PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

12L2FFBearing,sleeve

Thomson Industries Inc · NSN 3120-00-580-3252 · FSC 3120 · No Item Name Available
Verified by PartsTable
NSN 3120-00-580-3252 — this item is cataloged by the U.S. Government under National Stock Number 3120-00-580-3252. Primary manufacturer part number: 12L2FF.
Features
  • Bearing,sleeve — FSC 3120
  • Body Inside Diameter: 0.7510 INCHES MINIMUM AND 0.7540 INCHES MAXIMUM IN
  • Left Flange Width: 0.0312 INCHES NOMINAL IN
  • Corner Shape: SQUARE ALL CORNERS
  • Material: PLASTIC OVERALL
  • Style Designator: SOLID, EXTERNAL FLANGES BOTH ENDS
  • Right Flange Width: 0.0312 INCHES NOMINAL IN
  • Body Outside Diameter: 0.8115 INCHES MINIMUM AND 0.8125 INCHES MAXIMUM IN
Applications
  • Rotating machinery support and alignment
  • Shaft load distribution
  • Precision spindle assemblies
  • Applications requiring Plastic Overall construction
General Description

The Bearing,sleeve, cataloged under National Stock Number 3120-00-580-3252, is classified within Federal Supply Class 3120 (No Item Name Available) of the Bearings group. The primary manufacturer of record is Thomson Industries Inc. Government technical data includes 10 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 9 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN3120-00-580-3252
Primary Part Number12L2FF
Item NameBearing,sleeve
FSC / FSG3120 / 31 — No Item Name Available
ManufacturerThomson Industries Inc
StatusACTIVE
Body Inside Diameter0.7510 INCHES MINIMUM AND 0.7540 INCHES MAXIMUM IN
Left Flange Width0.0312 INCHES NOMINAL IN
Corner ShapeSQUARE ALL CORNERS
MaterialPLASTIC OVERALL
Style DesignatorSOLID, EXTERNAL FLANGES BOTH ENDS
Right Flange Width0.0312 INCHES NOMINAL IN
Body Outside Diameter0.8115 INCHES MINIMUM AND 0.8125 INCHES MAXIMUM IN
Material Document and ClassificationCOMP FM 1001,E I DUPONT DENEMOURS AND CO INC MFR REF SINGLE MATERIAL RESPONSE OVERALL
Right Flange Outside Diameter0.8750 INCHES MINIMUM AND 0.8906 INCHES MAXIMUM IN
Left Flange Outside Diameter0.9844 INCHES MINIMUM AND 1.0156 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 9
3110-00-245-8814L1312U INTERCHANGEABLE
Bearing,roller,cylindrical
Regal Beloit America, Inc. Dba Rollway Bearing
3455-00-268-950759-10090 INTERCHANGEABLE
Cutter,milling,screw Slotting
Union Butterfield Corp P O Box 9000 Crystal Lake Il 60039
2990-00-322-72247418454 INTERCHANGEABLE
Governor,gasoline Engine
U S Army Tank Automotive Command Amsta-Im-Mm
4720-00-999-8994 INTERCHANGEABLE
Hose,nonmetallic
5330-01-127-224115138 INTERCHANGEABLE
Seal,pinion Oil
Skf Usa Inc. Dba Skf Aerospace Sealing Solutions
6520-01-180-3574 INTERCHANGEABLE
File,pulp Canal,dental
5930-01-188-236915138 INTERCHANGEABLE
Switch,rotary
Star Mfg Intl Inc Dbaholman Cooking Equipment Inc
7430-01-267-1972 INTERCHANGEABLE
Bail Head,loading
5305-01-678-519315138 INTERCHANGEABLE
Screw,cap,hexagon Head
Barrett Firearms Manufacturing, Inc. Dba Barrett Firearms Manufacturing Inc
Cross-Reference Index
Part NumberManufacturer
15138 Middleby Marshall Inc Conveyor Ovens and Mixers Div (USA)
12L2FF PRIMARY Thomson Industries Inc (USA)
Related Parts
3110-00-245-8814INTERCHANGEABLE
BEARING,ROLLER,CYLINDRICAL
L1312U
3455-00-268-9507INTERCHANGEABLE
CUTTER,MILLING,SCREW SLOTTING
59-10090
2990-00-322-7224INTERCHANGEABLE
GOVERNOR,GASOLINE ENGINE
7418454
4720-00-999-8994INTERCHANGEABLE
HOSE,NONMETALLIC
5330-01-127-2241INTERCHANGEABLE
SEAL,PINION OIL
15138
6520-01-180-3574INTERCHANGEABLE
FILE,PULP CANAL,DENTAL
5930-01-188-2369INTERCHANGEABLE
SWITCH,ROTARY
15138
7430-01-267-1972INTERCHANGEABLE
BAIL HEAD,LOADING
5305-01-678-5193INTERCHANGEABLE
SCREW,CAP,HEXAGON HEAD
15138

Frequently Asked Questions

What is NSN 3120-00-580-3252?

NSN 3120-00-580-3252 is a Bearing,sleeve, manufactured by Thomson Industries Inc, classified under FSC 3120 (No Item Name Available). Status: active.

What are the part numbers for NSN 3120-00-580-3252?

NSN 3120-00-580-3252 has 2 cross-referenced part numbers: 15138 (Middleby Marshall Inc Conveyor Ovens and Mixers Div), 12L2FF (Thomson Industries Inc).

What NSN replaces 3120-00-580-3252?

There are 9 known substitutes for 3120-00-580-3252: 3110-00-245-8814, 3455-00-268-9507, 2990-00-322-7224 and 6 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 12L2FF?

Key specifications for 12L2FF: Body Inside Diameter: 0.7510 INCHES MINIMUM AND 0.7540 INCHES MAXIMUM IN; Left Flange Width: 0.0312 INCHES NOMINAL IN; Corner Shape: SQUARE ALL CORNERS; Material: PLASTIC 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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