The Cone and Rollers,tapered Roller, cataloged under National Stock Number 3110-00-100-0270, is classified within Federal Supply Class 3110 (Bearings, Antifriction, Unmounted) of the Bearings group. The manufacturer of record is Federal-Mogul Corp Government Sales Dept. Government technical data includes 6 specifications, cited from the U.S. Government catalog. The record lists 5 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 5 items share a part number with this NSN in the catalog (possible match — not a government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 | 3110-00-100-0270 |
| Primary Part Number | BT528A |
| Item Name | Cone and Rollers,tapered Roller |
| FSC / FSG | 3110 / 31 — Bearings, Antifriction, Unmounted |
| Manufacturer | Federal-Mogul Corp Government Sales Dept |
| Status | ACTIVE |
| Style Designator | NORMAL ANGLE |
| Cone Corner Radius | 0.0625 INCHES NOMINAL IN |
| Cone Width | 1.4200 INCHES NOMINAL IN |
| Standard Tolerance Designation | AFBMA CLASS 2 |
| Bore Diameter | 1.8750 INCHES NOMINAL IN |
| 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 |
|---|---|
| BT528A PRIMARY | Federal-Mogul Corp Government Sales Dept (USA) |
| 528A PRIMARY | Rbc Bearings Incorporated Div West Trenton Division (USA) |
| 528A PRIMARY | Federal-Mogul Corp Government Sales Dept (USA) |
| 705117 | Army Weapons Command Attn Amswe-Ree-S (USA) |
| 528A PRIMARY | The Timken Corporation (USA) |
| Reference | Meaning |
|---|---|
| FF-B-187A | 4/1 Identification reference U.S. Government activity |
| 62AX304 | 5/9 Secondary reference Mack Trucks Inc |
| 528A | 5/9 Secondary reference Tyson Bearing Co Div Skf Industries Inc |
NSN 3110-00-100-0270 is a Cone and Rollers,tapered Roller, manufactured by Federal-Mogul Corp Government Sales Dept, classified under FSC 3110, Bearings, Antifriction, Unmounted. Status: active.
NSN 3110-00-100-0270 has 5 manufacturer part numbers on file: BT528A (Federal-Mogul Corp Government Sales Dept), 528A (Rbc Bearings Incorporated Div West Trenton Division), 528A (Federal-Mogul Corp Government Sales Dept), 705117 (Army Weapons Command Attn Amswe-Ree-S), 528A (The Timken Corporation).
5 possible matches (shared part number, not a government interchangeability claim): 5120-00-357-6106, 6760-00-608-9352, 5305-01-136-8734. Verify interchangeability with system specifications before substitution.
Key specifications for BT528A: Style Designator: NORMAL ANGLE; Cone Corner Radius: 0.0625 INCHES NOMINAL IN; Cone Width: 1.4200 INCHES NOMINAL IN; Standard Tolerance Designation: AFBMA CLASS 2. 6 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.