The O-Ring, cataloged under National Stock Number 5331-01-474-2028, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Caterpillar Inc Div Caterpillar Defense. 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-01-474-2028 |
| Primary Part Number | 149-4291 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Caterpillar Inc Div Caterpillar Defense |
| 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 |
| Part Number | Manufacturer |
|---|---|
| 149-4291 PRIMARY | Caterpillar Inc Div Caterpillar Defense (USA) |
| Reference | Meaning |
|---|---|
| 239-8484 | 3/9 Design control — primary reference Caterpillar Inc Div Caterpillar Defense |
| 149-4291 | 5/9 Secondary reference Caterpillar of Australia Pty Ltd |
NSN 5331-01-474-2028 is a O-Ring, manufactured by Caterpillar Inc Div Caterpillar Defense, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-474-2028 has 1 manufacturer part number on file: 149-4291 (Caterpillar Inc Div Caterpillar Defense).
Key specifications for 149-4291: End Item Identification: CONTRACTOR LOGISTICS LIFETIME SUPPORT (CRLS) ROLLER, VIBRATORY, SELF-PROPELLED, TYPE II CATERPILLAR MODEL CS-563D CONTRACT NO. DAAE07-98-C-S007 NSN 3895-01-456-2735 TM-5-3895-383. 0 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.