The Bearing,washer,thrust, cataloged under National Stock Number 3120-01-490-5409, is classified within Federal Supply Class 3120 (Bearings, Plain, Unmounted) of the Bearings group. The manufacturer of record is Crosby Group Inc the Mckissick Plant Div. Government technical data includes 6 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. 2 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 | 3120-01-490-5409 |
| Primary Part Number | 55594 |
| Item Name | Bearing,washer,thrust |
| FSC / FSG | 3120 / 31 — Bearings, Plain, Unmounted |
| Manufacturer | Crosby Group Inc the Mckissick Plant Div |
| Status | ACTIVE |
| Overall Thickness | 0.1900 INCHES NOMINAL IN |
| Style Designator | ROUND |
| Diameter | 3.0300 INCHES NOMINAL IN |
| Cross-Sectional Shape Style | RECTANGULAR |
| Outside Diameter | 4.8800 INCHES NOMINAL IN |
| Center Hole Shape Style | ROUND |
| 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 |
|---|---|
| 55594 PRIMARY | Crosby Group Inc the Mckissick Plant Div (USA) |
NSN 3120-01-490-5409 is a Bearing,washer,thrust, manufactured by Crosby Group Inc the Mckissick Plant Div, classified under FSC 3120, Bearings, Plain, Unmounted. Status: active.
NSN 3120-01-490-5409 has 1 manufacturer part number on file: 55594 (Crosby Group Inc the Mckissick Plant Div).
2 possible matches (shared part number, not a government interchangeability claim): 1080-01-541-3084, 7920-01-574-9447. Verify interchangeability with system specifications before substitution.
Key specifications for 55594: Overall Thickness: 0.1900 INCHES NOMINAL IN; Style Designator: ROUND; Diameter: 3.0300 INCHES NOMINAL IN; Cross-Sectional Shape Style: RECTANGULAR. 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.