The Cup,tapered Roller Bearing, cataloged under National Stock Number 3110-00-277-0654, is classified within Federal Supply Class 3110 (Bearings, Antifriction, Unmounted) of the Bearings group. The manufacturer of record is Dressta North America Ltd. Government technical data includes 5 specifications, cited from the U.S. Government catalog. The record lists 4 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3110-00-277-0654 |
| Primary Part Number | 971522R1 |
| Item Name | Cup,tapered Roller Bearing |
| FSC / FSG | 3110 / 31 — Bearings, Antifriction, Unmounted |
| Manufacturer | Dressta North America Ltd |
| Status | ACTIVE |
| Style Designator | NORMAL ANGLE |
| Outside Diameter | 5.5960 INCHES NOMINAL IN |
| Backface Corner Radius | 0.1250 INCHES NOMINAL IN |
| Standard Tolerance Designation | AFBMA CLASS 2 |
| 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 | X |
| Part Number | Manufacturer |
|---|---|
| 971522R1 PRIMARY | Dressta North America Ltd (USA) |
| HM617010 PRIMARY | Bay City Shovels, Inc (USA) |
| JD9112 | Deere & Co (USA) |
| HM617010 PRIMARY | The Timken Corporation (USA) |
| Reference | Meaning |
|---|---|
| FF-B-187 | 4/1 Identification reference U.S. Government activity |
| 3110002770654 | 5/9 Secondary reference E.c.a Etablissement Centrald'approvisionnement Des Forces Armee |
| D49210 | 5/9 Secondary reference Komatsu America Corporation |
| 3110002770654 | 6/9 Informative reference only E.c.a Etablissement Central Des Approvisionnements Des Forces Armees Royales |
| 49210 | 5/9 Secondary reference Komatsu America Corporation |
NSN 3110-00-277-0654 is a Cup,tapered Roller Bearing, manufactured by Dressta North America Ltd, classified under FSC 3110, Bearings, Antifriction, Unmounted. Status: active.
NSN 3110-00-277-0654 has 4 manufacturer part numbers on file: 971522R1 (Dressta North America Ltd), HM617010 (Bay City Shovels, Inc), JD9112 (Deere & Co), HM617010 (The Timken Corporation).
3 possible matches (shared part number, not a government interchangeability claim): 5975-00-489-4793, 5330-01-264-9149, 5935-01-347-2062. Verify interchangeability with system specifications before substitution.
Key specifications for 971522R1: Style Designator: NORMAL ANGLE; Overall Width: 1.3438 INCHES NOMINAL IN; Outside Diameter: 5.5960 INCHES NOMINAL IN; Backface Corner Radius: 0.1250 INCHES NOMINAL IN. 5 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.