The Bearing,ball,airframe, cataloged under National Stock Number 3110-00-152-2937, is classified within Federal Supply Class 3110 (Bearings, Antifriction, Unmounted) of the Bearings group. The manufacturer of record is Mpb Corp Div Timken Super Precision. Government technical data includes 9 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3110-00-152-2937 |
| Primary Part Number | S2128EISTE3P515LY231 |
| Item Name | Bearing,ball,airframe |
| FSC / FSG | 3110 / 31 — Bearings, Antifriction, Unmounted |
| Manufacturer | Mpb Corp Div Timken Super Precision |
| Status | ACTIVE |
| Lubrication Material | GREASE |
| Outer Ring Width | 0.2450 INCHES MINIMUM AND 0.2500 INCHES MAXIMUM IN |
| Style Designator | SINGLE ROW, TORQUE TUBE TYPE, W/OR W/O CLOSURE |
| Overall Outside Diameter | 1.7495 INCHES MINIMUM AND 1.7500 INCHES MAXIMUM IN |
| Load Direction | RADIAL |
| Bore Diameter | 1.3122 INCHES MINIMUM AND 1.3128 INCHES MAXIMUM IN |
| Material | STEEL CORROSION RESISTING OVERALL |
| Lubrication Material Document and Classification | MIL-G-81322 MIL SPEC SINGLE MATERIAL RESPONSE |
| Inner Ring Width | 0.2760 INCHES MINIMUM AND 0.2810 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 |
|---|---|
| 3TWL21-28PLY76 | Mpb Corporation Dba Mpb Corp (USA) |
| S2128EISTE3P515LY231 PRIMARY | Mpb Corp Div Timken Super Precision (USA) |
| 3TWL21-28P | Mpb Corporation Dba Mpb Corp (USA) |
| Reference | Meaning |
|---|---|
| 42206D5 | 7/2 Vendor item drawing reference U.S. Government activity |
NSN 3110-00-152-2937 is a Bearing,ball,airframe, manufactured by Mpb Corp Div Timken Super Precision, classified under FSC 3110, Bearings, Antifriction, Unmounted. Status: active.
NSN 3110-00-152-2937 has 3 manufacturer part numbers on file: 3TWL21-28PLY76 (Mpb Corporation Dba Mpb Corp), S2128EISTE3P515LY231 (Mpb Corp Div Timken Super Precision), 3TWL21-28P (Mpb Corporation Dba Mpb Corp).
Key specifications for S2128EISTE3P515LY231: Lubrication Material: GREASE; Outer Ring Width: 0.2450 INCHES MINIMUM AND 0.2500 INCHES MAXIMUM IN; Style Designator: SINGLE ROW, TORQUE TUBE TYPE, W/OR W/O CLOSURE; Overall Outside Diameter: 1.7495 INCHES MINIMUM AND 1.7500 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.