PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

18M26105Bearing Half,sleeve

Textron Lycoming Inc Williamsport Plant · NSN 3120-00-388-4194 · FSC 3120 · No Item Name Available
Verified by PartsTable
NSN 3120-00-388-4194 — this item is cataloged by the U.S. Government under National Stock Number 3120-00-388-4194. Primary manufacturer part number: 18M26105.
Features
  • Bearing Half,sleeve — FSC 3120
  • Surface Treatment: LEAD OUTSIDE DIAMETER SURFACE OF BODY
  • Body Inside Diameter: 2.1258 INCHES MINIMUM AND 2.1273 INCHES MAXIMUM IN
  • Material: COPPER ALLOY INTERMEDIATE LAYER
  • Locking Lug Length: 0.1500 INCHES MINIMUM AND 0.1550 INCHES MAXIMUM IN
  • Material: LEAD ALLOY INNER LAYER
  • Locking Lug Height: 0.1900 INCHES MINIMUM AND 0.2200 INCHES MAXIMUM IN
  • Distance From Lug End to End of Bearing: 0.1850 INCHES MINIMUM AND 0.1925 INCHES MAXIMUM IN
Applications
  • Rotating machinery support and alignment
  • Shaft load distribution
  • Precision spindle assemblies
  • Applications requiring Copper Alloy Intermediate Layer construction
General Description

The Bearing Half,sleeve, cataloged under National Stock Number 3120-00-388-4194, is classified within Federal Supply Class 3120 (No Item Name Available) of the Bearings group. The primary manufacturer of record is Textron Lycoming Inc Williamsport Plant. Government technical data includes 13 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 11 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN3120-00-388-4194
Primary Part Number18M26105
Item NameBearing Half,sleeve
FSC / FSG3120 / 31 — No Item Name Available
ManufacturerTextron Lycoming Inc Williamsport Plant
StatusACTIVE
Surface TreatmentLEAD OUTSIDE DIAMETER SURFACE OF BODY
Body Inside Diameter2.1258 INCHES MINIMUM AND 2.1273 INCHES MAXIMUM IN
MaterialCOPPER ALLOY INTERMEDIATE LAYER
Locking Lug Length0.1500 INCHES MINIMUM AND 0.1550 INCHES MAXIMUM IN
MaterialLEAD ALLOY INNER LAYER
Locking Lug Height0.1900 INCHES MINIMUM AND 0.2200 INCHES MAXIMUM IN
Distance From Lug End to End of Bearing0.1850 INCHES MINIMUM AND 0.1925 INCHES MAXIMUM IN
Corner ShapeSQUARE ALL CORNERS
MaterialOIL LUBRICATING LUBRICATION
Body Outside Diameter2.2775 INCHES MINIMUM AND 2.2975 INCHES MAXIMUM IN
MaterialSTEEL COMP 1008 OR STEEL COMP 1010 OUTER LAYER
Locking Lug Width0.0310 INCHES MINIMUM AND 0.0410 INCHES MAXIMUM IN
Style DesignatorHALF SLEEVE, PLAIN, NO OUTSIDE FLANGES
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 11
3110-00-275-00012X6653A INTERCHANGEABLE
Cone and Rollers,tapered Roller
Napco International Llc Dba Napco International Inc
4820-00-359-4537414X45 INTERCHANGEABLE
Seat,valve
David Brown Hydraulics Inc Dba Hydreco
5365-00-542-4121L7SB29-1 INTERCHANGEABLE
Bushing,machine Thread
Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir
5310-00-547-352872218 INTERCHANGEABLE
Washer,flat
Eaton Aerospace Llc Dba Sterer Engineering Div Valve & Actuator
6145-00-548-1243UL62SO6BCK3/12EPCPE INTERCHANGEABLE
Cable,power,electrical
Underwriters Laboratories Inc
5975-00-944-635372218 INTERCHANGEABLE
Elbow,electrical Conduit
Unison Industries Llc
5930-01-190-738867276 INTERCHANGEABLE
Switch Assembly
Viavi Solutionsllc
4420-01-329-524967276 INTERCHANGEABLE
Cap,water Filler
Cummins Inc.
5305-01-400-2832777-2218 INTERCHANGEABLE
Setscrew
Deutz Corporation
5985-01-602-8759074218-000-000 INTERCHANGEABLE
Coupler,directional
Northrop Grumman Systems Corporation
Cross-Reference Index
Part NumberManufacturer
67276 Textron Lycoming Inc Williamsport Plant (USA)
LW13521 Textron Lycoming Inc Williamsport Plant (USA)
18M26105 PRIMARY Textron Lycoming Inc Williamsport Plant (USA)
72218 Textron Lycoming Inc Williamsport Plant (USA)
Related Parts
3110-00-275-0001INTERCHANGEABLE
CONE AND ROLLERS,TAPERED ROLLER
2X6653A
4820-00-359-4537INTERCHANGEABLE
SEAT,VALVE
414X45
5365-00-542-4121INTERCHANGEABLE
BUSHING,MACHINE THREAD
L7SB29-1
5310-00-547-3528INTERCHANGEABLE
WASHER,FLAT
72218
6145-00-548-1243INTERCHANGEABLE
CABLE,POWER,ELECTRICAL
UL62SO6BCK3/12EPCPE
5975-00-944-6353INTERCHANGEABLE
ELBOW,ELECTRICAL CONDUIT
72218
5930-01-190-7388INTERCHANGEABLE
SWITCH ASSEMBLY
67276
4420-01-329-5249INTERCHANGEABLE
CAP,WATER FILLER
67276
5305-01-400-2832INTERCHANGEABLE
SETSCREW
777-2218
5985-01-602-8759INTERCHANGEABLE
COUPLER,DIRECTIONAL
074218-000-000
5360-01-653-8923INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
72218

Frequently Asked Questions

What is NSN 3120-00-388-4194?

NSN 3120-00-388-4194 is a Bearing Half,sleeve, manufactured by Textron Lycoming Inc Williamsport Plant, classified under FSC 3120 (No Item Name Available). Status: active.

What are the part numbers for NSN 3120-00-388-4194?

NSN 3120-00-388-4194 has 4 cross-referenced part numbers: 67276 (Textron Lycoming Inc Williamsport Plant), LW13521 (Textron Lycoming Inc Williamsport Plant), 18M26105 (Textron Lycoming Inc Williamsport Plant), 72218 (Textron Lycoming Inc Williamsport Plant).

What NSN replaces 3120-00-388-4194?

There are 11 known substitutes for 3120-00-388-4194: 3110-00-275-0001, 4820-00-359-4537, 5365-00-542-4121 and 8 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 18M26105?

Key specifications for 18M26105: Surface Treatment: LEAD OUTSIDE DIAMETER SURFACE OF BODY; Body Inside Diameter: 2.1258 INCHES MINIMUM AND 2.1273 INCHES MAXIMUM IN; Material: COPPER ALLOY INTERMEDIATE LAYER; Locking Lug Length: 0.1500 INCHES MINIMUM AND 0.1550 INCHES MAXIMUM IN. 14 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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