The O-Ring, cataloged under National Stock Number 5331-01-621-2973, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. Government technical data includes 1 specification, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-01-621-2973 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Status | ACTIVE |
| Supplementary Features | 2.987 I.D. |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| TMM-OR | 3/2 Design control — primary reference U.S. Government activity |
NSN 5331-01-621-2973 is a O-Ring, classified under FSC 5331, O-ring. Status: active.
Key specifications for 5331-01-621-2973: Supplementary Features: 2.987 I.D.; Special Features: CMS DATA ID 8796 PCCN SE0299 PLISN A359C; NEXT HIGHER ASSEMBLY 2910-01-615-0691 ENGINE, DIESEL, QSM11-DM; Part Name Assigned by Controlling Agency: O-RING; End Item Identification: SENTINEL CLASS FAST RESPONSE CUTTER B (FRC-B). 1 specification is 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.