PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

M1493Bearing,ball,annular

Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic · NSN 3110-01-346-6638 · FSC 3110 · No Item Name Available
Verified by PartsTable
NSN 3110-01-346-6638 — this item is cataloged by the U.S. Government under National Stock Number 3110-01-346-6638. Primary manufacturer part number: M1493.
Features
  • Bearing,ball,annular — FSC 3110
  • 3 verified cross-references
  • Primary manufacturer: Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic
Applications
  • Rotating machinery support and alignment
  • Shaft load distribution
  • Precision spindle assemblies
General Description

The Bearing,ball,annular, cataloged under National Stock Number 3110-01-346-6638, is classified within Federal Supply Class 3110 (No Item Name Available) of the Bearings group. The primary manufacturer of record is Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic. This item has 3 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NameBearing,ball,annular
FSC / FSG3110 — No Item Name Available (FSG 31)
ManufacturersTwin Disc International S a (CAGE K2171); Marine & Industrial Transmissions Ltd (CAGE U2621); Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic (CAGE 61208)
Technical Specifications
ParameterValue
NSN3110-01-346-6638
Primary Part NumberM1493
Item NameBearing,ball,annular
FSC / FSG3110 / 31 — No Item Name Available
ManufacturerTwin Disc, Incorporated Dba Twin Disc Mid-Atlantic
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
5950-01-107-0635 INTERCHANGEABLE
Transformer,audio Frequency
2990-01-164-192922129 INTERCHANGEABLE
Muffler,exhaust
Walker Mfg Co
Cross-Reference Index
Part NumberManufacturer
M1493 Twin Disc International S a (GBR)
M1493 Marine & Industrial Transmissions Ltd (GBR)
M1493 PRIMARY Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic (USA)
Related Parts
5950-01-107-0635INTERCHANGEABLE
TRANSFORMER,AUDIO FREQUENCY
2990-01-164-1929INTERCHANGEABLE
MUFFLER,EXHAUST
22129

Frequently Asked Questions

What is NSN 3110-01-346-6638?

NSN 3110-01-346-6638 is a Bearing,ball,annular, manufactured by Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic, classified under FSC 3110 (No Item Name Available). Status: active.

What are the part numbers for NSN 3110-01-346-6638?

NSN 3110-01-346-6638 has 3 cross-referenced part numbers: M1493 (Twin Disc International S a), M1493 (Marine & Industrial Transmissions Ltd), M1493 (Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic).

What NSN replaces 3110-01-346-6638?

There are 2 known substitutes for 3110-01-346-6638: 5950-01-107-0635, 2990-01-164-1929. Verify interchangeability with system specifications before substitution.

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