The Bearing,washer,thrust, cataloged under National Stock Number 3120-01-239-7181, is classified within Federal Supply Class 3120 (Bearings, Plain, Unmounted) of the Bearings group. The manufacturer of record is Ingersoll-Rand Co Material Handling Div. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Item Name | Bearing,washer,thrust |
| FSC / FSG | 3120 — Bearings, Plain, Unmounted (FSG 31) |
| Manufacturers | Ingersoll-Rand Co Material Handling Div (CAGE 06550) |
| Parameter | Value |
|---|---|
| NSN | 3120-01-239-7181 |
| Primary Part Number | 51921 |
| Item Name | Bearing,washer,thrust |
| FSC / FSG | 3120 / 31 — Bearings, Plain, Unmounted |
| Manufacturer | Ingersoll-Rand Co Material Handling Div |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Part Number | Manufacturer |
|---|---|
| 51921 PRIMARY | Ingersoll-Rand Co Material Handling Div (USA) |
| Reference | Meaning |
|---|---|
| S6K4432 PIECE 12 | 5/9 Secondary reference American Aviation Mfg Corp |
| FF3200306 | 5/9 Secondary reference Ingersoll-Rand Co Material Handling Div |
NSN 3120-01-239-7181 is a Bearing,washer,thrust, manufactured by Ingersoll-Rand Co Material Handling Div, classified under FSC 3120, Bearings, Plain, Unmounted. Status: active.
NSN 3120-01-239-7181 has 1 manufacturer part number on file: 51921 (Ingersoll-Rand Co Material Handling Div).
2 possible matches (shared part number, not a government interchangeability claim): 9540-01-300-2881, 4730-01-335-5998. 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.