The O-Ring, cataloged under National Stock Number 5331-00-890-9992, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Komatsu America Corp.. Government technical data includes 2 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-00-890-9992 |
| Primary Part Number | 257642R1 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Komatsu America Corp. |
| Status | ACTIVE |
| Cross-Sectional Height | 0.038 INCHES NOMINAL IN |
| Material | RUBBER CHLOROPRENE CLASS CR |
| 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 |
|---|---|
| 257642R1 | Komatsu America Corp. (USA) |
| Reference | Meaning |
|---|---|
| 257642R1 | 5/9 Secondary reference U.S. Government activity |
| 257642R1 | 3/9 Design control — primary reference Komatsu American Intl Co |
| 257642R1 | 5/9 Secondary reference Navistar International Corporation Dba Navistar |
NSN 5331-00-890-9992 is a O-Ring, manufactured by Komatsu America Corp., classified under FSC 5331, O-ring. Status: active.
NSN 5331-00-890-9992 has 1 manufacturer part number on file: 257642R1 (Komatsu America Corp.).
Key specifications for 257642R1: Cross-Sectional Height: 0.038 INCHES NOMINAL IN; Material: RUBBER CHLOROPRENE CLASS CR. 2 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.