The Roller,bearing, cataloged under National Stock Number 3110-00-678-3445, 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 4 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3110-00-678-3445 |
| Primary Part Number | QB23928 |
| Item Name | Roller,bearing |
| FSC / FSG | 3110 / 31 — Bearings, Antifriction, Unmounted |
| Manufacturer | Timken Aerospace, Inc Dba Torrington Product |
| Status | ACTIVE |
| Rolling Element Diameter | 0.4997 INCHES MINIMUM AND 0.5000 INCHES MAXIMUM IN |
| Style Designator | CYLINDRICAL ROLLER, FLAT ENDS |
| Material Document and Classification | 66,AISI/SAE E4340H FED STD 1ST MATERIAL RESPONSE OR 66,AISI/SAE E52100 FED STD 2ND MATERIAL RESPONSE OVERALL |
| Material | STEEL OR STEEL COMP E4340H OR STEEL COMP E52100 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 |
|---|---|
| QB23928 PRIMARY | Timken Aerospace, Inc Dba Torrington Product (USA) |
| 6769607 PRIMARY | Rolls-Royce Solutions America Inc (USA) |
| 6769607 | General Motors Corp (USA) |
| Reference | Meaning |
|---|---|
| 6769607 | 5/1 Secondary reference Terex Equipment Ltd Div Construction Equipment |
| 6769607 | 5/9 Secondary reference U.S. Government activity |
| 6769607 | 5/9 Secondary reference Euclid Inc |
NSN 3110-00-678-3445 is a Roller,bearing, manufactured by Timken Aerospace, Inc Dba Torrington Product, classified under FSC 3110, Bearings, Antifriction, Unmounted. Status: active.
NSN 3110-00-678-3445 has 3 manufacturer part numbers on file: QB23928 (Timken Aerospace, Inc Dba Torrington Product), 6769607 (Rolls-Royce Solutions America Inc), 6769607 (General Motors Corp).
Key specifications for QB23928: Rolling Element Diameter: 0.4997 INCHES MINIMUM AND 0.5000 INCHES MAXIMUM IN; Style Designator: CYLINDRICAL ROLLER, FLAT ENDS; Material Document and Classification: 66,AISI/SAE E4340H FED STD 1ST MATERIAL RESPONSE OR 66,AISI/SAE E52100 FED STD 2ND MATERIAL RESPONSE OVERALL; Overall Length: 0.7440 INCHES MINIMUM AND 0.7460 INCHES MAXIMUM IN. 4 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.