The Bearing,ball,annular, cataloged under National Stock Number 3110-00-198-1978, is classified within Federal Supply Class 3110 (Bearings, Antifriction, Unmounted) of the Bearings group. The manufacturer of record is Army Weapons Command Attn Amswe-Ree-S. Government technical data includes 9 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government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 | 3110-00-198-1978 |
| Primary Part Number | 710121 |
| Item Name | Bearing,ball,annular |
| FSC / FSG | 3110 / 31 — Bearings, Antifriction, Unmounted |
| Manufacturer | Army Weapons Command Attn Amswe-Ree-S |
| Status | ACTIVE |
| Internal Fit-Up Designation | STANDARD |
| Surface Finish | GROUND |
| Shield Quantity | 2 |
| Style Designator | LOADING GROOVE, NON-SEPARABLE |
| Overall Outside Diameter | 5.6242 INCHES MINIMUM AND 5.6250 INCHES MAXIMUM IN |
| Bore Shape | STRAIGHT |
| Load Direction | RADIAL |
| Bore Diameter | 4.6244 INCHES MINIMUM AND 4.6250 INCHES MAXIMUM 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 |
|---|---|
| 710121 | Army Weapons Command Attn Amswe-Ree-S (USA) |
| Reference | Meaning |
|---|---|
| B136384 | 5/1 Secondary reference Federal-Mogul Corp Government Sales Dept |
NSN 3110-00-198-1978 is a Bearing,ball,annular, manufactured by Army Weapons Command Attn Amswe-Ree-S, classified under FSC 3110, Bearings, Antifriction, Unmounted. Status: active.
NSN 3110-00-198-1978 has 1 manufacturer part number on file: 710121 (Army Weapons Command Attn Amswe-Ree-S).
3 possible matches (shared part number, not a government interchangeability claim): 6210-00-299-5148, 6920-01-011-0859, 4720-01-528-9285. Verify interchangeability with system specifications before substitution.
Key specifications for 710121: Internal Fit-Up Designation: STANDARD; Surface Finish: GROUND; Shield Quantity: 2; Style Designator: LOADING GROOVE, NON-SEPARABLE. 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.