The Bearing,plain,track Roller, cataloged under National Stock Number 3120-01-640-8917, is classified within Federal Supply Class 3120 (Bearings, Plain, Unmounted) of the Bearings group. The manufacturer of record is New Hampshire Ball Bearings Inc Div Astro Division. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Item Name | Bearing,plain,track Roller |
| FSC / FSG | 3120 — Bearings, Plain, Unmounted (FSG 31) |
| Manufacturers | New Hampshire Ball Bearings Inc Div Astro Division (CAGE 15860); Rbc Aircraft Products, Inc. (CAGE 3NPS1) |
| Parameter | Value |
|---|---|
| NSN | 3120-01-640-8917 |
| Primary Part Number | JSFE44A1 |
| Item Name | Bearing,plain,track Roller |
| FSC / FSG | 3120 / 31 — Bearings, Plain, Unmounted |
| Manufacturer | New Hampshire Ball Bearings Inc Div Astro Division |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
NSN 3120-01-640-8917 is a Bearing,plain,track Roller, manufactured by New Hampshire Ball Bearings Inc Div Astro Division, classified under FSC 3120, Bearings, Plain, Unmounted. Status: active.
NSN 3120-01-640-8917 has 2 manufacturer part numbers on file: JSFE44A1 (New Hampshire Ball Bearings Inc Div Astro Division), JSFE44A1 (Rbc Aircraft Products, Inc.).
1 possible match (shared part number, not a government interchangeability claim): 3120-01-640-8921. Verify interchangeability with system specifications before substitution.
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.