PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

M1085ABearing,ball,annular

Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic · NSN 3110-00-157-6029 · FSC 3110 · No Item Name Available
Verified by PartsTable
NSN 3110-00-157-6029 — this item is cataloged by the U.S. Government under National Stock Number 3110-00-157-6029. Primary manufacturer part number: M1085A.
Features
  • Bearing,ball,annular — FSC 3110
  • Retainer Fabrication Method: PRESSED
  • Inner Ring Width: 1.0630 INCHES NOMINAL IN
  • Load Direction: RADIAL
  • Style Designator: NON-LOADING GROOVE, NON-SEPARABLE
  • Material: STEEL INNER RING
  • Material: STEEL INNER RING
  • Material: RUBBER SYNTHETIC SEAL
Applications
  • Rotating machinery support and alignment
  • Shaft load distribution
  • Precision spindle assemblies
  • Applications requiring Steel Inner Ring construction
General Description

The Bearing,ball,annular, cataloged under National Stock Number 3110-00-157-6029, 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. Government technical data includes 26 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN3110-00-157-6029
Primary Part NumberM1085A
Item NameBearing,ball,annular
FSC / FSG3110 / 31 — No Item Name Available
ManufacturerTwin Disc, Incorporated Dba Twin Disc Mid-Atlantic
StatusACTIVE
Retainer Fabrication MethodPRESSED
Inner Ring Width1.0630 INCHES NOMINAL IN
Load DirectionRADIAL
Style DesignatorNON-LOADING GROOVE, NON-SEPARABLE
MaterialSTEEL INNER RING
MaterialSTEEL INNER RING
MaterialRUBBER SYNTHETIC SEAL
Style DesignatorNON-LOADING GROOVE, NON-SEPARABLE
MaterialSTEEL RETAINER
MaterialSTEEL BALL
Outer Ring Width0.9060 INCHES NOMINAL IN
MaterialSTEEL OUTER RING
Bearing Seal TypeCONTACT
Seal Quantity1
Bore ShapeSTRAIGHT
Internal Fit-Up DesignationSTANDARD
Standard Tolerance DesignationABEC NO.1
Surface FinishGROUND
Overall Outside Diameter100.00 MILLIMETERS NOMINAL MM
Seal Quantity1
Internal Fit-Up DesignationSTANDARD
Bearing Seal TypeCONTACT
Bore ShapeSTRAIGHT
Bore Diameter55.00 MILLIMETERS NOMINAL MM
Standard Tolerance DesignationABEC NO.1
Load DirectionRADIAL
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5815-00-125-81948511 INTERCHANGEABLE
Lever
Telemechanics Inc
5995-00-136-31608511 INTERCHANGEABLE
Cable Assembly,radio Frequency
Times Microwave Systems, Inc Dba Times Microwave Systems Inc Div Times Microwave Systems
5945-00-247-5529 INTERCHANGEABLE
Relay,electromagnetic
9340-00-292-375017Y1716PC14 INTERCHANGEABLE
Window,observation
Naval Ship Systems Command
5330-00-576-4401 INTERCHANGEABLE
Seal,plain Encased
4920-00-870-52168-5-1-1 INTERCHANGEABLE
Adapter Kit,test
Celtech Corporation Div Use CAGE 65552 for All Orders
1680-00-942-8299851-1 INTERCHANGEABLE
Tilting Pan,seat
Ami Industries, Inc Div Utc Aerospace Systems
5365-01-156-3823A3190407 INTERCHANGEABLE
Spacer,sleeve
Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir
4240-01-247-23488511 INTERCHANGEABLE
Mask,air Filtering
3m Company
9340-01-280-2364 INTERCHANGEABLE
Window,observation
Cross-Reference Index
Part NumberManufacturer
M1085A PRIMARY Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic (USA)
8511 General Motors Corp Delco Moraine Ndh Div (USA)
8511XR1E General Motors Corp (USA)
8511 General Motors Corp (USA)
8511XR1E General Motors Corp Delco Moraine Ndh Div (USA)
Related Parts
5815-00-125-8194INTERCHANGEABLE
LEVER
8511
5995-00-136-3160INTERCHANGEABLE
CABLE ASSEMBLY,RADIO FREQUENCY
8511
5945-00-247-5529INTERCHANGEABLE
RELAY,ELECTROMAGNETIC
9340-00-292-3750INTERCHANGEABLE
WINDOW,OBSERVATION
17Y1716PC14
5330-00-576-4401INTERCHANGEABLE
SEAL,PLAIN ENCASED
4920-00-870-5216INTERCHANGEABLE
ADAPTER KIT,TEST
8-5-1-1
1680-00-942-8299INTERCHANGEABLE
TILTING PAN,SEAT
851-1
5365-01-156-3823INTERCHANGEABLE
SPACER,SLEEVE
A3190407
4240-01-247-2348INTERCHANGEABLE
MASK,AIR FILTERING
8511
9340-01-280-2364INTERCHANGEABLE
WINDOW,OBSERVATION
9340-01-386-5125INTERCHANGEABLE
WINDOW,OBSERVATION
851-00001-000
5310-01-419-4448INTERCHANGEABLE
WASHER,SHOULDERED
841100

Frequently Asked Questions

What is NSN 3110-00-157-6029?

NSN 3110-00-157-6029 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 3110-00-157-6029?

NSN 3110-00-157-6029 has 5 cross-referenced part numbers: M1085A (Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic), 8511 (General Motors Corp Delco Moraine Ndh Div), 8511XR1E (General Motors Corp), 8511 (General Motors Corp), 8511XR1E (General Motors Corp Delco Moraine Ndh Div).

What NSN replaces 3110-00-157-6029?

There are 12 known substitutes for 3110-00-157-6029: 5815-00-125-8194, 5995-00-136-3160, 5945-00-247-5529 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of M1085A?

Key specifications for M1085A: Retainer Fabrication Method: PRESSED; Inner Ring Width: 1.0630 INCHES NOMINAL IN; Load Direction: RADIAL; Style Designator: NON-LOADING GROOVE, NON-SEPARABLE. 26 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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