The Cup,tapered Roller Bearing, cataloged under National Stock Number 3110-00-100-0510, is classified within Federal Supply Class 3110 (Bearings, Antifriction, Unmounted) of the Bearings group. The manufacturer of record is Federal-Mogul Corp Government Sales Dept. Government technical data includes 5 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 8 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 10 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3110-00-100-0510 |
| Primary Part Number | 12303 |
| Item Name | Cup,tapered Roller Bearing |
| FSC / FSG | 3110 / 31 — Bearings, Antifriction, Unmounted |
| Manufacturer | Federal-Mogul Corp Government Sales Dept |
| Status | ACTIVE |
| Style Designator | NORMAL ANGLE |
| Outside Diameter | 3.0312 INCHES NOMINAL IN |
| Backface Corner Radius | 0.0600 INCHES NOMINAL IN |
| Standard Tolerance Designation | AFBMA CLASS 2 |
| Material | STEEL OVERALL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 12303 PRIMARY | Federal-Mogul Corp Government Sales Dept (USA) |
| 827475 PRIMARY | Garwood/feller Inc Garwood Winch Div (USA) |
| 12303 PRIMARY | The Timken Corporation (USA) |
| Reference | Meaning |
|---|---|
| FF-B-187/1 | 4/1 Identification reference U.S. Government activity |
| 103S32 | 5/9 Secondary reference Bendix Corp the |
| 12303-20629 | 5/1 Secondary reference The Timken Corporation |
| 12303 | 5/9 Secondary reference Bomag Usa Sub of United Dominion Industries Ltd |
| FFB187/01-263 | 5/9 Secondary reference U.S. Government activity |
| 845111104 | 5/9 Secondary reference Bomag Usa Sub of United Dominion Industries Ltd |
| 3110001000510 | 6/9 Informative reference only E.c.a Etablissement Central Des Approvisionnements Des Forces Armees Royales |
| 103S32 | 5/9 Secondary reference Ipi Medical Products |
NSN 3110-00-100-0510 is a Cup,tapered Roller Bearing, manufactured by Federal-Mogul Corp Government Sales Dept, classified under FSC 3110, Bearings, Antifriction, Unmounted. Status: active.
NSN 3110-00-100-0510 has 3 manufacturer part numbers on file: 12303 (Federal-Mogul Corp Government Sales Dept), 827475 (Garwood/feller Inc Garwood Winch Div), 12303 (The Timken Corporation).
10 possible matches (shared part number, not a government interchangeability claim): 5330-00-129-6162, 5325-00-276-4910, 2910-00-740-6094. Verify interchangeability with system specifications before substitution.
Key specifications for 12303: Style Designator: NORMAL ANGLE; Overall Width: 0.4688 INCHES NOMINAL IN; Outside Diameter: 3.0312 INCHES NOMINAL IN; Backface Corner Radius: 0.0600 INCHES NOMINAL IN. 5 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.