The Bearing,ball,airframe, cataloged under National Stock Number 3110-00-232-8316, is classified within Federal Supply Class 3110 (Bearings, Antifriction, Unmounted) of the Bearings group. The manufacturer of record is Mpb Corporation Dba Mpb Corp. Government technical data includes 9 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3110-00-232-8316 |
| Primary Part Number | 3TWA45-56-12 |
| Item Name | Bearing,ball,airframe |
| FSC / FSG | 3110 / 31 — Bearings, Antifriction, Unmounted |
| Manufacturer | Mpb Corporation Dba Mpb Corp |
| Status | ACTIVE |
| Outer Ring Width | 0.3100 INCHES MINIMUM AND 0.3120 INCHES MAXIMUM IN |
| Shield Quantity | 2 |
| Style Designator | SINGLE ROW INNER RING EXTENDED BOTH SIDES |
| Overall Outside Diameter | 3.4994 INCHES MINIMUM AND 3.5000 INCHES MAXIMUM IN |
| Load Direction | RADIAL |
| Bore Diameter | 2.8122 INCHES MINIMUM AND 2.8125 INCHES MAXIMUM IN |
| Material | STEEL COMP 440C OVERALL |
| Lubrication Material Document and Classification | MIL-L-17353 MIL SPEC SINGLE MATERIAL RESPONSE |
| Inner Ring Width | 0.3730 INCHES MINIMUM AND 0.3750 INCHES MAXIMUM IN |
| 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 |
|---|---|
| 3TWA45-56-12 PRIMARY | Mpb Corporation Dba Mpb Corp (USA) |
| Reference | Meaning |
|---|---|
| 161049-003 | 3/2 Design control — primary reference U.S. Government activity |
NSN 3110-00-232-8316 is a Bearing,ball,airframe, manufactured by Mpb Corporation Dba Mpb Corp, classified under FSC 3110, Bearings, Antifriction, Unmounted. Status: active.
NSN 3110-00-232-8316 has 1 manufacturer part number on file: 3TWA45-56-12 (Mpb Corporation Dba Mpb Corp).
Key specifications for 3TWA45-56-12: Outer Ring Width: 0.3100 INCHES MINIMUM AND 0.3120 INCHES MAXIMUM IN; Shield Quantity: 2; Style Designator: SINGLE ROW INNER RING EXTENDED BOTH SIDES; Overall Outside Diameter: 3.4994 INCHES MINIMUM AND 3.5000 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.