The Bearing,ball,annular, cataloged under National Stock Number 3110-01-183-4087, is classified within Federal Supply Class 3110 (Bearings, Antifriction, Unmounted) of the Bearings group. The manufacturer of record is Rtx Corporation Div Pratt & Whitney. Government technical data includes 9 specifications, cited from the U.S. Government catalog. The record lists 6 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 7 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3110-01-183-4087 |
| Primary Part Number | 4061112 |
| Item Name | Bearing,ball,annular |
| FSC / FSG | 3110 / 31 — Bearings, Antifriction, Unmounted |
| Manufacturer | Rtx Corporation Div Pratt & Whitney |
| Status | ACTIVE |
| Surface Finish | GROUND |
| Criticality Code Justification | FEAT |
| Style Designator | NON-LOADING GROOVE, NON-SEPARABLE |
| Overall Outside Diameter | 2.9575 INCHES MINIMUM AND 2.9578 INCHES MAXIMUM IN |
| Bore Shape | STRAIGHT |
| Contact Angle | 21.0 DEGREES NOMINAL |
| Load Direction | RADIAL |
| Bore Diameter | 1.7321 INCHES MINIMUM AND 1.7323 INCHES MAXIMUM IN |
| 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 | F |
| Part Number | Manufacturer |
|---|---|
| 4061112 PRIMARY | Rtx Corporation Div Pratt & Whitney (USA) |
| 4061159 | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA) |
| 4061112 PRIMARY | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA) |
| 4061157 | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA) |
| 4061157 PRIMARY | Skf Usa Inc. (USA) |
| 4061139 | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA) |
| Reference | Meaning |
|---|---|
| 4061159 | 5/9 Secondary reference Kaydon Corporation Dba Kaydon Corp |
| 4062707 | 7/2 Vendor item drawing reference Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney |
| 4061139 | 5/9 Secondary reference Mpb Corporation Dba Mpb Corp |
| MR109T11C2K1522A5B | 5/9 Secondary reference U.S. Government activity |
| 4061112 | 5/9 Secondary reference U.S. Government activity |
| 4062707 | 5/9 Secondary reference U.S. Government activity |
| 4062707 | 5/9 Secondary reference Mpb Corporation Dba Mpb Corp |
NSN 3110-01-183-4087 is a Bearing,ball,annular, manufactured by Rtx Corporation Div Pratt & Whitney, classified under FSC 3110, Bearings, Antifriction, Unmounted. Status: active.
NSN 3110-01-183-4087 has 6 manufacturer part numbers on file: 4061112 (Rtx Corporation Div Pratt & Whitney), 4061159 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney), 4061112 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney), 4061157 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney), 4061157 (Skf Usa Inc.) and 1 more.
1 possible match (shared part number, not a government interchangeability claim): 3030-01-389-0435. Verify interchangeability with system specifications before substitution.
Key specifications for 4061112: Surface Finish: GROUND; Criticality Code Justification: FEAT; Style Designator: NON-LOADING GROOVE, NON-SEPARABLE; Overall Width: 0.6249 INCHES MINIMUM AND 0.6299 INCHES MAXIMUM IN. 9 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.