The O-Ring, cataloged under National Stock Number 5331-01-555-7809, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Demag Cranes & Components Corp. Government technical data includes 3 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-01-555-7809 |
| Primary Part Number | 73917544 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Demag Cranes & Components Corp |
| Status | ACTIVE |
| Cross-Sectional Height | 2.4 MILLIMETERS NOMINAL MM |
| Center Hole Diameter | 7.3 MILLIMETERS NOMINAL MM |
| Material | RUBBER SYNTHETIC |
| 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 |
|---|---|
| 73917544 | Demag Cranes & Components Corp (USA) |
| Reference | Meaning |
|---|---|
| FIGURE 7-11 ITEM 3 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5331-01-555-7809 is a O-Ring, manufactured by Demag Cranes & Components Corp, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-555-7809 has 1 manufacturer part number on file: 73917544 (Demag Cranes & Components Corp).
Key specifications for 73917544: Cross-Sectional Height: 2.4 MILLIMETERS NOMINAL MM; Special Features: AVIATION MISSION BRIDGE CRANE,MODEL 20858 TABLE 7-11 PAGE 7-23; Center Hole Diameter: 7.3 MILLIMETERS NOMINAL MM; End Item Identification: CHAIN HOIST NSN 3950-01-554-8660. 3 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.