The Bearing,roller,needle, cataloged under National Stock Number 3110-00-902-4308, is classified within Federal Supply Class 3110 (Bearings, Antifriction, Unmounted) of the Bearings group. The manufacturer of record is Timken Aerospace, Inc Dba Torrington Product. Government technical data includes 10 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 3110-00-902-4308 |
| Primary Part Number | M-551-ASOH |
| Item Name | Bearing,roller,needle |
| FSC / FSG | 3110 / 31 — Bearings, Antifriction, Unmounted |
| Manufacturer | Timken Aerospace, Inc Dba Torrington Product |
| Status | ACTIVE |
| Retainer Fabrication Method | PRESSED |
| Surface Finish | GROUND |
| Style Designator | NON-SEPARABLE, CLOSED END, DRAWN SHELL |
| Overall Outside Diameter | 0.5000 INCHES NOMINAL IN |
| Alignment Type | RIGID |
| Surface Treatment | OXIDE OUTER RING |
| Standard Tolerance Designation | AFBMA STD TOLERANCE FOR INDUSTRIAL NEEDLE BEARINGS |
| Bore Diameter | 0.3125 INCHES NOMINAL IN |
| Material | STEEL OUTER RING |
| Material | STEEL CORROSION RESISTING ROLLER |
| 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 |
|---|---|
| M-551-ASOH PRIMARY | Timken Aerospace, Inc Dba Torrington Product (USA) |
| Reference | Meaning |
|---|---|
| M551XAS0H | 5/9 Secondary reference Timken Aerospace, Inc Dba Torrington Product |
NSN 3110-00-902-4308 is a Bearing,roller,needle, manufactured by Timken Aerospace, Inc Dba Torrington Product, classified under FSC 3110, Bearings, Antifriction, Unmounted. Status: active.
NSN 3110-00-902-4308 has 1 manufacturer part number on file: M-551-ASOH (Timken Aerospace, Inc Dba Torrington Product).
Key specifications for M-551-ASOH: Retainer Fabrication Method: PRESSED; Surface Finish: GROUND; Style Designator: NON-SEPARABLE, CLOSED END, DRAWN SHELL; Overall Width: 0.3125 INCHES NOMINAL IN. 10 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.