 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN3120-00-288-4371
Primary Part NumberSU1
Item NameBearing,sleeve
FSC / FSG3120 / 31 — No Item Name Available
ManufacturerCircor Naval Solutions Llc Dba Warren Pumps
StatusACTIVE
Hole Diameter0.1875 INCHES NOMINAL FIRST IN
Surface Groove Location and Quantity1 INTERNAL
Lubricant Accommodation StyleGROOVED CLOSED BOTH ENDS
MaterialCOPPER ALLOY 910 OVERALL
Corner ShapeSQUARE ALL CORNERS
Body Inside Diameter1.2500 INCHES MINIMUM AND 1.2510 INCHES MAXIMUM IN
Material Document and ClassificationMIL-B-16261 GRADE 3 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
Style DesignatorSOLID, PLAIN, NO OUTSIDE FLANGES
Body Outside Diameter1.4990 INCHES MINIMUM AND 1.5000 INCHES MAXIMUM IN
Antirotation/lubrication Type and Quantity1 HOLE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
3130-00-116-90341735AS431-1 INTERCHANGEABLE
Bearing Unit,ball
Morse Industrial Corp Sealmaster Bearing Div Sub of Emerson Electric Co
6230-01-110-3829ELSQ INTERCHANGEABLE
Floodlight,electric
Lithonia Lighting National Services Industries Inc Div
5310-01-315-3804 INTERCHANGEABLE
Washer,spring Tension
Cross-Reference Index
Part NumberManufacturer
SU1 PRIMARY Circor Naval Solutions Llc Dba Warren Pumps (USA)
Related Parts
3130-00-116-9034INTERCHANGEABLE
BEARING UNIT,BALL
1735AS431-1
6230-01-110-3829INTERCHANGEABLE
FLOODLIGHT,ELECTRIC
ELSQ
5310-01-315-3804INTERCHANGEABLE
WASHER,SPRING TENSION

Frequently Asked Questions

What is NSN 3120-00-288-4371?

NSN 3120-00-288-4371 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 3120-00-288-4371?

NSN 3120-00-288-4371 has 1 cross-referenced part number: SU1 (Circor Naval Solutions Llc Dba Warren Pumps).

What NSN replaces 3120-00-288-4371?

There are 3 known substitutes for 3120-00-288-4371: 3130-00-116-9034, 6230-01-110-3829, 5310-01-315-3804. Verify interchangeability with system specifications before substitution.

What are the specifications of SU1?

Key specifications for SU1: Hole Diameter: 0.1875 INCHES NOMINAL FIRST IN; Surface Groove Location and Quantity: 1 INTERNAL; Lubricant Accommodation Style: GROOVED CLOSED BOTH ENDS; Material: COPPER ALLOY 910 OVERALL. 11 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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